NOVEL LIGHT STABILIZERS FOR POLYMERS

Abstract: Compounds of the formula wherein R represents C₃-C₆ alkenyloxy, C₃-C₆ alkenylamino, or di(C₃-C₆) alkenylamino; R¹ represents C₁-C₈ alkyl, C₁-C₈ alkoxy, halo, C₁-C₈ alkylthio, C₃-C₆ alkenyloxy, amino, C₃-C₆ alkenylamino, di (C₃-C₆) alkenylamino, the groups wherein R², R³, R⁴, R⁵, and R⁶ are as defined below, C₁-C₁₈ alkylamino, C₁-C₁₈ dialkylamino, morpholino, pyrrolidyl, piperidino, a substituted C₁-C₁₈ alkylamino, or a substituted C₁-C₁₈ dialkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, the groups wherein R² represents hydrogen, C₁-C₈ alkyl, or benzyl; R³ and R⁴ independently represent C₁-C₈ alkyl, benzyl, or phenethyl, or together with the carbon to which they are attached form a C₅-C₁₀ cycloalkyl; and R⁵ represents hydrogen, C₂-C₃ hydroxyalkyl, C₁-C₈ alkyl, hydroxyl, or oxyl; R⁶ represents hydrogen, C₁-C₈ or wherein R², R³, R⁴, and R⁵ are as previously defined; wherein R⁶ is as previously defined. and polymers thereof are disclosed as light stabilizers for polymers.

Description: NOVEL LIGHT STABILIZERS FOR POLYMERS This invention relates to certain novel compounds and polymers thereof and to their use as light stabilizers for polymers. More particularly, this invention relates to novel comnounds of. the formula (I) EMI1.1 wherein R represents C3-C6 alkenyloxy, C3-C6 alkenylamino, or di(C3-C6) alkenylamino; R1 represents Cl-Cg alkyl, Cl-Cg alkoxy, halo, C1-Cg alkylthio, C3-C6 alkenyloxy, amino, C3 C alkenylamino, di(C3-C6)-alkenylamino. the groups EMI1.2 wherein R2, R3, R4, R5, and R6 are as defined below, C1-C18 alkylamino, Cl-Clg dialkylamino, morpholino, pyrrolidyl, piperidino, a substituted Cl-Cl8 alkylamino, or a substituted C1-C18 dialkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, the groups EMI2.1 wherein R2 represents hydrogen, Cl-Cg alkyl, or benzyl; R3 and R4 independently represent C1-Cg alkyl, benzyl, or phenethyl, or together with the carbon to which they are attached form a C5-ClQ cycloalkyl; and R5 represents hydrogen, C2-C3 hydroxyalkyl, Cl-Cg alkyl, hydroxyl, or oxyl; R6 represents hydrogen, Cl-Cg alkyl, or. EMI2.2 wherein R2, R3, R4, and R5 are as previously defined; X is oxy, or EMI2.3 wherein R6 is as previously defined. The invention further relates to polymeric compositions obtained by the polymerization, or copolymerization of a monomer, or mixture of monomers represented by formula I, above. The invention also relates to the use of such compounds and/or polymeric compositions for stabilizing polymers, particularly polyolefins, against degradation by ultraviolet radiation, and to the stabilized compositions. The preferred compounds of formula (I) are those wherein R1 is EMI2.4 The especially preferred compound is 2-diallyl amino-4 ,6-bis[ (2,2,6 ,6-tetramethyl-piperidinyl)amino]l ,3 ,5- triazine. French Patent 1,507,062 discloses a methyl-l-piperazinyl-4,6-bis(allyloxy)-l,3,5-triazine. U. S. 3,925,376 discloses various highly alkylated piperidinyl derivatives of 1,3,5-triazine as stabilizers for polymers while U.S. 2,712,004 discloses polymerizing allyl melamines. It is well-known that sunlight and other sources of ultraviolet radiation cause degradation of polymers as evidenced by embrittlement or yellowing of plastic articles made therefrom. It is also well-known that this degradation can be inhibited by use of ultraviolet light stabilizers incorporated in or on such articles. Various additives, used alone or in combinations, have been suggested to inhibit such light degradation in order to prolong the useful lives of articles made from polymers. Since none has been found to be completely satisfactory, research continues in order to find compounds, or combinations of compounds, which will be more satisfactory. The present invention arose out of such research and resulted in the discovery of novel compounds and polymers which stabilize polymers against degradation by ultraviolet light. The stabilizers of the present invention offer the following advantages: (1) excellent light-stabilizing activity, (2) excellent compatibility with resins, (3) low volatility, (4) low extractability from polymers by laundering or dry cleaning, and (5) excellent oven-aging stability. The compounds of formula (I) may be prepared by reacting an appropriately substituted cbloro-l ,3,5-tri- azine of formula (II) EMI4.1 wherein R and R1 are as previously defined, with a compound of formula (III), or (IV), EMI4.2 wherein R2, R3, R4, R5, , and R6 are as previously defined, by methods well-known in the art. Illustrative examples of compounds of formula (I) include the following: 2-allylamino-4-amino-6- (I -hydroxy-2 ,2 ,6,6- teramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-allylamino-4-methylamino-6-(2,2,6,6 tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-dial lylamino-4-t-octylamino-6- (2,2,6,6 - tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-allyloxy-4-t-octylamino-6-(2,2,6,6 tetramethyl-4-piperidinyl)oxy-1,3,5 triazine, 2-(3-butenyl)amino-4-methoxy-6-(1,2,2,6,6 pentamethyl-4-piperidinyl)amino-1,3,5 triazine, 2-(5-hexenyl)amino-4-n-butoxy-6-(2,6 di-n-butyl-2,6-dimethyl-4-piperidinyl) amino-1,3,5-triazine, 2-allylamino-4-t-octyl-6-(2,2,6,6-tetra ethyl-4-piperidinyl)oxy-1,3,5-triazine, 2-diallylamino-4-methylthio--6-(1-oxyl -2,2,6,6-tetramethyl-4-piperidinyl) amino-1,3,5-triazine, 2-diallylamino-4,6-bis[(2,2,6,6,-tetramethyl-4-piperidinyl)amino]-1,3,5 triazine, 2,4-bis(allyloxy)-6-[(1-(2-hydroxyethyl) -2,2,6,6-tetramethyl-4-piperidinyl) amino]-1,3,5-triazine, 2-allylamino-4-diethylamino-6-(-2-benzyl -2,6,6-trimethyl-4-piperidinyl)amino 1,3,5-triazine, 2,4-allylamino-6-(2-n-hexyl-2,6,6-tri- methyl-4-piperidinyl)amino-1,3,5 triazine, 2-allyloxy-4-didodecylamino-6-(2,2,6,6- tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-allyloxy-4-diallylamino-6-(2,2,6,6- tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-methallylamino-4-methyl-6-(2,2,6,6- tetramethyl-4-piperidinyl)oxy-1,3,5 triazine, 2-allylamino-4-morpholino-6-(2,2,6,6 tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-allyloxy-4-piperidino-6-(2,2,3,6,6- pentamethyl-4-piperidinyl)amino-1,3,5 triazine, 2-allylamino-4-(2-hydroxyethyl)amino 6-(2,2,6,6-tetramethyl-4-piperidinyl)- amino-i ,3,5-triazine, 2-diallylamino-4-methoxy-6-(2,2,6,6 tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2,4-bis(diallylamino)-6-(2,2,6,6-tetra- methyl-4-piperidinyl)amino-1,3,5 triazine, 2-diallylamino-4-octylamino-6-(2,2,6,6 tetramethyl-4-piperidinyl)amino-1,3,5- triazine, 2-diallylamino-4-methoxy-6-(7-azadispiro [5.1.5.3]hexadecan-15-y1)amino-1,3,5- triazine, 2-allylamino-4-(2-cyanoethyl)amino-6 (2,2,6,6-tetramethyl-4-piperidinyl)- amino-1,3,5-triazine, <RTI ID=6.4> 2-allyloxy-4- (3-carbethoxypropyl) amino- -6-(2,2,6,6-tetramethyl-4-piperidinyl) amino-l ,3 ,5-triazine, 2-methallyloxy-4-(6-aminohexyl)amino-6 (2,2,6,6-tetramethyl-4-piperidinyl)amino 1,3,5-triazine, 2-diallylamino-4-chloro-6-(2 ,2 ,6 ,6-tetra methyl-4-piperidinyl)amino-1,3,5-triazin 2-diallylamino-4-allyloxy-6 -methyl (2,2,6,6- tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-diallylamino-4-t-octylamino-6-bis(2,2, 6,6-tetramethyl-4-piperidinyl)amino-1,3,5 triazine, 2-diallylamino-4,6-tris(2,2,6,6-tetramethyl 4-piperidinyl)amino-1,3,5-triazine, and 2-diallylamino-4,6-tetrakis(2,2,6,6-tetra methyl-4-piperidinyl)amino-1,3,5-triazine, and the like. In preparing the polymers of the present invention, a monomer of formula (I), or a mixture of a monomer of formula (I) and a comonomer, is polymerized employing an effective amount of a polymerization catalyst. Suitable polymerization catalysts include 2,2'-azobisisobutyronitrile, di-(t-butyl)- peroxide, dilauryl peroxide, lauroyl peroxide, benzoyl peroxide, acetyl peroxide, t-butyl hydrogen peroxide, ammonium persulfate, potassium persulfate, and the like. The preferred catalyst is 2,2'-azobisisobutyronitrile. The monomer of formula (I) may be homopolymer ized, or copolymerized by utilizing a copolymerizable comonomer, in emulsion or solution by conventional methods. Suitable comonomers are disclosed by Thomas in U.S. Patent 2,712,004. The compounds and polymers of this invention are useful as light stabilizers for thermoplastic substrates such as polyolefins, polyesters, polyethers, polyurethanes, polystyrenes, high-impact polystyrenes, and the like. Preferably, the thermoplastic substrate is a polyolefin. Other organic materials susceptible to degradation by the effects of light, the properties of which are improved by the incorporation therein of a compound of this invention, include natural and synthetic rubbers; the latter include, for example, homo-, co- and terpolymers of acrylonitrile, butadiene and styrene, and blends thereof. The compounds of formula (I) and the polymers thereof are particularly useful in polyolefins, such as polyethylene, polypropylene, polybutylene, and the like, and copolymers thereof. Generally, the compositions comprise a polymer containing from about 0.1Z to about 5% by weight of the compound of formula (I), or polymer thereof, based on the weight of the polymeric substrate. Preferably, the composition comprises a polyolefin containing from about 0.2% to about 2% by weight of the compound of formula (I), or polymer thereof, based on the weight of the polyolefin substrate. Optionally, the compositions may contain other additives, especially additives useful in polyolefins, such as antioxidants, supplemental light stabilizers, plasticizers, flame retardants, antistatic and antislipping agents, fillers, dyes, pigments, and the like. Suitable antioxidants include the a of the hindered phenol type, such as 2,6-di-t-butyl-p-cresol; 4,4'bis(2,6-di-t-butylphenol); 4,4'-bis(2,6-diisopropylphenol); 2,4,6-tri-t-butylphenol; 2,2'-thiobis(4-methyl6-t-butylphenol); octadecyl 2(3' ,5 '-di-t-butyl-4 'hydroxy- phenyl)propionate, etc; esters of thiodipropionic acid, such as dilauryl thiodipropionate and distearyl thiodipropionate, etc; hydrocarbyl phosphites, such as triphenyl phosphite, trinonyl phosphite, diisodecyl pentaerythrityl diphosphite, diphenyldecyl phosphite, etc; and combinations thereof. Suitable supplemental light stabilizers include those of the benzotriazole class, such as 2-(2'-hydroxy-5t-octylphenyl)benzotriazole; 2-(2'-hydroxy-3'-5'-di-tbutylphenyl)-5-chlorobenzotriazole; those of the hydroxybenzophenone type, such as 2-hydroxy-4-methoxybenzophenone; 2-hydroxy-4-octyloxybenzophenone; 2,2 '-dihydroxy- 4,4 '-di-metboxybenzophenone; hindered phenol esters, such as n-hexadecyl 3,5 -d i - t-butyl -4 -hydroxybenzoate, and 2',4'-di-t-butylphenyl 3,5-di-t-butyl-4-hydroxybenzoate; metal complexes, such as nickel complexes of 2,2'- thiobis(4-t-octylphenol); nickel butylamine complex of 2,2'thiobis(4-t-octylphenol); nickel complexes of bis(4-toctylphenyl)sulfone; nickel dibutyl dithiocarbamate; nickel salts of 4-hydroxy-3,5-di-t-butylbenzyl phosphonic acid monoalkyl esters where alkyl is methyl, ethyl, propyl, butyl, etc; nickel complex of 2-hydroxy-4-methylphenyl undecyl ketone oxime, etc. Further illustrative examples of suitable antioxidants and supplemental light stabilizers can be found in U.S. Patent 3,723,427 and in columns 3 and 4 of U.S. Patents 3,488,290 and 3,496,134 and in the other patents mentioned therein. As with the compound of formula (I), and polymers thereof, the additive is advantageously employed within the range from about 0.2% to about 2% by weight, based on the weight of the untreated polymer. The compound of formula (I) and polymers thereof may be incorporated into the polymeric substrate by any of the known techniques for compounding additives with a polymer. For example, the polymer or compound may be compounded by dry lend with the polymer substrate in powder or granular form, followed by milling, Banbury mixing, molding, casting, extruding, swelling, and the like. Alternatively, the additive may be added, as a solution or slurry in a suitable inert solvent, or dispersant, to the polymeric substrate in powder or granular form, the whole mixed intimately in a mixer, and the solvent subsequently removed. As a further possibility, the additive may be added to the polymeric substrate during the preparation of the latter, for instance at the latex stage of polymer production, to provide prestabilized polymer material. The following examples illustrate the present invention. All parts and percentages are by weight unless otherwise indicated. Example 1 Preparation of 2-Diallylamino-4-t-octylamino-6-(2,2,6,6 tetramethyl-4-piperidinyl)amino-l ,3,5-triazine 2-Diallylamino-4-t-octylamino-6-chloro-1,3,5triazine (33.8 grams; 0.1 mole) is slurried in water (100 mls) and 4amino-2,2,6,6-tetramethylpiperidine (15.6 grams; 0.1 mole) is added thereto at room temperature while stirring rapidly. The resulting mixture is heated to 90-100oC and a solution of sodium carbonate (10.6 grams; U.1 mole) is added dropwise over a period of one hour. The mixture is heated at 90-1000C for an additional half hour and cooled to ambient temperature to obtain a white gum (2.5 grams). Analysis of the product showed that it still contained 2.34% by weight of unreacted chlorine. The crude product is dissolved in heptane (100 mls) and treated with 4-amino-2,2,6,6-tetramethylpiperidine (5 grams). To the solution is added 1.5 grams of powdered sodium hydroxide and the reaction mixture is heated at reflux for 18 hours. The hot mixture is filtered through a filter-aid and the filtrate is cooled to precipitate a white crystalline product, which is recovered by filtration and dried, mp 108-1100C. Calculated for C26H47N7: C,68.27%; H,10.28%; N,21.44% Found: C,68.33%; H,1025%; N,21.45% Example 2 Preparation of 2-Diallylamino-4,6-bis[(2,2,6,6-tetramethyl-4-piperidinyl)amino]-1,3,5-triazine 2 - Diallylamino-4,6-dichloro-1,3,5-triazine (49.0 grams; 0.2 mole) in dioxane (75 mls) is added to ice cold water (250 mls), while stirring rapidly, and 4-amino2,2,6,6-tetramethylpiperidine (62.4 grams; 0.4 mole) is added in one portion to the resulting slurry. The resulting mixture is then heated to 90-1000C and a solution of sodium carbonate (42.4 grams; 0.4 mole) in water (150 mls) is added dropwise over a period of 2 hours. The mixture is heated for an additional 0.5 hour at 100 C and cooled to ambient temperature. The supernatant aqueous solution is decanted from the wax-like precipitate and the latter is washed with water and recrystallized twice from acetonitrile. The recrystallizJd product weighs 64 grams and melts at 124 l260C. Calculated for C27H48N8: C,66.94%; H, 9.92%; N,23.145 Found: C,65.19%; H,10.03%; N,23.11% Example 3 Preparation of 2-Diallylamino-4-methoxy-6-(2,2,6,6- tetramethyl-4-piperidinyl)amino-l ,3,5-triazine A mixture of 2-diallylamino-4-methoxy-6-chloro- 1,3,5-triazine (9.0 grams; 0.038 mole), 4-amino-2,2,6,6tetramethylpiperidine (6.0 grams; 0.038 mole), powdered sodium hydroxide (1.5 grams; 0.038 mole), and toluene (100 mls) is refluxed for 24 hours using a trap to separate water therefrom. The reaction mixture is then filtered while hot and the filtrate is evaporated to obtain an orange-colored oil. Acetonitrile (50 mls) is added thereto and the mixture is heated to form a solution which is treated with activated carbon and filtered. The filtrate is cooled to form a precipitate which is filtered and dried to obtain 8.3 grams of product, mp 78-790C. Calculated for ClgH32N60: C,63.33%; H,8.88%; N,23.33% Found: C,63.70%; H,8.84%; N,23.40% Example 4 Preparation of 2,4-bis(Diallylamino)-6-(2,2,6,6-tetra- methyl-4-piperidinyl)amino-1,3,5-triazine A mixture of 2,4-bis(diallylamino)-6-chloro 1,3,5-triazine (20.2 grams; 0.07 mole), 4-amino-2,2,6,6tetramethylpiperidine (10.3 grams; 0.07 mole), powdered sodium hydroxide (2.8 grams; 0.07 mole), and xylene (150 mls) is refluxed for 24 hours using a water separator to remove by-product water. The reaction mixture is then filtered while hot and the filtrate is evaporated to obtain an amber oil which solidifies on standing. The solid is dissolved in hexane (150 mls) and the solution is treated with activated carbon and filtered. The filtrate is then cooled to form a precipitate which is recovered by filtration and dried to obtain 16.5 grams of product, mp 79-810C. Calculated for C24H39N7: C,67.77%; H,9.17%; N,23.05% Found: C,65.89%; H,9.22%; N,23.17% EXAMPLE 5 Preparation of 2-Allyloxy-4-t-octylamino-6-(2,2,6,6tetramethyl-4-piperidinyl)amino-1,3,5-triazine A suspension of 2-allyloxy-4-chloro-5-t-octylamino-1,3,5-triazine (27.68 grams; 0.093 mole), 4-amino2,2,6,6-tetramethylpiperidine (14.5 grams; 0.093 mole) and powdered sodium hydroxide (3.72 grams; 0.093 mole) is heated at reflux for 24 hours, cooled to room temperature, and diluted with water. The resulting precipitate is separated from the two-phase mixture by filtration and recrystallized from toluene to obtain 15.65 grams of a white solid which melts at 155-156 C. Calculated for C23H42N6o C,66.i% ; H,l0.l% ; N,20.l% Found: C,66.19%; H,10.91%; N,20.32% Example 6 Preparation of 2,4-bis(allyloxy)-6-(2,2,6,6-tetramethyl -4-piperidinyl)amino-1,3,5-triazine 2,4-Dichloro-6-(2,2,6,6-tetramethyl-4-piperi- dinyl)amino-1,3,5-triazine hydrochloride (10.0 grams; 0.0294 mole) is added portionwise to a stirred solution of powdered sodium hydroxide (3.55 grams; 0.089 mole) in allyl alcohol (100 mls). The solution is heated at reflux for 70 hours, cooled to room temperature, and heated to distil off 50 mls of allyl alcohol. The residue is poured into ice water (200 mls) and the refluxing mixture is extracted 5 times with ether (100-ml portions). The ethereal extract is dried over-anhydrous sodium sulfate, filtered, and heated to obtain 9.4 grams of crude product. The crude product is applied to a column of silica gel (Silica Gel 60; E. Merck, Darmstadt, W. Germany) and eluted with a mixture of chloroform and methanol (9.1 parts by volume). A middle cut yields 6.65 grams of product, mp 101-1030C. Calculated for C18H29N502: C,62.22Z%; H,8.41%; N,20.16% Found: C,62.26%; H,8.36%; N,19.17% Examples 7-12 Testing in Polypropylene The compounds of Examples 1-6 (0.25 gram) are separately dry blended with a mastermix of 100 grams of unstabilized polypropylene (Pro-fax 6401) and 0.1 gram of-- a processing antioxidant, 2,4,6-tri-t-butylphenol. The blend is milled at 350-3700F for five minutes, and then compression molded at 4000F into a film 4-5 mils thick. The film and a control film, identically prepared without the compound under test, are exposed to a xenon arc in an Atlas Weather-Ometer until they fail. A film is considered as having failed when the carbonyl content of the infrared absorption spectrum increases by 0.10-weight percent, a generally accepted point of film embrittlement. The data in Table I show the number of hours required to increase the carbonyl content by 0.1% by weight for the compounds under test and a control film. TABLE I Example Additive Hours to Failure 7 Product of Example 1 2000 8 Product of Example 2 1900 9 Product of Example 3 1400 10 Product of Example 4 1100 11 Product of Example 5 12 Product of Example 6 None 200 Example 13 Polymer from 2-Diallylamino-4,6-bisl(2,2,6,6-tetramethyl- -4-piperidinyl)amino]-1,3,5-triazine Dry dioxane (20 grams) is purged with nitrogen for 30 minutes and 2-diallylamino-4,6-bis(2,2,6,6 tetrametbyl-4-piperidinylamino)-l,3,5-triazine (12.0 grams) is added thereto. The temperature of the mixture is raised to 700C while nitrogen is passed over the surface of the solution. 2,2'-Azobisisobutyronitrile (0.64 gram) is added to the reaction mixture and the temperature is maintained at 70 C, while stirring and passing nitrogen over the surface, for 21 hours and 20 minutes. At this point, 0.17 gram of additional 2,2'-azobisisobutyronitrile is added to the reaction mixture and heating is continued for an additional 3 hours and 10 minutes. At the end of this time, heating is stopped and the viscous reaction mixture is added to petroleum ether. The resulting precipitate is recovered by filtration and dried in a vacuum oven at 750C to obtain 5.25 grams of polymer, mp 175-2050C, having a number average molecular weight of 1600. Example 14 Polymer from 2-Diallylamino-4-t-octylamino-6-(2,2,6,6- tetramethyl-4-piperidinyl)amino-l ,3 ,5-triazine Dry dioxane (14 grams) is mixed with 2-dial lylamino--4-t-octylamino-6-(2,2,6,6-tetramethyl-4-piperi- dinylamino)-1,3,5-triazine (8.0 grams) and the mixture is heated slightly to form a solution. Nitrogen is passed through the solution for 2 hours while stirring. 2,2' Azobisisobutyronitrile (0.45 gram) is added to the solution and the temperature is increased to 700C while stirring and passing nitrogen over the surface of the solution. The solution is stirred at 700C for 24 hours and then 0.1 gram of 2,2'-azobisisobutyronitrile is added thereto. Heating is continued at 700C for 17 hours and then discontinued. The viscous product is separated from the reaction mixture, dried in a vacuum oven at 800C, ground, and stirred with petroleum ether. The petroleum ether insoluble material is recovered by filtration and dried to obtain 3.3 grams of polymer having a number average molecular weight of 1559. The polymer softens at about 1600C and melts at about 1800C. Example 15 Polymer from 2-Diallylamino-4-methoxy-6-(2 ,2,6 ,6-tetra- methyl-4-piperidinyl)amino-1,3,i-triazine Dry dioxane (15 grams) is purged with nitrogen for 40 minutes. To the purged dioxane are added 2-dial lylamino-4-methoxy-6-(2,2,6 ,6-tetramethyl-4-piperidiny- amino-1,3,5-triazine (11 grams) and 2,2'-azobisisobutyronitrile (0.5 gram), and the nitrogen is passed above the surface of the resulting mixture. The temperature is increased to 650C and the mixture is stirred thereat for 24 hours. At the end of this period, 0.1 gram of 2,2'azobisisobutyronitrile is added to the reaction mixture and the mixture is stirred at 700C for 19 hours. At the end of this time, the reaction mixture is added to petroleum ether and the resulting precipitate is recovered and dried to obtain 5.3 grams of polymer, mp range 1600-1850C, having a number average molecular weight of 1779. Example 16 Polymer from 2,4-bis(Diallylamino)-6-(2,2,6,6-tetramethyl- -4-piperidinyl)amino-1,3,5-triazine Dry dioxane (14 grams) is purged with nitrogen for 1.5 hours, and then 2-diallylamino-4 methoxy-6-(2,2,6,6-tetramethyl-4-piperidinylamino)-l,3,5- triazine (9.2 grams) is added thereto and dissolved by warming slightly. 2,2'-Azobisisobutyronitrile (0.45 gram) is added to the solution and the solution is purged with nitrogen for an additional 15 minutes. At this point, the nitrogen flow is directed over the surface of the reaction mixture and the temperature is raised to 63-640C. Stirring is continued at this temperature for 25 hours, and then an additional 0.1 gram of 2,2'-azobisisobutyronitrile is added to the reaction mixture. Polymerization is continued at 63-640C for another 24 hours and the reaction mix ture is added to petroleum ether. The resulting precipitate is recovered by filtration and dried to obtain 4.67 grams of polymer, mp range 2000-2400C, having a number average molecular weight of 768. Example 17 Polymer from 2 ,4-bis(allyloxy) -6- (2,2,6 ,6-tetramethyl- 4-piperidinyl)amino-1,3,5-triazine A solution of 50% by weight of 2,4-diallyloxy-6 (2,2,6,6-tetramethyl-4-piperidinyl)amino-1,3,5-triazine (10.00 grams) in dioxane is heated at 75-800C under nitrogen for eight hours and azobisisobutyronitrile (0.10 gram) is then added thereto. Heating at 75-800C added thereto. Heating at 75-800C is continued and 0110 gram portions are added after 32 and 46 hours. After 72 hours, the yellow viscous mixture is triturated with hot hexane and filtered to recover a solid. The filter cake is then washed with hot hexane and air dried. The product softens at 1500C; it has a number average molecular weight of 986. Examples 18-22 Testing in Polypropylene The polymers of Examples 13-17 (0.25 gram) are separately dry blended with a mastermix of 100 grams of unstabilized polypropylene (Pro-faxe 6401) and 0.1 gram of a processing antioxidant, 2,4,6-tri-t-butylphenol. The blend is milled at 350-3700F for five minutes, and then compression molded at 4000F into a film 4-5 mils thick. The film and a control film, identically prepared without the compound under test, are exposed to a xenon arc in an Atlas Weather-Ometer until they fail. A film is considered as having failed when the carbonyl content of the infrared absorption spectrum increases by 0.10-weight percent, a generally accepted point of film embrittlement. The data in Table II show the number of hours required to increase the carbonyl content by 0.1% by weight for the compounds under test and a control film. TABLE II Example Additive Hours to Failure 18 Product of Example 13 800 19 Product of Example 14 800 20 Product of Example 15 1400 21 Product of Example 16 500 22 Product of Example 17 None 200

Claims: WHAT IS CLAIMED IS: 1. A compound of the formula (I) EMI19.1 wherein R represents C3-C6 alkenyloxy, C3-C6 alkenylamino, or di(C3-C6) alkenylamino; R1 represents Cl-Cg alkyl, C1-Cg alkoxy, halo, C1-Cg alkylthio, C3 -C6 alkenyloxy, amino, C3 C6 alkenylamino, di (C3 -C6) alkenylamino, the groups EMI19.2 wherein R2, R3, R4, R5, and R6 are as defined below, C1-C18 alkylamino, C1-C18 dialkylamino, morpholino, pyrrolidyl, piperidino, a substituted C1-C18 alkylamino, or a substituted C1-C18 dialkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, the groups EMI19.3 wherein R2 represents hydrogen, Cl-C8 alkyl, or benzyl; R3 and R4 independently represent C1-Cg alkyl, benzyl, or phenethyl, or together with the carbon to which they are attached form a Cg-C10 cycloalkyl; and R5 represents hydrogen, C2-C3 hydroxyalkyl, C1-Cg alkyl, hydroxyl, or oxyl; R6 represents hydrogen, C1-Cg alkyl, or EMI20.1 wherein R2, R3, R4, and R5 are as previously defined: X is oxy, EMI20.2 wherein R6 is as previously defined. 2. The compound of Claim 1 wherein R1 is EMI20.3 3. The compound of Claims 1 or 2 wherein R2 and R5 are hydrogen, and R3 and R4 are methyl. 4. A method of stabilizing a polymer which is normally subject to degradation by ultraviolet radiation which comprises incorporating into said polymer an ultraviolet radiation stabilizingly effective amount of a stabilizer of Claim 1. 5. The method of Claim 4 wherein the polymer is a polyolefin. EMI21.1 wherein R2 represents hydrogen, C1-Cg alkyl, or benzyl; R3 and R4 independently represent Cl-Cg alkyl, benzyl, or phenethyl, or together with the carbon to which they are attached form a Cs-Clo cycloalkyl; and R5 represents hydrogen, C2-C3 hydroxyalkyl, C1-Cg alkyl, hydroxy, or oxyl; R6 represents hydrogen, Cl-Cg alkyl, or EMI21.2 wherein R2. R3,R4. and R5 are as previously defined; X is oxy, or EMI21.3 wherein R6 is as previously defined. 7. The polymer of Claim 6 wherein R1 is EMI21.4 8. The polymer of Claim 6 wherein R1 is EMI22.1 9. A method for stabilizing a polymer which is normally subject to degradation by ultraviolet radiation which comprises incorporating into said polymer an ultraviolet stabilizingly effective amount of a polymer of Claim 6. 10. The method of Claim 9 wherein the polymer is a polyolefin. 6. A polymer prepared by the polymerization of a monomer, represented by formula (I) EMI23.1 wherein R represents C3-C6 alkenyloxy, C3 -C6 alkenylamino, or di(C3-C6 alkenyl)amino; R1 represents Cl-Cg alkyl, C1 C8 alkoxy, halo, C1-Cs alkylthio, C3-C6 alkenyloxy, amino, C3-C6 alkenylamino, di(C3-C6 alkenyl)amino, the groups EMI23.2 wherein R2, R3, R4, R5, and R6 are as defined below, C1- C18 alkylamino, C1-C18 dialkylamino, morpholino, piperidino, pyrrolidyl, a substituted C1-C18 alkylamino, or a substituted C1-C18 dialkylamino, wherein the substituents are selected from amino, cyano, carboxy, alkoxycarbonyl wherein the alkoxy moiety has 1 to 8 carbon atoms, and the groups

Inventors: BRADY, THOMAS EUGENE, LOFFELMAN, FRANK FRED
Applicants: AMERICAN CYANAMID COMPANY
Application year: 1982
Main classification: C07D401
IPC codes: C08F20, C08L101, C08K5, C08F26