# Patent

## Title
Stabilizer mixtures

## Abstract

A stabilizer mixture containing the components (A) and (B) wherein

    
    
        component (A) is for example
        a compound of the formula (A-1)
    
    






    
    
        wherein
        A1 is hydrogen or C1-C4alkyl,
        A2 is a direct bond or C1-C10alkylene, and
        n1 is a number from 2 to 50; and
        component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II);
    
    






    
    
        with the proviso that components (A) and (B) are different.

## Background
This application is a continuation of copending application Ser. No. 12/317,014, filed on Dec. 18, 2008 which is a continuation of Ser. No. 11/498,351, filed Aug. 3, 2006 now abandoned which is a continuation of application Ser. No. 11/052,714, filed Jan. 19, 2005, now abandoned which is a continuation of application Ser. No. 10/276,120, filed Nov. 11, 2002, now abandoned, which is the National Stage of International Application PCT/EP01/05865, filed May 22, 2001, the contents of which are herein incorporated by reference.


The present invention relates to a stabilizer mixture containing a specific sterically hindered amine ester or amide, and two different low molecular weight sterically hindered amines.
Stabilizer mixtures containing blends of sterically hindered amines are for example described in U.S. Pat. No. 4,692,468, U.S. Pat. No. 4,863,981, U.S. Pat. No. 5,719,217, U.S. Pat. No. 5,919,399, U.S. Pat. No. 5,965,643, U.S. Pat. No. 5,980,783, U.S. Pat. No. 6,015,849 and U.S. Pat. No. 6,020,406.
The present invention relates to a stabilizer mixture containing the components (A) and (B) wherein
component (A) is
a compound of the formula (A-1)




wherein

A1 is hydrogen or C1-C4alkyl,

A2 is a direct bond or C1-C10alkylene, and

n1 is a number from 2 to 50;

at least one compound of the formulae (A-2-a) and (A-2-b)





wherein

n2 and n2* are a number from 2 to 50;

a compound of the formula (A-3)





wherein

A3 and A4 independently of one another are hydrogen or C1-C8alkyl, or A3 and A4 together form a C2-C14alkylene group, and

the variables n3 independently of one another are a number from 1 to 50; or

a compound of the formula (A-4)





wherein

n4 is a number from 2 to 50,

A5 is hydrogen or C1-C4alkyl,

the radicals A6 and A7 independently of one another are C1-C4alkyl or a group of the formula (a-I)





wherein A8 is hydrogen, C1-C8alkyl, O−, —OH, —CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C8alkenyl, C7-C9-phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl,

with the proviso that at least 50% of the radicals A7 are a group of the formula (a-I), and component (B) is formed by two different low molecular weight sterically hindered amine compounds containing a group of the formula (I) or (II);





with the proviso that components (A) and (B) are different.

Preferably the compounds of component (B) have a molecular weight up to 1,000 g/mol, for example 155 to 800 g/mol or 155 to 1,000 g/mol or 300 to 800 g/mol or 300 to 1,000 g/mol.
The two different compounds of component (B) are preferably selected from the group consisting of the following classes
β-1) a compound of the formula (B-1)




in which

E1 is hydrogen, C1-C8alkyl, O−, —OH, —CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl,

m1 is 1, 2 or 4,

if m1 is 1, E2 is C1-C25alkyl,

if m1 is 2, E2 is C1-C14alkylene or a group of the formula (b-I)





wherein E3 is C1-C10alkyl or C2-C10alkenyl, E4 is C1-C10alkylene, and

E5 and E6 independently of one another are C1-C4alkyl, cyclohexyl or methylcyclohexyl, and

if m1 is 4, E2 is C4-C10alkanetetrayl;

β-2) a compound of the formula (B-2)





in which

two of the radicals E7 are —COO—(C1-C20alkyl), and

    two of the radicals E7 are a group of the formula (b-II)






with E8 having one of the meanings of E1;

β-3) a compound of the formula (B-3)





in which

E9 and E10 together form C2-C14alkylene,

E11 is hydrogen or a group —Z1—COO—Z2,

Z1 is C2-C14alkylene, and

Z2 is C1-C24alkyl, and

E12 has one of the meanings of E1;

β-4) a compound of the formula (B-4)





wherein

the radicals E13 independently of one another have one of the meanings of E1,

the radicals E14 independently of one another are hydrogen or C1-C12alkyl, and

E15 is C1-C10alkylene or C3-C10alkylidene;

β-5) a compound of the formula (B-5)





wherein

the radicals E16 independently of one another have one of the meanings of E1;

β-6) a compound of the formula (B-6)





in which

E17 is C1-C24alkyl, and

E18 has one of the meanings of E1;

(β-7) a compound of the formula (B-7)





in which

E19, E20 and E21 independently of one another are a group of the formula (b-III)





wherein E22 has one of the meanings of E1;

β-8) a compound of the formula (B-8)





wherein

the radicals E23 independently of one another have one of the meanings of E1, and E24 is hydrogen, C1-C12alkyl or C1-C12alkoxy;

β-9) a compound of the formula (B-9)





wherein

m2 is 1, 2 or 3,

E25 has one of the meanings of E1, and

when m2 is 1, E26 is a group





when m2 is 2, E26 is C2-C22alkylene, and

when m2 is 3, E26 is a group of the formula (b-IV)





wherein the radicals E27 independently of one another are C2-C12alkylene, and the radicals E28 independently of one another are C1-C12alkyl or C5-C12cycloalkyl;

β-10) a compound of the formula (B-10)





wherein

the radicals E29 independently of one another have one of the meanings of E1, and

E30 is C2-C22alkylene, C5-C7cycloalkylene, C1-C4alkylenedi(C5-C7cycloalkylene), phenylene or phenylenedi(C1-C4alkylene); or

β-11) a compound of the formula (B-11)





in which

E31 is C1-C10alkyl, C5-C12cycloalkyl, C1-C4alkyl-substituted C5-C12cycloalkyl, phenyl or C1-C10alkyl-substituted phenyl,

E32 is C3-C10alkylene,

E33 has one of the meanings of E1, and

m3 is a number from 2 to 6.

One of the preferred embodiments of this invention relates to stabilizer mixtures wherein the two compounds of component (B) are selected from different classes.
Examples of component (B) are

    
    
        A compound selected from the class β-1 and a compound selected from the class β-3, β-4, β-5, β-6, β-7, β-8, β-9, β-10 or β-11, preferably the class β-3, β-5, β-6, β-10 or β-11.
        A compound selected from the class β-3 and a compound selected from the class β-4, β-5, β-6, β-7, β-9, β-10 or β-11, preferably β-5, β-6, β-10 or β-11.
        A compound selected from the class β-5 and a compound selected from the class β-6, β-7, β-8, β-9, β-10 or β-11, preferably β-6, β-10 or β-11.
        A compound selected from the class β-6 and a compound selected from the class β-10 or β-11.
        A compound selected from the class β-7 and a compound selected from the class β-8, β-10 or β-11.
        A compound selected from the class β-9 and a compound selected from the class β-10 or β-11.
        A compound selected from the class β-10 and a compound selected from the class β-11.
    
    


Examples of alkyl having up to 25 carbon atoms are methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, isobutyl, tert-butyl, 2-ethylbutyl, n-pentyl, isopentyl, 1-methylpentyl, 1,3-dimethylbutyl, n-hexyl, 1-methylhexyl, n-heptyl, isoheptyl, 1,1,3,3-tetramethylbutyl, 1-methylheptyl, 3-methylheptyl, n-octyl, 2-ethylhexyl, 1,1,3-trimethylhexyl, 1,1,3,3-tetramethylpentyl, nonyl, decyl, undecyl, 1-methylundecyl, dodecyl, 1,1,3,3,5,5-hexamethylhexyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, eicosyl and docosyl. One of the preferred definitions of A8, E1, E8, E12, E13, E16, E18, E22, E23, E25, E29 and E33 is C1-C4alkyl, especially methyl.
Examples of alkoxy having up to 18 carbon atoms are methoxy, ethoxy, propoxy, isopropoxy, butoxy, isobutoxy, pentoxy, isopentoxy, hexoxy, heptoxy, octoxy, decyloxy, dodecyloxy, tetradecyloxy, hexadecyloxy and octadecyloxy. One of the preferred meanings of E1 is octoxy. E24 is preferably C1-C4alkoxy.
Examples of C5-C12cycloalkyl are cyclopentyl, 6-cyclohexyl, cycloheptyl, cyclooctyl and cyclododecyl. C5-C8Cycloalkyl, especially cyclohexyl, is preferred.
C1-C4Alkyl-substituted C5-C12cycloalkyl is for example methylcyclohexyl or dimethylcyclohexyl.
Examples of C5-C12cycloalkoxy are cyclopentoxy, cyclohexoxy, cycloheptoxy, cyclooctoxy, cyclodecyloxy and cyclododecyloxy. C5-C8Cycloalkoxy, in particular cyclopentoxy and cyclohexoxy, is preferred.
C1-C10Alkyl-substituted phenyl is for example methylphenyl, dimethylphenyl, trimethylphenyl or tert-butylphenyl.
Examples of C7-C9phenylalkyl are benzyl and phenylethyl.
C7-C9Phenylalkyl which is substituted on the phenyl radical by 1, 2 or 3 C1-C4alkyl is for example methylbenzyl, dimethylbenzyl, trimethylbenzyl or tert-butylbenzyl.
Examples of alkenyl having up to 10 carbon atoms are allyl, 2-methallyl, butenyl, pentenyl and hexenyl. Allyl is preferred. The carbon atom in position 1 is preferably saturated.
Examples of acyl containing not more than 8 carbon atoms are formyl, acetyl, propionyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl, acryloyl, methacryloyl and benzoyl. C1-C8Alkanoyl, C3-C8alkenyl and benzoyl are preferred. Acetyl and acryloyl are especially preferred.
Examples of alkylene having up to 22 carbon atoms are methylene, ethylene, propylene, trimethylene, tetramethylene, pentamethylene, 2,2-dimethyltrimethylene, hexamethylene, trimethylhexamethylene, octamethylene and decamethylene.
An example of C3-C10alkylidene is the group




An example of C4-C10alkanetetrayl is 1,2,3,4-butanetetrayl.
An example of C5-C7cycloalkylene is cyclohexylene.
An example of C1-C4alkylenedi(C5-C7cycloalkylene) is methylenedicyclohexylene.
An example of phenylenedi(C1-C4alkylene) is methylene-phenylene-methylene or ethylene-phenylene-ethylene.
n1, n2, n2* and n4 are preferably a number from 2 to 25, in particular 2 to 20.
n3 is preferably a number from 1 to 25, in particular 1 to 20.
m3 is preferably a number from 2 to 6 or 2 to 5, in particular 2 to 4.
The compounds described above as components (A) and (B) are essentially known and commercially available. All of them can be prepared by known processes.
The preparation of the compounds of component (A) is disclosed for example in U.S. Pat. No. 4,233,412, U.S. Pat. No. 4,340,534, WO-A-98/51,690 and EP-A-1,803.
The preparation of the compounds of component (B) is disclosed for example in U.S. Pat. No. 5,679,733, U.S. Pat. No. 3,640,928, U.S. Pat. No. 4,198,334, U.S. Pat. No. 5,204,473, U.S. Pat. No. 4,619,958, U.S. Pat. No. 4,110,306, U.S. Pat. No. 4,110,334, U.S. Pat. No. 4,689,416, U.S. Pat. No. 4,408,051, SU-A-768,175 (Derwent 88-138,751/20), U.S. Pat. No. 5,049,604, U.S. Pat. No. 4,769,457, U.S. Pat. No. 4,356,307, U.S. Pat. No. 4,619,956, U.S. Pat. No. 5,182,390, GB-A-2,269,819, U.S. Pat. No. 4,292,240, U.S. Pat. No. 5,026,849, U.S. Pat. No. 5,071,981, U.S. Pat. No. 4,547,538, U.S. Pat. No. 4,976,889 and U.S. Pat. No. 5,051,458. Component (A) is preferably TINUVIN 622®, HOSTAVIN N 30® or FERRO AM 806®.
The compounds of component (B) are preferably selected from the group consisting of DASTIB 845®, TINUVIN 770®, TINUVIN 765®, TINUVIN 144®, TINUVIN 123®, ADK STAB LA 52®, ADK STAB LA 57®, ADK STAB LA 62®, ADK STAB LA 67®, HOSTAVIN N 20®, HOSTAVIN N 24®, SANDUVOR 3050®, DIACETAM 5®, SUMISORB TM 61®, UVINUL 4049®, SANDUVOR PR 31®, GOODRITE UV 3034®, GOODRITE UV 3150®, GOODRITE UV 3159®, GOODRITE 3110 x 128®, UVINUL 4050H®, UVASIL 299 LM® and UVASIL 2000 LM®.
The meanings of the terminal groups which saturate the free valences in the compounds of the formulae (A-1), (A-2-a), (A-2-b), (A-4) and (B-11) depend on the processes used for their preparation. The terminal groups can also be modified after the preparation of the compounds.
If the compounds of the formula (A-1) are prepared, for example, by reacting a compound of the formula




in which A1 is hydrogen or methyl, with a dicarboxylic acid diester of the formula Y—OOC-A2-COO—Y, in which Y is, for example, methyl, ethyl or propyl, and A2 is as defined above, the terminal group bonded to the 2,2,6,6-tetramethyl-4-oxypiperidin-1-yl radical is hydrogen or —CO-A2-COO—Y, and the terminal group bonded to the diacyl radical is —O—Y or





In the compounds of the formula (A-2-a), the terminal group bonded to the nitrogen can be, for example, hydrogen and the terminal group bonded to the 2-hydroxypropylene radical can be, for example, a




group.

In the compounds of the formula (A-2-b), the terminal group bonded to the dimethylene radical can be, for example, —OH, and the terminal group bonded to the oxygen can be, for example, hydrogen. The terminal groups can also be polyether radicals.
In the compounds of the formula (A-4), the end group bonded to the —CH2— residue can be, for example, hydrogen and the end group bonded to the —CH(CO2A7) residue can be, for example, —CH═CH—COOA7.
In the compounds of the formula (B-11), the terminal group bonded to the silicon atom can be, for example, (E31)3Si—O—, and the terminal group bonded to the oxygen can be, for example, —Si(E31)3.
The compounds of the formula (B-11) can also be in the form of cyclic compounds If m3 is a number from 3 to 6, i.e. the free valences shown in the structural formula then form a direct bond.
A8 is preferably hydrogen, C1-C4alkyl, C1-C10alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.
E1, E8, E12, E13, E16, E18, E22, E23, E25, E29 and E33 are preferably hydrogen, C1-C4alkyl, C1-C10alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.
A8, E1, E8, E12, E13, E16, E18, E22, E23, E25, E29 and E33 are in particular hydrogen or methyl and E1 additionally is C1-C8alkoxy.
According to a preferred embodiment
A1 is hydrogen or methyl,
A2 is a direct bond or C2-C6alkylene, and
n1 is a number from 2 to 25;
n2 and n2* are a number from 2 to 25;
A3 and A4 independently of one another are hydrogen or C1-C4alkyl, or A3 and A4 together form a C9-C13alkylene group, and
the variables n3 independently of one another are a number from 1 to 25;
n4 is a number from 2 to 25,
A5 and A6 independently of one another are C1-C4alkyl, and
A7 is C1-C4alkyl or a group of the formula (a-I)
with the proviso that at least 50% of the radicals A7 are a group of the formula (a-I).
According to a further preferred embodiment
m1 is 1, 2 or 4,
if m1 is 1, E2 is C12-C20alkyl,
if m1 is 2, E2 is C2-C10alkylene or a group of the formula (b-I)
E3 is C1-C4alkyl,
E4 is C1-C6alkylene, and
E5 and E6 independently of one another are C1-C4alkyl, and
if m1 is 4, E2 is C4-C8alkanetetrayl;
two of the radicals E7 are —COO—(C10-C15alkyl), and
two of the radicals E7 are a group of the formula (b-II);
E9 and E10 together form C9-C13alkylene,
E11 is hydrogen or a group —Z1—COO—Z2,
Z1 is C2-C6alkylene, and
Z2 is C10-C16alkyl;
E14 is hydrogen, and
E16 is C2-C6alkylene or C3-C5alkylidene;
E17 is C10-C14alkyl;
E24 is C1-C4alkoxy;
m2 is 1, 2 or 3,
when m2 is 1, E26 is a group




when m2 is 2, E26 is C2-C6alkylene, and

when m2 is 3, E26 is a group of the formula (b-IV)

the radicals E27 independently of one another are C2-C6alkylene, and

the radicals E28 independently of one another are C1-C4alkyl or C6-C8cycloalkyl;

E30 is C2-C6alkylene; and

E31 is C1-C4alkyl,

E32 is C3-C6alkylene, and

m3 is a number from 2 to 6.

A particularly preferred embodiment of this invention relates to a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a), (A-2-a), (A-2-b), (A-3-a) or (A-4-a);




wherein n1 is a number from 2 to 20;





wherein n2 and n2* are a number from 2 to 20;





wherein the variables n3 independently of one another are a number from 1 to 20;





wherein n4 is a number from 2 to 20, and

at least 50% of the radicals A7 are a group of the formula (a-I)





wherein A8 is hydrogen, C1-C8alkyl, O−, —OH, —CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl,

and the remaining radicals A7 are ethyl; and

component (B) is formed by two different compounds selected from the group consisting of compounds of the formulae (B-1-a), (B-1-b), (B-1-c), (B-1-d), (B-2-a),

(B-3-a), (B-3-b), (B-4-a), (B-4-b), (B-5), (B-6-a), (B-7), (B-8-a), (B-9-a), (B-9-b), (B-9-c), (B-10-a) and (B-11-a);





wherein E1 is hydrogen, C1-C8alkyl, O−, —OH, —CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl, or C1-C8acyl;





in which two of the radicals E7 are —COO—C13H27 and

two of the radicals E7 are





and E8 has one of the meanings of E1;





wherein E12 has one of the meanings of E1;





wherein E13 has one of the meanings of E1;





wherein E16 has one of the meanings of E1;





wherein E18 has one of the meanings of E1;





in which E19, E20 and E21 independently of one another are a group of the formula (b-III)





wherein E22 has one of the meanings of E1;





wherein E23 has one of the meanings of E11





wherein E25 has one of the meanings of E1,





wherein E29 has one of the meanings of E1;





wherein m3 is a number from 2 to 6 and E33 has one of the meanings of E1.

A particularly preferred embodiment of this invention also relates to a stabilizer mixture wherein one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen.
Another preferred embodiment of this invention relates to a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n2 and n2* are a number from 2 to 20; and
one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen.
A further particularly preferred embodiment of this invention is a stabilizer mixture wherein component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n2 and n2* are a number from 2 to 20;
one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen; and
the other of the two different compounds forming component (B) is a compound of the formula (B-1-a) with E1 being hydrogen, (B-1-b) with E1 being methyl, (B-1-d) with E1 being hydrogen or methyl, (B-3-a) with E12 being hydrogen, (B-3-b) with E12 being hydrogen, (B-4-b) with E13 being hydrogen, (B-5) with E16 being hydrogen, (B-6-a) with E18 being hydrogen or methyl, (B-8-a) with E23 being methyl, (B-9-c) with E26 being hydrogen or methyl, (B-10-a) with E29 being hydrogen, or (B-11-a) with E33 being hydrogen.
Examples of stabilizer mixtures according to the present invention are the following combinations of commercial products:

    1. TINUVIN 622®+TINUVIN 770®+TINUVIN 765®
    2. TINUVIN 622®+TINUVIN 770®+TINUVIN 144®
    3. TINUVIN 622®+TINUVIN 770®+TINUVIN 123®
    4. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-3-a) wherein E12 is hydrogen
    5. TINUVIN 622®+TINUVIN 770®+HOSTAVIN N 24®
    6. TINUVIN 622®+TINUVIN 770®+DIACETAM 5®
    7. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 52®
    8. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 57®
    9. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 62®
    10. TINUVIN 622®+TINUVIN 770®+ADK STAB LA 67®
    11. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3034®
    12. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3150®
    13. TINUVIN 622®+TINUVIN 770®+GOODRITE UV 3159®
    14. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-9-a) wherein E25 is hydrogen
    15. TINUVIN 622®+TINUVIN 770®+UVINUL 4049®
    16. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-10-a) wherein E29 is hydrogen
    17. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-1-a) wherein E1 is hydrogen
    18. TINUVIN 622®+TINUVIN 770®+SUMISORB TM 61®
    19. TINUVIN 622®+TINUVIN 770®+SANDUVOR 3050®
    20. TINUVIN 622®+TINUVIN 770®+SANDUVOR PR-31®
    21. TINUVIN 622®+TINUVIN 770®+UVASIL 299 LM®
    22. TINUVIN 622®+TINUVIN 770®+UVASIL 2000 LM®
    23. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-6-a) wherein E18 is hydrogen
    24. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-6-a) wherein E18 is methyl
    25. TINUVIN 622®+TINUVIN 770®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    26. TINUVIN 622®+TINUVIN 765®+TINUVIN 144®
    27. TINUVIN 622®+TINUVIN 765®+TINUVIN 123®
    28. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-3-a) wherein E12 is hydrogen
    29. TINUVIN 622®+TINUVIN 765®+HOSTAVIN N 24®
    30. TINUVIN 622®+TINUVIN 765®+DIACETAM 5®
    31. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 52®
    32. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 57®
    33. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 62®
    34. TINUVIN 622®+TINUVIN 765®+ADK STAB LA 67®
    35. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3034®
    36. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3150®
    37. TINUVIN 622®+TINUVIN 765®+GOODRITE UV 3159®
    38. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-9-a) wherein E25 is hydrogen
    39. TINUVIN 622®+TINUVIN 765®+UVINUL 4049®
    40. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-10-a) wherein E29 is hydrogen
    41. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-1-a) wherein E1 is hydrogen
    42. TINUVIN 622®+TINUVIN 765®+SUMISORB TM 61®
    43. TINUVIN 622®+TINUVIN 765®+SANDUVOR 3050®
    44. TINUVIN 622®+TINUVIN 765®+SANDUVOR PR-31®
    45. TINUVIN 622®+TINUVIN 765®+UVASIL 299 LM®
    46. TINUVIN 622®+TINUVIN 765®+UVASIL 2000 LM®
    47. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-6-a) wherein E18 is hydrogen
    48. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-6-a) wherein E18 is methyl
    49. TINUVIN 622®+TINUVIN 765®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    50. TINUVIN 622®+TINUVIN 144®+TINUVIN 123®
    51. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-3-a) wherein E12 is hydrogen
    52. TINUVIN 622®+TINUVIN 144®+HOSTAVIN N 24®
    53. TINUVIN 622®+TINUVIN 144®+DIACETAM 5®
    54. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 52®
    55. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 57®
    56. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 62®
    57. TINUVIN 622®+TINUVIN 144®+ADK STAB LA 67®
    58. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3034®
    59. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3150®
    60. TINUVIN 622®+TINUVIN 144®+GOODRITE UV 3159®
    61. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-9-a) wherein E25 is hydrogen
    62. TINUVIN 622®+TINUVIN 144®+UVINUL 4049®
    63. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-10-a) wherein E29 is hydrogen
    64. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-1-a) wherein E1 is hydrogen
    65. TINUVIN 622®+TINUVIN 144®+SUMISORB TM 61®
    66. TINUVIN 622®+TINUVIN 144®+SANDUVOR 3050®
    67. TINUVIN 622®+TINUVIN 144®+SANDUVOR PR-31®
    68. TINUVIN 622®+TINUVIN 144®+UVASIL 299 LM®
    69. TINUVIN 622®+TINUVIN 144®+UVASIL 2000 LM®
    70. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-6-a) wherein E18 is hydrogen
    71. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-6-a) wherein E18 is methyl
    72. TINUVIN 622®+TINUVIN 144®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    73. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-3-a) wherein E12 is hydrogen
    74. TINUVIN 622®+TINUVIN 123®+HOSTAVIN N 24®
    75. TINUVIN 622®+TINUVIN 123®+DIACETAM 5®
    76. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 52®
    77. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 57®
    78. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 62®
    79. TINUVIN 622®+TINUVIN 123®+ADK STAB LA 67®
    80. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3034®
    81. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3150®
    82. TINUVIN 622®+TINUVIN 123®+GOODRITE UV 3159®
    83. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-9-a) wherein E25 is hydrogen
    84. TINUVIN 622®+TINUVIN 123®+UVINUL 4049®
    85. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-10-a) wherein E29 is hydrogen
    86. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-1-a) wherein E1 is hydrogen
    87. TINUVIN 622®+TINUVIN 123®+SUMISORB TM 61®
    88. TINUVIN 622®+TINUVIN 123®+SANDUVOR 3050®
    89. TINUVIN 622®+TINUVIN 123®+SANDUVOR PR-31®
    90. TINUVIN 622®+TINUVIN 123®+UVASIL 299 LM®
    91. TINUVIN 622®+TINUVIN 123®+UVASIL 2000 LM®
    92. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-6-a) wherein E18 is hydrogen
    93. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-6-a) wherein E18 is methyl
    94. TINUVIN 622®+TINUVIN 123®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    95. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+HOSTAVIN N 24®
    96. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+DIACETAM 5®
    97. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+ADK STAB LA 52®
    98. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+ADK STAB LA 57®
    99. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+ADK STAB LA 62®
    100. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+ADK STAB LA 67®
    101. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+GOODRITE UV 3034®
    102. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+GOODRITE UV 3150®
    103. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+GOODRITE UV 3159®
    104. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-9-a) wherein E25 is hydrogen
    105. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+UVINUL 4049®
    106. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-10-a) wherein E29 is hydrogen
    107. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-1-a) wherein E1 is hydrogen
    108. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+SUMISORB TM 61®
    109. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+SANDUVOR 3050®
    110. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+SANDUVOR PR-31®
    111. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+UVASIL 299 LM®
    112. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+UVASIL 2000 LM®
    113. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-6-a) wherein E18 is hydrogen
    114. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-6-a) wherein E18 is methyl
    115. TINUVIN 622®+compound of the formula (B-3-a) wherein E12 is hydrogen+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    116. TINUVIN 622®+HOSTAVIN N 24®+DIACETAM 5®
    117. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 52®
    118. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 57®
    119. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 62®
    120. TINUVIN 622®+HOSTAVIN N 24®+ADK STAB LA 67®
    121. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3034®
    122. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3150®
    123. TINUVIN 622®+HOSTAVIN N 24®+GOODRITE UV 3159®
    124. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-9-a) wherein E25 is hydrogen
    125. TINUVIN 622®+HOSTAVIN N 24®+UVINUL 4049®
    126. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-10-a) wherein E29 is hydrogen
    127. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-1-a) wherein E1 is hydrogen
    128. TINUVIN 622®+HOSTAVIN N 24®+SUMISORB TM 61®
    129. TINUVIN 622®+HOSTAVIN N 24®+SANDUVOR 3050®
    130. TINUVIN 622®+HOSTAVIN N 24®+SANDUVOR PR-31®
    131. TINUVIN 622®+HOSTAVIN N 24®+UVASIL 299 LM®
    132. TINUVIN 622®+HOSTAVIN N 24®+UVASIL 2000 LM®
    133. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-6-a) wherein E18 is hydrogen
    134. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-6-a) wherein E18 is methyl
    135. TINUVIN 622®+HOSTAVIN N 24®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    136. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 52®
    137. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 57®
    138. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 62®
    139. TINUVIN 622®+DIACETAM 5®+ADK STAB LA 67®
    140. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3034®
    141. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3150®
    142. TINUVIN 622®+DIACETAM 5®+GOODRITE UV 3159®
    143. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-9-a) wherein E25 is hydrogen
    144. TINUVIN 622®+DIACETAM 5®+UVINUL 4049®
    145. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-10-a) wherein E29 is hydrogen
    146. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-1-a) wherein E1 is hydrogen
    147. TINUVIN 622®+DIACETAM 5®+SUMISORB TM 61®
    148. TINUVIN 622®+DIACETAM 5®+SANDUVOR 3050®
    149. TINUVIN 622®+DIACETAM 5®+SANDUVOR PR-31®
    150. TINUVIN 622®+DIACETAM 5®+UVASIL 299 LM®
    151. TINUVIN 622®+DIACETAM 5®+UVASIL 2000 LM®
    152. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-6-a) wherein E18 is hydrogen
    153. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-6-a) wherein E18 is methyl
    154. TINUVIN 622®+DIACETAM 5®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    155. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 57®
    156. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 62®
    157. TINUVIN 622®+ADK STAB LA 52®+ADK STAB LA 67®
    158. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3034®
    159. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3150®
    160. TINUVIN 622®+ADK STAB LA 52®+GOODRITE UV 3159®
    161. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-9-a) wherein E25 is hydrogen
    162. TINUVIN 622®+ADK STAB LA 52®+UVINUL 4049®
    163. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-10-a) wherein E29 is hydrogen
    164. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-1-a) wherein E1 is hydrogen
    165. TINUVIN 622®+ADK STAB LA 52®+SUMISORB TM 61®
    166. TINUVIN 622®+ADK STAB LA 52®+SANDUVOR 3050®
    167. TINUVIN 622®+ADK STAB LA 52®+SANDUVOR PR-31®
    168. TINUVIN 622®+ADK STAB LA 52®+UVASIL 299 LM®
    169. TINUVIN 622®+ADK STAB LA 52®+UVASIL 2000 LM®
    170. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-6-a) wherein E18 is hydrogen
    171. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-6-a) wherein E18 is methyl
    172. TINUVIN 622®+ADK STAB LA 52®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    173. TINUVIN 622®+ADK STAB LA 57®+ADK STAB LA 62®
    174. TINUVIN 622®+ADK STAB LA 57®+ADK STAB LA 67®
    175. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3034®
    176. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3150®
    177. TINUVIN 622®+ADK STAB LA 57®+GOODRITE UV 3159®
    178. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-9-a) wherein E25 is hydrogen
    179. TINUVIN 622®+ADK STAB LA 57®+UVINUL 4049®
    180. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-10-a) wherein E29 is hydrogen
    181. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-1-a) wherein E1 is hydrogen
    182. TINUVIN 622®+ADK STAB LA 57®+SUMISORB TM 61®
    183. TINUVIN 622®+ADK STAB LA 57®+SANDUVOR 3050®
    184. TINUVIN 622®+ADK STAB LA 57®+SANDUVOR PR-31®
    185. TINUVIN 622®+ADK STAB LA 57®+UVASIL 299 LM®
    186. TINUVIN 622®+ADK STAB LA 57®+UVASIL 2000 LM®
    187. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-6-a) wherein E18 is hydrogen
    188. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-6-a) wherein E18 is methyl
    189. TINUVIN 622®+ADK STAB LA 57®+compound of the formula (B-7) with E19, E20 and E2, being a group of the formula (b-III) wherein E22 is hydrogen.
    190. TINUVIN 622®+ADK STAB LA 62®+ADK STAB LA 67®
    191. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3034®
    192. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3150®
    193. TINUVIN 622®+ADK STAB LA 62®+GOODRITE UV 3159®
    194. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-9-a) wherein E25 is hydrogen
    195. TINUVIN 622®+ADK STAB LA 62®+UVINUL 4049®
    196. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-10-a) wherein E29 is hydrogen
    197. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-1-a) wherein E1 is hydrogen
    198. TINUVIN 622®+ADK STAB LA 62®+SUMISORB TM 61®
    199. TINUVIN 622®+ADK STAB LA 62®+SANDUVOR 3050®
    200. TINUVIN 622®+ADK STAB LA 62®+SANDUVOR PR-31®
    201. TINUVIN 622®+ADK STAB LA 62®+UVASIL 299 LM®
    202. TINUVIN 622®+ADK STAB LA 62®+UVASIL 2000 LM®
    203. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-6-a) wherein E18 is hydrogen
    204. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-6-a) wherein E18 is methyl
    205. TINUVIN 622®+ADK STAB LA 62®+compound of the formula (B-7) with E19, E20 and E2, being a group of the formula (b-III) wherein E22 is hydrogen.
    206. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3034®
    207. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3150®
    208. TINUVIN 622®+ADK STAB LA 67®+GOODRITE UV 3159®
    209. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-9-a) wherein E25 is hydrogen
    210. TINUVIN 622®+ADK STAB LA 67®+UVINUL 4049®
    211. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-10-a) wherein E29 is hydrogen
    212. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-1-a) wherein E1 is hydrogen
    213. TINUVIN 622®+ADK STAB LA 67®+SUMISORB TM 61®
    214. TINUVIN 622®+ADK STAB LA 67®+SANDUVOR 3050®
    215. TINUVIN 622®+ADK STAB LA 67®+SANDUVOR PR-31®
    216. TINUVIN 622®+ADK STAB LA 67®+UVASIL 299 LM®
    217. TINUVIN 622®+ADK STAB LA 67®+UVASIL 2000 LM®
    218. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-6-a) wherein E18 is hydrogen
    219. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-6-a) wherein E18 is methyl
    220. TINUVIN 622®+ADK STAB LA 67®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    221. TINUVIN 622®+GOODRITE UV 3034®+GOODRITE UV 3150®
    222. TINUVIN 622®+GOODRITE UV 3034®+GOODRITE UV 3159®
    223. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-9-a) wherein E25 is hydrogen
    224. TINUVIN 622®+GOODRITE UV 3034®+UVINUL 4049®
    225. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-10-a) wherein E29 is hydrogen
    226. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-1-a) wherein E1 is hydrogen
    227. TINUVIN 622®+GOODRITE UV 3034®+SUMISORB TM 61®
    228. TINUVIN 622®+GOODRITE UV 3034®+SANDUVOR 3050®
    229. TINUVIN 622®+GOODRITE UV 3034®+SANDUVOR PR-31®
    230. TINUVIN 622®+GOODRITE UV 3034®+UVASIL 299 LM®
    231. TINUVIN 622®+GOODRITE UV 3034®+UVASIL 2000 LM®
    232. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-6-a) wherein E18 is hydrogen
    233. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-6-a) wherein E18 is methyl
    234. TINUVIN 622®+GOODRITE UV 3034®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    235. TINUVIN 622®+GOODRITE UV 3150®+GOODRITE UV 3159®
    236. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-9-a) wherein E25 is hydrogen
    237. TINUVIN 622®+GOODRITE UV 3150®+UVINUL 4049®
    238. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-10-a) wherein E29 is hydrogen
    239. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-1-a) wherein E1 is hydrogen
    240. TINUVIN 622®+GOODRITE UV 3150®+SUMISORB TM 61®
    241. TINUVIN 622®+GOODRITE UV 3150®+SANDUVOR 3050®
    242. TINUVIN 622®+GOODRITE UV 3150®+SANDUVOR PR-31®
    243. TINUVIN 622®+GOODRITE UV 3150®+UVASIL 299 LM®
    244. TINUVIN 622®+GOODRITE UV 3150®+UVASIL 2000 LM®
    245. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-6-a) wherein E18 is hydrogen
    246. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-6-a) wherein E18 is methyl
    247. TINUVIN 622®+GOODRITE UV 3150®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    248. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-9-a) wherein E25 is hydrogen
    249. TINUVIN 622®+GOODRITE UV 3159®+UVINUL 4049®
    250. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-10-a) wherein E29 is hydrogen
    251. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-1-a) wherein E1 is hydrogen
    252. TINUVIN 622®+GOODRITE UV 3159®+SUMISORB TM 61®
    253. TINUVIN 622®+GOODRITE UV 3159®+SANDUVOR 3050®
    254. TINUVIN 622®+GOODRITE UV 3159®+SANDUVOR PR-31®
    255. TINUVIN 622®+GOODRITE UV 3159®+UVASIL 299 LM®
    256. TINUVIN 622®+GOODRITE UV 3159®+UVASIL 2000 LM®
    257. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-6-a) wherein E18 is hydrogen
    258. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-6-a) wherein E18 is methyl
    259. TINUVIN 622®+GOODRITE UV 3159®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    260. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+UVINUL 4049®
    261. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+compound of the formula (B-10-a) wherein E29 is hydrogen
    262. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+compound of the formula (B-1-a) wherein E1 is hydrogen
    263. TINUVIN 622®+compound of the formula (B-9-a) wherein E26 is hydrogen+SUMISORB TM 61®
    264. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+SANDUVOR 3050®
    265. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+SANDUVOR PR-31®
    266. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+UVASIL 299 LM®
    267. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+UVASIL 2000 LM®
    268. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+compound of the formula (B-6-a) wherein E18 is hydrogen
    269. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+compound of the formula (B-6-a) wherein E18 is methyl
    270. TINUVIN 622®+compound of the formula (B-9-a) wherein E25 is hydrogen+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    271. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-10-a) wherein E29 is hydrogen
    272. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-1-a) wherein E1 is hydrogen
    273. TINUVIN 622®+UVINUL 4049®+SUMISORB TM 61®
    274. TINUVIN 622®+UVINUL 4049®+SANDUVOR 3050®
    275. TINUVIN 622®+UVINUL 4049®+SANDUVOR PR-31®
    276. TINUVIN 622®+UVINUL 4049®+UVASIL 299 LM®
    277. TINUVIN 622®+UVINUL 4049®+UVASIL 2000 LM®
    278. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-6-a) wherein E18 is hydrogen
    279. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-6-a) wherein E18 is methyl
    280. TINUVIN 622®+UVINUL 4049®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    281. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+compound of the formula (B-1-a) wherein E1 is hydrogen
    282. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+SUMISORB TM 61®
    283. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+SANDUVOR 3050®
    284. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+SANDUVOR PR-31®
    285. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+UVASIL 299 LM®
    286. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+UVASIL 2000 LM®
    287. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+compound of the formula (B-6-a) wherein E18 is hydrogen
    288. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+compound of the formula (B-6-a) wherein E18 is methyl
    289. TINUVIN 622®+compound of the formula (B-10-a) wherein E29 is hydrogen+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    290. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+SUMISORB TM 61®
    291. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+SANDUVOR 3050®
    292. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+SANDUVOR PR-31®
    293. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+UVASIL 299 LM®
    294. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+UVASIL 2000 LM®
    295. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+compound of the formula (B-6-a) wherein E18 is hydrogen
    296. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+compound of the formula (B-6-a) wherein E18 is methyl
    297. TINUVIN 622®+compound of the formula (B-1-a) wherein E1 is hydrogen+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    298. TINUVIN 622®+SUMISORB TM 61®+SANDUVOR 3050®
    299. TINUVIN 622®+SUMISORB TM 61®+SANDUVOR PR-31®
    300. TINUVIN 622®+SUMISORB TM 61®+UVASIL 299 LM®
    301. TINUVIN 622®+SUMISORB TM 61®+UVASIL 2000 LM®
    302. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-6-a) wherein E18 is hydrogen
    303. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-6-a) wherein E18 is methyl
    304. TINUVIN 622®+SUMISORB TM 61®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    305. TINUVIN 622®+SANDUVOR 3050®+SANDUVOR PR-31®
    306. TINUVIN 622®+SANDUVOR 3050®+UVASIL 299 LM®
    307. TINUVIN 622®+SANDUVOR 3050®+UVASIL 2000 LM®
    308. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-6-a) wherein E18 is hydrogen
    309. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-6-a) wherein E13 is methyl
    310. TINUVIN 622®+SANDUVOR 3050®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    311. TINUVIN 622®+SANDUVOR PR-31®+UVASIL 299 LM®
    312. TINUVIN 622®+SANDUVOR PR-31®+UVASIL 2000 LM®
    313. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-6-a) wherein E18 is hydrogen
    314. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-6-a) wherein E18 is methyl
    315. TINUVIN 622®+SANDUVOR PR-31®+compound of the formula (B-7) with E19, E20 and E2, being a group of the formula (b-III) wherein E22 is hydrogen.
    316. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-6-a) wherein E18 is hydrogen
    317. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-6-a) wherein E18 is methyl
    318. TINUVIN 622®+UVASIL 299 LM®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    319. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-6-a) wherein E18 is hydrogen
    320. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-6-a) wherein E18 is methyl
    321. TINUVIN 622®+UVASIL 2000 LM®+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.
    322. TINUVIN 622®+compound of the formula (B-6-a) wherein E18 is hydrogen+compound of the formula (B-6-a) wherein E8 is methyl
    323. TINUVIN 622®+compound of the formula (B-6-a) wherein E18 is hydrogen+compound of the formula (B-7) with E19, E20 and E2, being a group of the formula (b-III) wherein E22 is hydrogen.
    324. TINUVIN 622®+compound of the formula (B-6-a) wherein E18 is methyl+compound of the formula (B-7) with E19, E20 and E21 being a group of the formula (b-III) wherein E22 is hydrogen.


Further examples of stabilizer mixtures are those wherein in the above combinations 1 to 324 the commercial product TINUVIN 622® is replaced by a compound of the formula (A-2-a) and/or (A-2-b)




wherein n2 and n2* are a number from 2 to 20.

Additional examples of stabilizer mixtures are those wherein in the above combinations 1 to 324 the commercial product TINUVIN 622® is replaced by a compound of the formula (A-4-a)




wherein n4 is a number from 2 to 20, and

at least 50% of the radicals A7 are a group of the formula





and the remaining radicals A7 are ethyl.

Combinations of particular interest are numbers 1, 4, 7, 8, 12, 13 and 15 to 24, and the corresponding combinations wherein TINUVIN 622® is replaced by a compound of the formula (A-2-a) and/or (A-2-b).
Further combinations of particular interest are numbers 3, 4, 8, 17 and 31.
The commercial product TINUVIN 622® corresponds to the compound of the formula (A-1-a).
The commercial product TINUVIN 770® corresponds to the compound of the formula (B-1-b) wherein E1 is hydrogen.
The commercial product TINUVIN 765® corresponds to the compound of the formula (B-1-b) wherein E1 is methyl.
The commercial product TINUVIN 123® corresponds to the compound of the formula (B-1-b) wherein E1 is octyloxy.
The commercial product TINUVIN 144® corresponds to the compound of the formula (B-1-c) wherein E1 is methyl.
The commercial product ADK STAB LA 57® corresponds to the compound of the formula (B-1-d) wherein E1 is hydrogen.
The commercial product ADK STAB LA 52® corresponds to the compound of the formula (B-1-d) wherein E1 is methyl.
The commercial product ADK STAB LA 67® corresponds to the compound of the formula (B-2-a) wherein E8 is hydrogen.
The commercial product ADK STAB LA 62® corresponds to the compound of the formula (B-2-a) wherein E1 is methyl.
The commercial product HOSTAVIN N 24® corresponds to the compound of the formula (B-3-b) wherein E12 is hydrogen.
The commercial product SANDUVOR 3050® corresponds to the compound of the formula (B-3-b-1) shown below, wherein E12 is hydrogen.
The commercial product DIACETAM 5® corresponds to the compound of the formula (B-4-a) wherein E13 is hydrogen.
The commercial product SUMISORB TM 61 corresponds to the compound of the formula (B-4-b) wherein E13 is hydrogen.
The commercial product UVINUL 4049® corresponds to the compound of the formula (B-5) wherein E16 is hydrogen.
The commercial product SANDUVOR PR 31® corresponds to the compound of the formula (B-8-a) wherein E23 is methyl.
The commercial product GOODRITE 3034® corresponds to the compound of the formula (B-9-b) wherein E25 is hydrogen.
The commercial product GOODRITE 3150® corresponds to the compound of the formula (B-9-c) wherein E25 is hydrogen.
The commercial product GOODRITE 3159® corresponds to the compound of the formula (B-9-c) wherein E25 is methyl.
The commercial product UVASIL 299 LM® or UVASIL 2000 LM® contains as active ingredient the compound of the formula (B-11-a) wherein R16 is hydrogen.
The compound of the formula (B-3-b-1) has the following structure:




The stabilizer mixture according to this invention is suitable for stabilizing organic materials against degradation induced by light, heat or oxidation. Examples of such organic materials are the following:
1. Polymers of monoolefins and diolefins, for example polypropylene, polyisobutylene, polybut-1-ene, poly-4-methylpent-1-ene, polyisoprene or polybutadiene, as well as polymers of cycloolefins, for instance of cyclopentene or norbornene, polyethylene (which optionally can be crosslinked), for example high density polyethylene (HDPE), high density and high molecular weight polyethylene (HDPE-HMW), high density and ultrahigh molecular weight polyethylene (HDPE-UHMW), medium density polyethylene (MOPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE), (VLDPE) and (ULDPE).
Polyolefins, i.e. the polymers of monoolefins exemplified in the preceding paragraph, preferably polyethylene and polypropylene, can be prepared by different, and especially by the following, methods:

    
    
        a) radical polymerisation (normally under high pressure and at elevated temperature).
        b) catalytic polymerisation using a catalyst that normally contains one or more than one metal of groups IVb, Vb, VIb or VIII of the Periodic Table. These metals usually have one or more than one ligand, typically oxides, halides, alcoholates, esters, ethers, amines, alkyls, alkenyls and/or aryls that may be either π- or σ-coordinated. These metal complexes may be in the free form or fixed on substrates, typically on activated magnesium chloride, titanium(III) chloride alumina or silicon oxide. These catalysts may be soluble or insoluble in the polymerisation medium. The catalysts can be used by themselves in the polymerisation or further activators may be used, typically metal alkyls, metal hydrides, metal alkyl halides, metal alkyl oxides or metal alkyloxanes, said metals being elements of groups Ia, IIa and/or IIIa of the Periodic Table. The activators may be modified conveniently with further ester, ether, amine or silyl ether groups. These catalyst systems are usually termed Phillips, Standard Oil Indiana, Ziegler (-Natta), TNZ (DuPont), metallocene or single site catalysts (SSC).

2. Mixtures of the polymers mentioned under 1), for example mixtures of polypropylene with polyisobutylene, polypropylene with polyethylene (for example PP/HDPE, PP/LDPE) and mixtures of different types of polyethylene (for example LDPE/HDPE).

3. Copolymers of monoolefins and diolefins with each other or with other vinyl monomers, for example ethylene/propylene copolymers, linear low density polyethylene (LLDPE) and mixtures thereof with low density polyethylene (LDPE), propylene/but-1-ene copolymers, propylene/isobutylene copolymers, ethylene/but-1-ene copolymers, ethylene/hexene copolymers, ethylene/methylpentene copolymers, ethylene/heptene copolymers, ethylene/octene copolymers, propylene/butadiene copolymers, isobutylene/isoprene copolymers, ethyllene/alkyl acrylate copolymers, ethylene/alkyl methacrylate copolymers, ethylene/vinyl acetate copolymers and their copolymers with carbon monoxide or ethylene/acrylic acid copolymers and their salts (ionomers) as well as terpolymers of ethylene with propylene and a diene such as hexadiene, dicyclopentadiene or ethylidene-norbornene; and mixtures of such copolymers with one another and with polymers mentioned in 1) above, for example polypropylene/ethylene-propylene copolymers, LDPE/ethylene-vinyl acetate copolymers (EVA), LDPE/ethylene-acrylic acid copolymers (EAA), LLDPE/EVA, LLDPE/EAA and alternating or random polyalkylene/carbon monoxide copolymers and mixtures thereof with other polymers, for example polyamides.

4. Hydrocarbon resins (for example C5-C9) including hydrogenated modifications thereof (e.g. tackifiers) and mixtures of polyalkylenes and starch.

5. Polystyrene, poly(p-methylstyrene), poly(α-methylstyrene).

6. Copolymers of styrene or α-methylstyrene with dienes or acrylic derivatives, for example styrene/butadiene, styrene/acrylonitrile, styrene/alkyl methacrylate, styrene/butadiene/alkyl acrylate, styrene/butadiene/alkyl methacrylate, styrene/maleic anhydride, styrene/acrylonitrile/methyl acrylate; mixtures of high impact strength of styrene copolymers and another polymer, for example a polyacrylate, a diene polymer or an ethylene/propylene/diene terpolymer; and block copolymers of styrene such as styrene/butadiene/styrene, styrene/isoprene/styrene, styrene/ethylene/butylene/styrene or styrene/ethylene/propylene/styrene.

7. Graft copolymers of styrene or α-methylstyrene, for example styrene on polybutadiene, styrene on polybutadiene-styrene or polybutadiene-acrylonitrile copolymers; styrene and acrylonitrile (or methacrylonitrile) on polybutadiene; styrene, acrylonitrile and methyl methacrylate on polybutadiene; styrene and maleic anhydride on polybutadiene; styrene, acrylonitrile and maleic anhydride or maleimide on polybutadiene; styrene and maleimide on polybutadiene; styrene and alkyl acrylates or methacrylates on polybutadiene; styrene and acrylonitrile on ethylene/propylene/diene terpolymers; styrene and acrylonitrile on polyalkyl acrylates or polyalkyl methacrylates, styrene and acrylonitrile on acrylate/butadiene copolymers, as well as mixtures thereof with the copolymers listed under 6), for example the copolymer mixtures known as ABS, MBS, ASA or AES polymers.

8. Halogen-containing polymers such as polychloroprene, chlorinated rubbers, chlorinated and brominated copolymer of isobutylene-isoprene (halobutyl rubber), chlorinated or sulfo-chlorinated polyethylene, copolymers of ethylene and chlorinated ethylene, epichlorohydrin homo- and copolymers, especially polymers of halogen-containing vinyl compounds, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl fluoride, polyvinylidene fluoride, as well as copolymers thereof such as vinyl chloride/vinylidene chloride, vinyl chloride/vinyl acetate or vinylidene chloride/vinyl acetate copolymers.

9. Polymers derived from α,β-unsaturated acids and derivatives thereof such as polyacrylates and polymethacrylates; polymethyl methacrylates, polyacrylamides and polyacrylonitriles, impact-modified with butyl acrylate.

10. Copolymers of the monomers mentioned under 9) with each other or with other unsaturated monomers, for example acrylonitrile/butadiene copolymers, acrylonitrile/alkyl acrylate copolymers, acrylonitrile/alkoxyalkyl acrylate or acrylonitrile/vinyl halide copolymers or acrylonitrile/alkyl methacrylate/butadiene terpolymers.

11. Polymers derived from unsaturated alcohols and amines or the acyl derivatives or acetals thereof, for example polyvinyl alcohol, polyvinyl acetate, polyvinyl stearate, polyvinyl benzoate, polyvinyl maleate, polyvinyl butyral, polyallyl phthalate or polyallyl melamine; as well as their copolymers with olefins mentioned in 1) above.

12. Homopolymers and copolymers of cyclic ethers such as polyalkylene glycols, polyethyllene oxide, polypropylene oxide or copolymers thereof with bisglycidyl ethers.

13. Polyacetals such as polyoxymethylene and those polyoxymethylenes which contain ethylene oxide as a comonomer; polyacetals modified with thermoplastic polyurethanes, acrylates or MBS.

14, Polyphenylene oxides and sulfides, and mixtures of polyphenylene oxides with styrene polymers or polyamides.

15. Polyurethanes derived from hydroxyl-terminated polyethers, polyesters or polybutadienes on the one hand and aliphatic or aromatic polyisocyanates on the other, as well as precursors thereof.

16. Polyamides and copolyamides derived from diamines and dicarboxylic acids and/or from aminocarboxylic acids or the corresponding lactams, for example polyamide 4, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12, 4/6, 12/12, polyamide 11, polyamide 12, aromatic polyamides starting from m-xylene diamine and adipic acid; polyamides prepared from hexamethylenediamine and isophthalic or/and terephthalic acid and with or without an elastomer as modifier, for example poly-2,4,4,-trimethylhexamethylene terephthalamide or poly-m-phenylene isophthalamide; and also block copolymers of the aforementioned polyamides with polyolefins, olefin copolymers, ionomers or chemically bonded or grafted elastomers; or with polyethers, e.g. with polyethylene glycol, polypropylene glycol or polytetramethylene glycol; as well as polyamides or copolyamides modified with EPDM or ABS; and polyamides condensed during processing (RIM polyamide systems).

17. Polyureas, polyimides, polyamide-imides, polyetherimids, polyesterimids, polyhydantoins and polybenzimidazoles.

18. Polyesters derived from dicarboxylic acids and diols and/or from hydroxycarboxylic acids or the corresponding lactones, for example polyethylene terephthalate, polybutylene terephthalate, poly-1,4-dimethylolcyclohexane terephthalate, polyalkylene naphthalate (PAN) and polyhydroxybenzoates, as well as block copolyether esters derived from hydroxyl-terminated polyethers; and also polyesters modified with polycarbonates or MBS.

19. Polycarbonates and polyester carbonates.

20. Polysulfones, polyether sulfones and polyether ketones.

21. Crosslinked polymers derived from aldehydes on the one hand and phenols, ureas and melamines on the other hand, such as phenol/formaldehyde resins, urea/formaldehyde resins and melamine/formaldehyde resins.

22. Drying and non-drying alkyd resins.

23. Unsaturated polyester resins derived from copolyesters of saturated and unsaturated dicarboxylic acids with polyhydric alcohols and vinyl compounds as crosslinking agents, and also halogen-containing modifications thereof of low flammability.

24. Crosslinkable acrylic resins derived from substituted acrylates, for example epoxy acrylates, urethane acrylates or polyester acrylates.

25. Alkyd resins, polyester resins and acrylate resins crosslinked with melamine resins, urea resins, isocyanates, isocyanurates, polyisocyanates or epoxy resins.

26. Crosslinked epoxy resins derived from aliphatic, cycloaliphatic, heterocyclic or aromatic glycidyl compounds, e.g. products of diglycidyl ethers of bisphenol A and bisphenol F, which are crosslinked with customary hardeners such as anhydrides or amines, with or without accelerators.

27. Natural polymers such as cellulose, rubber, gelatin and chemically modified homologous derivatives thereof, for example cellulose acetates, cellulose propionates and cellulose butyrates, or the cellulose ethers such as methyl cellulose; as well as rosins and their derivatives.

28. Blends of the aforementioned polymers (polyblends), for example PP/EPDM, Polyamide/EPDM or ABS, PVC/EVA, PVC/ABS, PVC/MBS, PC/ABS, PBTP/ABS, PC/ASA, PC/PBT, PVC/CPE, PVC/acrylates, POM/thermoplastic PUR, PC/thermoplastic PUR, POM/acrylate, POM/MBS, PPO/HIPS, PPO/PA 6.6 and copolymers, PA/HDPE, PA/PP, PA/PPO, PBT/PC/ABS or PBT/PET/PC.

29. Naturally occurring and synthetic organic materials which are pure monomeric compounds or mixtures of such compounds, for example mineral oils, animal and vegetable fats, oil and waxes, or oils, fats and waxes based on synthetic esters (e.g. phthalates, adipates, phosphates or trimellitates) and also mixtures of synthetic esters with mineral oils in any weight ratios, typically those used as spinning compositions, as well as aqueous emulsions of such materials.

30. Aqueous emulsions of natural or synthetic rubber, e.g. natural latex or latices of carboxylated styrene/butadiene copolymers.

    
    


This invention therefore additionally relates to a composition comprising an organic material subject to degradation induced by light, heat or oxidation and the stabilizer mixture described herein above.
A further embodiment of the present invention is a method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating into the organic material the stabilizer mixture described herein above.
The organic material is preferably a synthetic polymer, in particular from one of the above groups. Polyolefins are preferred and polyethylene, polypropylene, a polyethylene copolymer and a polypropylene copolymer are particularly preferred.
The compounds of components (A) and (B) may be added to the organic material to be stabilized either individually or mixed with one another.
Each of the compounds of components (A) and (B) may be present in the organic material in an amount of preferably 0.005 to 5%, in particular 0.01 to 1% or 0.05 to 1%, relative to the weight of the organic material.
The weight ratio of the components (A):(B) is preferably 10:1 to 1:100, in particular 10:1 to 1:10 or 5:1 to 1:5. Further examples for the weight ratio are also 1:1 to 1:10, for example 1:2 to 1:5.
The weight ratio of the two components forming component (B) is for example 1:10 to 10:1 or 1:5 to 5:1, preferably 1:2 to 2:1, in particular 1:1.
The above components can be incorporated into the organic material to be stabilized by known methods, for example before or during shaping or by applying the dissolved or dispersed compounds to the organic material, if necessary with subsequent evaporation of the solvent. The components can be added to the organic material in the form of a powder, granules or a masterbatch, which contains these components in, for example, a concentration of from 2.5 to 25% by weight.
If desired, the compounds of components (A) and (B) can be blended with each other before incorporation in the organic material. They can be added to a polymer before or during the polymerization or before the crosslinking.
The materials stabilized according to this invention can be used in a wide variety of forms, for example as films, fibres, tapes, moulding compositions, profiles or as binders for paints, adhesives or putties.
The stabilized material may additionally also contain various conventional additives, for example:
1. Antioxidants
1.1. Alkylated monophenols, for example 2,6-di-tert-butyl-4-methylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2,6-di-tert-butyl-4-n-butylphenol, 2,6-di-tert-butyl-4-isobutylphenol, 2,6-dicyclopentyl-4-methylphenol, 2-(α-methylcyclohexyl)-4,6-dimethylphenol, 2,6-dioctadecyl-4-methyl phenol, 2,4,6-tricyclohexylphenol, 2,6-di-tert-butyl-4-methoxymethylphenol, nonylphenols which are linear or branched in the side chains, for example 2,6-di-nonyl-4-methylphenol, 2,4-dimethyl-6-(1′-methylundec-1′-yl)phenol, 2,4-dimethyl-6-(1′-methylheptadec-1′-yl)phenol, 2,4-dimethyl-6-(1′-methyltridec-1′-yl)phenol and mixtures thereof.

1.2. Alkylthiomethylphenols, for example 2,4-dioctylthiomethyl-6-tert-butylphenol, 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol, 2,6-di-dodecylthiomethyl-4-nonylphenol.

1.3. Hydroquinones and alkylated hydroquinones, for example 2,6-di-tert-butyl-4-methoxyphenol, 2,5-di-tert-butylhydroquinone, 2,5-di-tert-amylhydroquinone, 2,6-diphenyl-4-octadecyloxyphenol, 2,6-di-tert-butylhydroquinone, 2,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyanisole, 3,5-di-tert-butyl-4-hydroxyphenyl stearate, bis(3,5-di-tert-butyl-4-hydroxyphenyl) adipate.

1.4. Tocopherols, for example α-tocopherol, β-tocopherol, γ-tocopherol, δ-tocopherol and mixtures thereof (vitamin E).

1.5. Hydroxylated thiodiphenyl ethers, for example 2, 2′-thiobis(6-tert-butyl-4-methylphenol), 2,2′-thiobis(4-octylphenol), 4,4′-thiobis(6-tert-butyl-3-methylphenol), 4,4′-thiobis(6-tert-butyl-2-methylphenol), 4,4′-thiobis(3,6-di-sec-amylphenol), 4,4′-bis(2,6-dimethyl-4-hydroxyphenyl)disulfide.

1.6. Alkylidenebisphenols, for example 2, 2′-methylenebis(6-tert-butyl-4-methylphenol), 2,2′-methylenebis(6-tert-butyl-4-ethylphenol), 2,2′-methylenebis[4-methyl-6-(α-methylcyclohexyl)phenol], 2,2′-methylenebis(4-methyl-6-cyclohexylphenol), 2,2′-methylenebis(6-nonyl-4-methylphenol), 2,2′-methylenebis(4,6-di-tert-butylphenol), 2,2′-ethylidenebis(4,6-di-tert-butylphenol), 2,2′-ethylidenebis(6-tert-butyl-4-isobutylphenol), 2,2′-methylenebis[6-(α-methylbenzyl)-4-nonylphenol], 2,2′-methylenebis[6-(α,α-dimethylbenzyl)-4-nonylphenol], 4,4′-methylenebis(2,6-di-tert-butylphenol), 4,4′-methylenebis(6-tert-butyl-2-methylphenol), 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 2,6-bis(3-tert-butyl-5-methyl-2-hydroxybenzyl)-4-methylphenol, 1,1,3-tris(5-tert-butyl-4-hydroxy-2-methylphenyl)butane, 1,1-bis(5-tert-butyl-4-hydroxy-2-methylphenyl)-3-n-dodecylmercaptobutane, ethylene glycol bis[3,3-bis(3′-tert-butyl-4′-hydroxyphenyl)butyrate], bis(3-tert-butyl-4-hydroxy-5-methyl-phenyl)dicyclopentadiene, bis[2-(3′-tert-butyl-2′-hydroxy-5′-methylbenzyl)-6-tert-butyl-4-methylphenyl]terephthalate, 1,1-bis-(3,5-dimethyl-2-hydroxyphenyl)butane, 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane, 2,2-bis-(5-tert-butyl-4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1,1,5,5-tetra(5-tert-butyl-4-hydroxy-2-methylphenyl)pentane.

1.7. O-, N- and S-benzyl compounds, for example 3, 5,3′,5′-tetra-tert-butyl-4,4′-dihydroxydibenzyl ether, octadecyl-4-hydroxy-3,5-dimethylbenzylmercaptoacetate, tridecyl-4-hydroxy-3,5-di-tert-butylbenzylmercaptoacetate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)amine, bis(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)dithioterephthalate, bis(3,5-di-tert-butyl-4-hydroxybenzyl)sulfide, isooctyl-3,5-di-tert-butyl-4-hydroxybenzylmercaptoacetate.

1.8. Hydroxybenzylated malonates, for example dioctadecyl-2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate, di-octadecyl-2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate, didodecylmercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate, bis[4-(1,1,3,3-tetramethylbutyl)phenyl]-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.

1.9. Aromatic hydroxybenzyl compounds, for example 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,4-bis(3,5-di-tert-butyl-4-hydroxybenzyl)-2,3,5,6-tetramethylbenzene, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)phenol.

1.10. Triazine compounds, for example 2,4-bis(octylmercapto)-6-(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyanilino)-1,3,5-triazine, 2-octylmercapto-4,6-bis(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazine, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,2,3-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate, 2,4,6-tris(3,5-di-tert-butyl-4-hydroxyphenylethyl)-1,3,5-triazine, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxy-phenylpropionyl)-hexahydro-1,3,5-triazine, 1,3,5-tris(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate.

1.11. Benzylphosphonates, for example dimethyl-2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-3,5-di-tert-butyl-4-hydroxybenzylphosphonate, dioctadecyl-5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, the calcium salt of the monoethyl ester of 3,5-di-tert-butyl-4-hydroxybenzylphosphonic acid.

1.12. Acylaminophenols, for example 4-hydroxylauranilide, 4-hydroxystearanilide, octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.

1.13. Esters of β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.14. Esters of β-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, n-octanol, i-octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane; 3,9-bis[2-{3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]-undecane.

1.15. Esters of 3-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.16. Esters of 3,5-di-tert-butyl-4-hydroxyphenyl acetic acid with mono- or polyhydric alcohols, e.g. with methanol, ethanol, octanol, octadecanol, 1,6-hexanediol, 19-nonanediol, ethylene glycol, 1,2-propanediol, neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene glycol, pentaerythritol, tris(hydroxyethyl)isocyanurate, N,N′-bis(hydroxyethyl)oxamide, 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane, 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.

1.17. Amides of 1-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid e.g. N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamide, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylenediamide, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazide, N,N′-bis[2-(3-[3,5-di-tert-butyl-4-hydroxyphenyl]propionyloxy)ethyl]oxamide (Naugard®XL-1, supplied by Uniroyal).

1.18. Ascorbic acid (vitamin C)

1.19. Aminic antioxidants, for example N,N′-di-isopropyl-p-phenylenediamine, N,N′-di-sec-butyl-p-phenylenediamine, N,N′-bis(1,4-dimethylpentyl)-p-phenylenediamine, N,N′-bis(1-ethyl-3-methylpentyl)-p-phenylenediamine, N,N′-bis(1-methylheptyl)-p-phenylenediamine, N,N′-dicyclohexyl-p-phenylenediamine, N,N′-diphenyl-p-phenylenediamine, N,N′-bis(2-naphthyl)-p-phenylenediamine, N-isopropyl-N′-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine, N-(1-methylheptyl)-N′-phenyl-p-phenylenediamine, N-cyclohexyl-N′-phenyl-p-phenylenediamine, 4-(p-toluenesulfamoyl)diphenylamine, N,N′-dimethyl-N,N′-di-sec-butyl-p-phenylenediamine, diphenylamine, N-allyldiphenylamine, 4-isopropoxydiphenylamine, N-phenyl-1-naphthylamine, N-(4-tert-octylphenyl)-1-naphthylamine, N-phenyl-2-naphthylamine, octylated diphenylamine, for example p,p′-di-tert-octyldiphenylamine, 4-n-butylaminophenol, 4-butyrylaminophenol, 4-nonanoylaminophenol, 4-dodecanoylaminophenol, 4-octadecanoylaminophenol, bis(4-methoxyphenyl)amine, 2,6-di-tert-butyl-4-dimethylaminomethylphenol, 2,4′-diaminodiphenylmethane, 4,4′-diaminodiphenylmethane, N,N, N′,N′-tetramethyl-4,4′-diaminodiphenylmethane, 1,2-bis[(2-methylphenyl)amino]ethane, 1,2-bis(phenylamino)propane, (o-tolyl)biguanide, bis[4-(1′,3′-dimethylbutyl)phenyl]amine, tert-octylated N-phenyl-1-naphthylamine, a mixture of mono- and dialkylated tert-butyl/tert-octyldiphenylamines, a mixture of mono- and dialkylated nonyldiphenylamines, a mixture of mono- and dialkylated dodecyldiphenylamines, a mixture of mono- and dialkylated isopropyl/isohexyldiphenylamines, a mixture of mono- and dialkylated tert-butyldiphenylamines, 2,3-dihydro-3,3-dimethyl-4H-1,4-benzothiazine, phenothiazine, a mixture of mono- and dialkylated tert-butyl/tert-octylphenothiazines, a mixture of mono- and dialkylated tert-octylphenothiazines, N-allylphenothiazine, N N,N′,N′-tetraphenyl-1,4-diaminobut-2-ene, N,N-bis(2,2,6,6-tetramethylpiperid-4-yl-hexamethylenediamine, bis(2,2,6,6-tetramethylpiperid-4-yl)sebacate, 2,2,6,6-tetramethylpiperidin-4-one, 2,2,6,6-tetramethylpiperidin-4-ol.

2. UV absorbers and light stabilisers

2.1. 2-(2′-Hydroxyphenyl)benzotriazoles, for example 2-(2′-hydroxy-5′-methylphenyl)benzotriazole, 2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(5′-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-5′-(1,1,3,3-tetramethylbutyl)phenyl)benzotriazole, 2-(3′,5′-di-tert-butyl-2′-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-methylphenyl)-5-chlorobenzotriazole, 2-(3′-sec-butyl-5′-tert-butyl-2′-hydroxyphenyl)benzotriazole, 2-(2′-hydroxy-4′-octyloxyphenyl)benzotriazole, 2-(3′,5′-di-tert-amyl-2′-hydroxyphenyl)benzotriazole, 2-(3′,5′-bis(α,α-dimethylbenzyl)-2′-hydroxyphenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)-5-chlorobenzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-methoxycarbonylethyl)phenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-octyloxycarbonylethyl)phenyl)benzotriazole, 2-(3′-tert-butyl-5′-[2-(2-ethylhexyloxy)carbonylethyl]-2′-hydroxyphenyl)benzotriazole, 2-(3′-dodecyl-2′-hydroxy-5′-methylphenyl)benzotriazole, 2-(3′-tert-butyl-2′-hydroxy-5′-(2-isooctyloxycarbonylethyl)phenylbenzotriazole, 2,2′-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazole-2-ylphenol]; the transesterification product of 2-[3′-tert-butyl-5′-(2-methoxycarbonylethyl)-2′-hydroxyphenyl]-2H-benzotriazole with polyethylene glycol 300;





where R=3′-tert-butyl-4′-hydroxy-5′-2H-benzotriazol-2-ylphenyl, 2-[2′-hydroxy-3′-(α,α-dimethylbenzyl)-5′-(1,1,3,3-tetramethylbutyl)phenyl]-benzotriazole; 2-[2′-hydroxy-3′-(1,1,3,3-tetramethylbutyl)-5′-(α,α-dimethylbenzyl)phenyl]benzotriazole.

2.2. 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octyloxy, 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2′,4′-trihydroxy and 2′-hydroxy-4,4′-dimethoxy derivatives.

2.3. Esters of substituted and unsubstituted benzoic acids, for example 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate, dibenzoyl resorcinol, bis(4-tert-butylbenzoyl)resorcinol, benzoyl resorcinol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, octadecyl 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate.

2.4. Acrylates, for example ethyl α-cyano-β,β-diphenylacrylate, isooctyl α-cyano-β,β-diphenylacrylate, methyl α-carbomethoxycinnamate, methyl α-cyano-1-methyl-p-methoxycinnamate, butyl α-cyano-β-methyl-p-methoxycinnamate, methyl α-carbomethoxy-p-methoxycinnamate and N-(β-carbomethoxy-β-cyanovinyl)-2-methylindoline.

2.5. Nickel compounds, for example nickel complexes of 2,2′-thiobis[4-(1,1,3,3-tetramethylbutyl)phenol], such as the 1:1 or 1:2 complex, with or without additional ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanolamine, nickel dibutyldithiocarbamate, nickel salts of the monoalkyl esters, e.g. the methyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic acid, nickel complexes of ketoximes, e.g. of 2-hydroxy-4-methylphenylundecylketoxime, nickel complexes of 1-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.

2.6. Oxamides, for example 4, 4′-dioctyloxyoxanilide, 2,2′-diethoxyoxanilide, 2,2′-dioctyloxy-5,5′-di-tert-butoxanilide, 2,2′-didodecyloxy-5,5′-di-tert-butoxanilide, 2-ethoxy-2′-ethyloxanilide, N,N′-bis(3-dimethylaminopropyl)oxamide, 2-ethoxy-5-tert-butyl-2′-ethoxanilide and its mixture with 2-ethoxy-2′-ethyl-5,4′-di-tert-butoxanilide, mixtures of o- and p-methoxy-disubstituted oxanilides and mixtures of o- and p-ethoxy-disubstituted oxanilides.

2.7. 2-(2-Hydroxyphenyl)-1,3,5-triazines, for example 2,4,6-tris(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2,4-dihydroxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2,4-bis(2-hydroxy-4-propyloxyphenyl)-6-(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-octyloxyphenyl)-4,6-bis(4-methylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-dodecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-tridecyloxyphenyl)-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropoxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropyloxy)phenyl]-4,6-bis(2,4-dimethyl)-1,3,5-triazine, 2-[4-(dodecyloxy/tridecyloxy-2-hydroxypropoxy)-2-hydroxyphenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-[2-hydroxy-4-(2-hydroxy-3-dodecyloxypropoxy)phenyl]-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-hexyloxy)phenyl-4,6-diphenyl-1,3,5-triazine, 2-(2-hydroxy-4-methoxyphenyl)-4,6-diphenyl-1,3,5-triazine, 2,4,6-tris[2-hydroxy-4-(3-butoxy-2-hydroxypropoxy)phenyl]-1,3,5-triazine, 2-(2-hydroxyphenyl)-4-(4-methoxyphenyl)-6-phenyl-1,3,5-triazine, 2-{2-hydroxy-4-[3-(2-ethylhexyl-1-oxy)-2-hydroxypropyloxy]phenyl}-4,6-bis(2,4-dimethylphenyl)-1,3,5-triazine.

3. Metal deactivators, for example N,N′-diphenyloxamide, N-salicylal-N′-salicyloyl hydrazine, N,N′-bis(salicyloyl)hydrazine, N,N′-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine, 3-salicyloylamino-1,2,4-triazole, bis(benzylidene)oxalyl dihydrazide, oxanilide, isophthaloyl dihydrazide, sebacoyl bisphenylhydrazide, N,N′-diacetyladipoyl dihydrazide, N,N′-bis(salicyloyl)oxalyl dihydrazide, N,N′-bis(salicyloyl)thiopropionyl dihydrazide.

4. Phosphites and phosphonites, for example triphenyl phosphite, diphenylalkyl phosphites, phenyldialkyl phosphites, tris(nonylphenyl) phosphite, trilauryl phosphite, trioctadecyl phosphite, distearylpentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite, diisodecyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,4-dicumylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, diisodecyloxypentaerythritol diphosphite, bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite, bis(2,4,6-tris(tert-butylphenyl)pentaerythritol diphosphite, tristearyl sorbitol triphosphite, tetrakis(2,4-di-tert-butylphenyl) 4,4′-biphenylene diphosphonite, 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1,3,2-dioxaphosphocin, bis(2,4-di-tert-butyl-6-methylphenyl)methyl phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite, 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]-1,3,2-dioxaphosphocin, 2,2′,2′′-nitrilo-[triethyltris(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite], 2-ethylhexyl(3,3′,5,5′-tetra-tert-butyl-1,1′-biphenyl-2,2′-diyl)phosphite, 5-butyl-5-ethyl-2-(2,4,6-tri-tert-butylphenoxy)-1,3,2-dioxaphosphirane.

The following phosphites are especially preferred:
Tris(2,4-di-tert-butylphenyl) phosphite (Irgafos® 168, Ciba-Geigy), tris(nonylphenyl) phosphite,




5. Hydroxylamines, for example N,N-dibenzylhydroxylamine, N,N-diethylhydroxylamine, N,N-dioctylhydroxylamine, N,N-dilaurylhydroxylamine, N,N-ditetradecylhydroxylamine, N,N-dihexadecylhydroxylamine, N,N-dioctadecylhydroxylamine, N-hexadecyl-N-octadecylhydroxylamine, N-heptadecyl-N-octadecylhydroxylamine, N,N-dialkylhydroxylamine derived from hydrogenated tallow amine.

6. Nitrones, for example N-benzyl-alpha-phenylnitrone, N-ethyl-alpha-methylnitrone, N-octyl-alpha-heptylnitrone, N-lauryl-alpha-undecylnitrone, N-tetradecyl-alpha-tridecylnitrone, N-hexadecyl-alpha-pentadecylnitrone, N-octadecyl-alpha-heptadecylnitrone, N-hexadecyl-alpha-heptadecylnitrone, N-octadecyl-alpha-pentadecylnitrone, N-heptadecyl-alpha-heptadecylnitrone, N-octadecyl-alpha-hexadecylnitrone, nitrone derived from N,N-dialkylhydroxylamine derived from hydrogenated tallow amine.

7. Thiosynergists, for example dilauryl thiodipropionate or distearyl thiodipropionate.

8. Peroxide scavengers, for example esters of p-thiodipropionic acid, for example the lauryl, stearyl, myristyl or tridecyl esters, mercaptobenzimidazole or the zinc salt of 2-mercaptobenzimidazole, zinc dibutyldithiocarbamate, dioctadecyl disulfide, pentaerythritol tetrakis(β-dodecylmercapto)propionate.

9. Polyamide stabilisers, for example copper salts in combination with iodides and/or phosphorus compounds and salts of divalent manganese.

10. Basic co-stabilisers, for example melamine, polyvinylpyrrolidone, dicyandiamide, triallyl cyanurate, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes, alkali metal salts and alkaline earth metal salts of higher fatty acids, for example calcium stearate, zinc stearate, magnesium behenate, magnesium stearate, sodium ricinoleate and potassium palmitate, antimony pyrocatecholate or zinc pyrocatecholate.

11. Nucleating agents, for example inorganic substances, such as talcum, metal oxides, such as titanium dioxide or magnesium oxide, phosphates, carbonates or sulfates of, preferably, alkaline earth metals; organic compounds, such as mono- or polycarboxylic acids and the salts thereof, e.g. 4-tert-butylbenzoic acid, adipic acid, diphenylacetic acid, sodium succinate or sodium benzoate; polymeric compounds, such as ionic copolymers (ionomers). Especially preferred are 1,3:2,4-bis(3′,4′-dimethylbenzylidene)sorbitol, 1,3:2,4-di(paramethyldibenzylidene)sorbitol, and 1,3:2,4-di(benzylidene)sorbitol.

12. Fillers and reinforcing agents, for example calcium carbonate, silicates, glass fibres, glass bulbs, asbestos, talc, kaolin, mica, barium sulfate, metal oxides and hydroxides, carbon black, graphite, wood flour and flours or fibers of other natural products, synthetic fibers.

13. Other additives, for example plasticisers, lubricants, emulsifiers, pigments, rheology additives, catalysts, flow-control agents, optical brighteners, flameproofing agents, antistatic agents and blowing agents.

14. Benzofuranones and indolinones, for example those disclosed in U.S. Pat. No. 4,325,863; U.S. Pat. No. 4,338,244; U.S. Pat. No. 5,175,312; U.S. Pat. No. 5,216,052; U.S. Pat. No. 5,252,643; DE-A-4316611; DE-A-4316622; DE-A-4316876; EP-A-0589839 or EP-A-0591102 or 3-[4-(2-acetoxyethoxy)phenyl]-5,7-di-tert-butyl benzofuran-2-one, 5,7-di-tert-butyl-3-[4-(2-stearoyloxyethoxy)phenyl]-benzofuran-2-one, 3,3′-bis[5,7-di-tert-butyl-3-(4-[2-hydroxyethoxy]phenyl)benzofuran-2-one], 5,7-di-tert-butyl-3-(4-ethoxyphenyl)benzofuran-2-one, 3-(4-acetoxy-3,5-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(3,5-dimethyl-4-pivaloyloxyphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(3,4-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one, 3-(2,3-dimethylphenyl)-5,7-di-tert-butylbenzofuran-2-one.

The weight ratio of the total amount of components (A) and (B) to the total amount of the conventional additives can be, for example, 100:1 to 1:100 or 10:1 to 1:10.
The examples below illustrate the invention in greater detail. All percentages and parts are by weight, unless stated otherwise.
Light Stabilizers Used in the Following Examples 1 and 2:
TINUVIN 622®




Mixture (A-2):

Mixture of the compounds (A-2-a) and (A-2-b) in a weight ratio of 4:1




Compound (B-1-a-1):





TINUVIN 770®:





TINUVIN 765®:





TINUVIN 123®:





TINUVIN 144®:





ADK STAB LA 52 (RIM):





ADK STAB LA 57®:





ADK STAB LA 62®:





in which two of the radicals E7 are —COO—C13H27 and

two of the radicals E7 are





ADK STAB LA 67®:





in which two of the radicals E7 are —COO—C13H27 and

two of the radicals E7 are





HOSTAVIN N 20®:





SANDUVOR 3050®:





HOSTAVIN N 24®:





UVINUL 4049H®.





Compound (B-6-a-1):





Compound (B-6-a-2):





SANDUVOR PR 31®:





GOODRITE UV 3034®:





GOODRITE UV 3150®:





Compound (B-10-a-1):





Compound (B-7-1):





in which E19, E20 and E21 are the group







EXAMPLE 1
Light Stabilization of Polypropylene Homopolymer Films
100 parts of unstabilized polypropylene powder (melt flow index: 2.4 g/10 minutes at 230° C. and 2160 g) are homogenized at 200° C. for 10 minutes in a Brabender plastograph with 0.05 parts of pentaerythrityl-tetrakis{3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate}, 0.05 parts of tris{2,4-di-tert-butylphenyl}phosphite, 0.1 parts of Ca stearate, 0.25 parts of titanium dioxide (anatase) and the stabilizer system indicated Table 1. The material thus obtained is compression molded in a laboratory press between two aluminum foils for 6 minutes at 260° C. to a 0.5 mm thick film which is cooled immediately to room temperature in a water-cooled press. Samples of 60 mm×25 mm are cut out of these 0.5 mm films and are exposed in a WEATHER-OMETER Ci 65 (black panel temperature 63±2° C., without waterspraying).
Periodically, these samples are removed from the exposure apparatus and their carbonyl content is measured with an infrared spectrophotometer.
The exposure time (T0.1) corresponding to the formation of a carbonyl absorbance of 0.1 is a measure for the efficiency of the light stabilizer system. The values obtained are summarized in Table 1. High T0.1 values are desired.









TABLE 1







T0.1 in hours




Light stabilizer




system in




combination




with TINUVIN




622 (RTM)



T0.1 in hours
The amount of



The amount of the
the light



light stabilizers
stabilizers used



used is 0.075%
is 0.05%


Light stabilizer system
each*).
each*).

















Without
185
—


TINUVIN 770 (RTM) + TINUVIN 765 (RTM)
1780
3095


TINUVIN 770 (RTM) + TINUVIN 144 (RTM)
1990
2815


TINUVIN 770 (RTM) + TINUVIN 123 (RTM)
1780
2650


TINUVIN 770 (RTM) + HOSTAVIN N 20 (RTM)
2760
3205


TINUVIN 770 (RTM) + ADK STAB LA 57 (RTM)
2245
3045


TINUVIN 770 (RTM) + GOODRITE UV 3034 (RTM)
2440
3570


TINUVIN 770 (RTM) + GOODRITE UV 3150 (RTM)
2715
3230


TINUVIN 770 (RTM) + Compound (B-6-a-1)
1930
3095


TINUVIN 770 (RTM) + Compound (B-6-a-2)
2000
3400


TINUVIN 770 (RTM) + Compound (B-10-a-1)
3510
3940


TINUVIN 770 (RTM) + Compound (B-1-a-1)
1715
3520


TINUVIN 770 (RTM) + SANDUVOR 3050 (RTM)
1630
3040


TINUVIN 770 (RTM) + SANDUVOR PR-31 (RTM)
1885
2730


HOSTAVIN N 20 (RTM) + ADK STAB LA 57 (RTM)
2485
2765


HOSTAVIN N 20 (RTM) + Compound (B-6-a-1)
2625
3010


HOSTAVIN N 20 (RTM) + UVINUL 4049 H (RTM)
2655
3245


HOSTAVIN N 20 (RTM) + Compound (B-1-a-1)
2510
3055


HOSTAVIN N 20 (RTM) + SANDUVOR PR-31 (RTM)
2120
3140


ADK STAB LA 57 (RTM) + TINUVIN 765 (RTM)
2290
2705


ADK STAB LA 57 (RTM) + GOODRITE UV 3150 (RTM)
2305
2930


ADK STAB LA 57 (RTM) + Compound (B-6-a-2)
2255
2745


ADK STAB LA 57 (RTM) + UVINUL 4049 H (RTM)
2400
2735


ADK STAB LA 57 (RTM) + SANDUVOR PR-31 (RTM)
1670
2655


GOODRITE UV 3150 (RTM) + Compound (B-6-a-1)
2390
3040


GOODRITE UV 3150 (RTM) + Compound (B-6-a-2)
2155
2670


GOODRITE UV 3150 (RTM) + SANDUVOR PR-31 (RTM)
2075
2840


Compound (B-6-a-1) + TINUVIN 765 (RTM)
2230
3010


Compound (B-6-a-1) + Compound (B-6-a-2)
2235
2980


Compound (B-6-a-1) + UVINUL 4049 H (RTM)
2465
3235


Compound (B-6-a-1) + Compound (B-1-a-1)
2225
2775


Compound (B-10-a-1) + UVINUL 4049 H (RTM)
3430
4055


Compound (B-10-a-1) + SANDUVOR PR-31 (RTM)
2710
3255


Compound (B-1-a-1) + TINUVIN 765 (RTM)
2365
3060


Compound (B-1-a-1) + UVINUL 4049 H (RTM)
2475
3205


Compound (B-1-a-1) + SANDUVOR PR-31 (RTM)
1845
2550


Compound (B-1-a-1) + Compound (B-6-a-2)
2240
2650





*)The overall concentration of the light stabilizers is 0.15%.






EXAMPLE 2
Light Stabilization of Polypropylene Homopolymer Films
100 parts of unstabilized polypropylene powder (melt flow index: 3.8 g/10 minutes at 230° C. and 2160 g) are homogenized at 200° C. for 10 minutes in a Brabender plastograph with 0.05 parts of pentaerythrityl {tetrakis-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate}, 0.05 parts of tris{2,4-di-tert-butylphenyl)phosphite}, 0.1 parts of Ca stearate, 0.25 parts of titanium dioxide (anatase) and the stabilizer system indicated in Tables 2A to 2H. The material thus obtained is compression molded in a laboratory press between two aluminum foils for 6 minutes at 260° C. to a 0.5 mm thick film which is cooled immediately to room temperature in a water-cooled press. Samples of 60 mm×25 mm are cut out of these 0.5 mm films and are exposed in a WEATHER-OMETER Ci 65 (black panel temperature 63±2° C., without waterspraying).
Periodically, these samples are removed from the exposure apparatus and their carbonyl content is measured with an infrared spectrophotometer.
The exposure time (T0.1) corresponding to the formation of a carbonyl absorbance of 0.1 is a measure for the efficiency of the light stabilizer system. The values obtained are summarized in the following tables. High T0.1 values are desired.











TABLE 2A








T0.1 in hours





T0.1 in hours
Light stabilizer
T0.1 in hours




Light stabilizer
system in
Light stabilizer




system in
combination
system in




combination
with TINUVIN
combination




with TINUVIN
622 (RTM)
with TINUVIN




622 (RTM)
The amount of
622 (RTM)




The amount of
the stabilizers
The amount of




the stabilizers
of the light
the stabilizers




of the light
stabilizer
of the light



T0.1 in hours
stabilizer
system is
stabilizer



The amount of
system is 0.05%
0.075% each
system is 0.09%



the light
each and the
and the
each and



stabilizers
amount of
amount of
the amount of



used is 0.1%
TINUVIN 622
TINUVIN 622
TINUVIN 622


Light stabilizer system
each*).
(RTM) is 0.10%*).
(RTM) is 0.05%*).
(RTM) is 0.02%*).*



















Without
300





TINUVIN 770 (RTM) +
4635
7530
7585
6235


TINUVIN 144 (RTM)


TINUVIN 770 (RTM) +
4935
7940
7170
7130


TINUVIN 123 (RTM)


TINUVIN 770 (RTM) +
5105
7455
7030
6890


HOSTAVIN N 24 (RTM)


TINUVIN 770 (RTM) +
6710
6945
7865
8010


ADK STAB LA 52 (RTM)


TINUVIN 770 (RTM) +
5450
7225
7225
7280


ADK STAB LA 57 (RTM)


TINUVIN 770 (RTM) +
5915
6700
7190
7025


ADK STAB LA 67 (RTM)


TINUVIN 770 (RTM) +
6925
>8340
>8340
7360


GOODRITE UV 3034 (RTM)


TINUVIN 770 (RTM) +
6325
7965
7625
7025


GOODRITE UV 3150 (RTM)


TINUVIN 770 (RTM) +
6040
7400
7540
7025


Compound (B-1-a-1)


TINUVIN 770 (RTM) +
5070
7005
6990
5735


SANDUVOR 3050 (RTM)


TINUVIN 770 (RTM) +
5745
7470
6765
6705


SANDUVOR PR-31 (RTM)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2B







T0.1 in hours




Light stabilizer system in




combination with Mixture (A-2)



T0.1 in hours
The amount of the stabilizers of



The amount of the
the light stabilizer system is



light stabilizers used
0.075% each and the amount


Light stabilizer system
is 0.1% each*).
of Mixture (A-2) is 0.05%*).

















Without
300
—


TINUVIN 770 (RTM) +
4635
6025


TINUVIN 144 (RTM)


TINUVIN 770 (RTM) +
4935
6080


TINUVIN 123 (RTM)


TINUVIN 770 (RTM) +
5105
6005


HOSTAVIN N 24 (RTM)


TINUVIN 770 (RTM) +
5450
6800


ADK STAB LA 57 (RTM)


TINUVIN 770 (RTM) +
6925
7735


GOODRITE UV 3034 (RTM)


TINUVIN 770 (RTM) +
6530
7335


Compound (B-6-a-2)


TINUVIN 770 (RTM) +
6040
6905


Compound (B-1-a-1)


TINUVIN 770 (RTM) +
5070
>6495


SANDUVOR 3050 (RTM)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2C







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075% each



light stabilizers used
and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
315
—


TINUVIN 770 (RTM) +
4815
>7260


TINUVIN 765 (RTM)


TINUVIN 770 (RTM) +
5695
7145


TINUVIN 144 (RTM)


TINUVIN 770 (RTM) +
4670
7080


TINUVIN 123 (RTM)


TINUVIN 770 (RTM) +
5390
6710


HOSTAVIN N 24 (RTM)


TINUVIN 770 (RTM) +
6655
>7260


ADK STAB LA 52 (RTM)


TINUVIN 770 (RTM) +
5040
6760


ADK STAB LA 62 (RTM)


TINUVIN 770 (RTM) +
5010
6205


ADK STAB LA 67 (RTM)


TINUVIN 770 (RTM) +
5825
>7260


Compound (B-10-a-1)


TINUVIN 770 (RTM) +
6125
7215


Compound (B-1-a-1)


TINUVIN 770 (RTM) +
5690
>7260


SANDUVOR 3050 (RTM)


TINUVIN 770 (RTM) +
5100
6475


SANDUVOR PR-31 (RTM)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2D







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075% each



light stabilizers used
and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
315
—


TINUVIN 765 (RTM) +
4930
7180


TINUVIN 144 (RTM)


TINUVIN 765 (RTM) +
4640
>7260


TINUVIN 123 (RTM)


TINUVIN 765 (RTM) +
6580
>7260


HOSTAVIN N 20 (RTM)


TINUVIN 765 (RTM) +
5325
7040


HOSTAVIN N 24 (RTM)


TINUVIN 765 (RTM) +
5605
>7260


ADK STAB LA 52 (RTM)


TINUVIN 765 (RTM) +
5360
6905


ADK STAB LA 57 (RTM)


TINUVIN 765 (RTM) +
4620
>7260


ADK STAB LA 62 (RTM)


TINUVIN 765 (RTM) +
4840
6625


ADK STAB LA 67 (RTM)


TINUVIN 765 (RTM) +
6550
>7260


GOODRITE UV 3034 (RTM)


TINUVIN 765 (RTM) +
5715
>7260


GOODRITE UV 3150 (RTM)


TINUVIN 765 (RTM) +
5105
>7260


Compound (B-6-a-1)


TINUVIN 765 (RTM) +
6145
>7260


Compound (B-1-a-1)


TINUVIN 765 (RTM) +
5425
>7260


SANDUVOR 3050 (RTM)


TINUVIN 765 (RTM) +
4920
6675


SANDUVOR PR-31 (RTM)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2E







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075%



light stabilizers used
each and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
330



TINUVIN 144 (RTM) +
3185
5765


TINUVIN 123 (RTM)


TINUVIN 144 (RTM) +
4295
6150


HOSTAVIN N 20 (RTM)


TINUVIN 144 (RTM) +
3725
5720


HOSTAVIN N 24 (RTM)


TINUVIN 144 (RTM) +
4195
5635


ADK STAB LA 52 (RTM)


TINUVIN 144 (RTM) +
4870
6350


ADK STAB LA 57 (RTM)


TINUVIN 144 (RTM) +
2815
5695


ADK STAB LA 62 (RTM)


TINUVIN 144 (RTM) +
3910
4940


ADK STAB LA 67 (RTM)


TINUVIN 144 (RTM) +
4185
6115


GOODRITE UV 3034 (RTM)


TINUVIN 144 (RTM) +
4290
5725


GOODRITE UV 3150 (RTM)


TINUVIN 144 (RTM) +
5515
6565


Compound (B-6-a-1)


TINUVIN 144 (RTM) +
5100
6810


Compound (B-6-a-2)


TINUVIN 144 (RTM) +
5380
6585


Compound (B-10-a-1)


TINUVIN 144 (RTM) +
5470
6305


Compound (B-1-a-1)


TINUVIN 144 (RTM) +
4030
5200


SANDUVOR 3050 (RTM)


TINUVIN 144 (RTM) +
3105
5890


SANDUVOR PR-31 (RTM)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2F







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075% each



light stabilizers used
and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
330



TINUVIN 123 (RTM) +
4455
5715


HOSTAVIN N 20 (RTM)


TINUVIN 123 (RTM) +
3490
5265


HOSTAVIN N 24 (RTM)


TINUVIN 123 (RTM) +
4620
5610


ADK STAB LA 52 (RTM)


TINUVIN 123 (RTM) +
4275
5670


ADK STAB LA 57 (RTM)


TINUVIN 123 (RTM) +
3380
5185


ADK STAB LA 62 (RTM)


TINUVIN 123 (RTM) +
3470
5355


ADK STAB LA 67 (RTM)


TINUVIN 123 (RTM) +
4520
>6280


GOODRITE UV 3034 (RTM)


TINUVIN 123 (RTM) +
4260
5635


GOODRITE UV 3150 (RTM)


TINUVIN 123 (RTM) +
4760
6145


Compound (B-6-a-1)


TINUVIN 123 (RTM) +
5115
6365


Compound (B-6-a-2)


TINUVIN 123 (RTM) +
5785
6700


Compound (B-10-a-1)


TINUVIN 123 (RTM) +
4345
6115


Compound (B-1-a-1)


TINUVIN 123 (RTM) +
3650
5040


SANDUVOR 3050 (RTM)


TINUVIN 123 (RTM) +
3655
5390


SANDUVOR PR-31 (RTM)


TINUVIN 123 (RTM) +
4305
5205


Compound (B-7-1)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2G







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075% each



light stabilizers used
and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
325



HOSTAVIN N 20 (RTM) +
3695
4565


HOSTAVIN N 24 (RTM)


HOSTAVIN N 20 (RTM) +
4375
5525


ADK STAB LA 52 (RTM)


HOSTAVIN N 20 (RTM) +
4485
5535


ADK STAB LA 57 (RTM)


HOSTAVIN N 20 (RTM) +
3810
5315


ADK STAB LA 62 (RTM)


HOSTAVIN N 20 (RTM) +
3655
5045


ADK STAB LA 67 (RTM)


HOSTAVIN N 20 (RTM) +
5005
5610


GOODRITE UV 3034 (RTM)


HOSTAVIN N 20 (RTM) +
3950
5050


GOODRITE UV 3150 (RTM)


HOSTAVIN N 20 (RTM) +
5025
>5890


Compound (B-6-a-1)


HOSTAVIN N 20 (RTM) +
5465
>5890


Compound (B-6-a-2)


HOSTAVIN N 20 (RTM) +
5405
>5890


Compound (B-10-a-1)


HOSTAVIN N 20 (RTM) +
5410
>5890


Compound (B-1-a-1)


HOSTAVIN N 20 (RTM) +
3985
5090


SANDUVOR 3050 (RTM)


HOSTAVIN N 20 (RTM) +
4085
5255


SANDUVOR PR-31 (RTM)


HOSTAVIN N 20 (RTM) +
4200
5220


Compound (B-7-1)





*)The overall concentration of the light stabilizers is 0.20%.















TABLE 2H







T0.1 in hours




Light stabilizer system in combination




with TINUVIN 622 (RTM)



T0.1 in hours
The amount of the stabilizers of the



The amount of the
light stabilizer system is 0.075% each



light stabilizers used
and the amount of TINUVIN 622


Light stabilizer system
is 0.1% each*).
(RTM) is 0.05%*).

















Without
325



ADK STAB LA 57 (RTM) +
4035
5020


HOSTAVIN N 24 (RTM)


ADK STAB LA 57 (RTM) +
3855
4985


ADK STAB LA 52 (RTM)


ADK STAB LA 57 (RTM) +
4320
4890


GOODRITE UV 3150 (RTM)


ADK STAB LA 57 (RTM) +
3970
4430


SANDUVOR PR-31 (RTM)


ADK STAB LA 57 (RTM) +
3765
4475


Compound (B-7-1)





*)The overall concentration of the light stabilizers is 0.20%.

## Claims

1. A stabilizer mixture containing the components (A) and (B) wherein
component (A) is a compound of the formula (A-1-a), (A-2-a) or (A-2-b);




wherein n1 is a number from 2 to 20;




wherein n2 and n2* are a number from 2 to 20;
and
component (B) is formed by two different compounds selected from the group consisting of compounds of the formulae (B-1-a), (B-1-b), (B-1-c), (B-1-d), (B-3-a), (B-3-b), (B-8-a) and (B-10-a);




wherein E1 is hydrogen, C1-C8alkyl, O−, —OH, —CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl;




wherein E12 has one of the meanings of E1;




wherein E23 has one of the meanings of E1,




wherein E29 has one of the meanings of E1.

2. A stabilizer mixture according to claim 1 wherein E1, E12, E23, and E29 are hydrogen, C1-C4alkyl, C1-C10alkoxy, cyclohexyloxy, allyl, benzyl or acetyl.

3. A stabilizer mixture according to claim 1 wherein E1, E12, E23 and E29 are hydrogen or methyl and E1 additionally is C1-C8alkoxy.

4. A stabilizer mixture according to claim 1 wherein one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen.

5. A stabilizer mixture according to claim 1 wherein
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n2 and n2* are a number from 2 to 20; and
one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen.

6. A stabilizer mixture according to claim 1 wherein component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20 or a compound of the formula (A-2-a) or (A-2-b) wherein n2 and n2* are a number from 2 to 20;
one of the two different compounds forming component (B) is a compound of the formula (B-1-b) with E1 being hydrogen; and
the other of the two different compounds forming component (B) is a compound of the formula (B-1-a) with E1 being hydrogen, (B-1-b) with E1 being methyl, (B-1-d) with E1 being hydrogen or methyl, (B-3-a) with E12 being hydrogen, (B-3-b) with E12 being hydrogen or (B-8-a) with E23 being methyl.

7. A stabilizer mixture according to claim 1 wherein
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E1 is hydrogen, and component (C) is a compound of the formula (B-1-b) wherein E1 is octyloxy; or
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E1 is hydrogen, and component (C) is a compound of the formula (B-3-a) wherein E12 is hydrogen; or
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E1 is hydrogen, and component (C) is a compound of the formula (B-1-d) wherein E1 is hydrogen; or
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E1 is hydrogen, and component (C) is a compound of the formula (B-1-a) wherein E1 is hydrogen; or
component (A) is a compound of the formula (A-1-a) with n1 being a number from 2 to 20, component (B) is a compound of the formula (B-1-b) wherein E1 is methyl, and
component (C) is a compound of the formula (B-1-d) wherein E1 is methyl.

8. A composition comprising an organic material subject to degradation induced by light, heat or oxidation and a stabilizer mixture according to claim 1.

9. A composition according to claim 8 wherein the organic material is a synthetic polymer.

10. A composition according to claim 8 wherein the organic material is a polyolefin.

11. A composition according to claim 8 wherein the organic material is polyethylene, polypropylene, a polyethylene copolymer or a polypropylene copolymer.

12. A method for stabilizing an organic material against degradation induced by light, heat or oxidation, which comprises incorporating into the organic material a stabilizer mixture according to claim 1.