A description is given of compositions comprising a chlorine-containing polymer and at least one compound of the general formula I ##STR1## where Y is S or O, and PA1 R.sub.1 and R.sub.2 independently of one another are unsubstituted or C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy- and/or hydroxyl-substituted phenyl, phenyl-C.sub.1 -C.sub.4 -alkyl which is unsubstituted or substituted on the phenyl ring by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.5 -alkoxy and/or hydroxyl, or are C.sub.3 -C.sub.6 -alkenyl, C.sub.5 -C.sub.8 -cycloalkyl, or C.sub.2 -C.sub.10 -alkyl interrupted by at least 1 oxygen atom, or, if R.sub.1 and R.sub.2 are different from one another, one of the two radicals can be C.sub.2 -C.sub.12 -alkyl and the other can be C.sub.2 -C.sub.12 -alkyl or one of the above radicals, or, if R.sub.1 and R.sub.2 are identical, both can also be C.sub.5 -C.sub.12 -alkyl, and, if Y is sulfur, R.sub.1 and R.sub.2 cannot be octyl.

BACKGROUND OF THE INVENTION
 1. Technical Field
 The invention relates to the compositions consisting of chlorine-containing
 polymers and aminouracils of the formula I depicted below for stabilizing
 said polymers, especially PVC.
 2. Prior Art
 PVC can be stabilized by a range of additives. Compounds of lead, of barium
 and of cadmium are particularly suitable for this purpose but are nowadays
 controversial on ecological grounds or because of their heavy metal
 content (cf. "Kunststoffadditive", R. Gachter/H. Muller, Carl Hanser
 Verlag, 3rd ed., 1989, pages 303-311, and "Kunststoff Handbuch PVC",
 volume 2/1, W. Becker/D. Braun, Carl Hanser Verlag, 2nd ed., 1985, pages
 531-538; and also Kirk-Othmer: "Encyclopedia of Chemical Technology", 4th
 ed., 1994, Vol. 12, Heat Stabilizers, pp. 1071-1091). The search therefore
 continues for effective stabilizers and stabilizer combinations which are
 free from lead, barium and cadmium.
 1,3-disubstituted aminouracils have already been described in U.S. Pat.
 Nos. 3,436,362, 4,656,209, 4,352,903 and EP-A-0 768 336 and can be
 prepared by known methods in one (or more) process steps.
 SUMMARY OF THE INVENTION
 It has now been found that the 1,3-disubstituted 6-aminouracils of the
 general formula I
 ##STR2##
 where Y is S or O, and
 R.sub.1 and R.sub.2 independently of one another are unsubstituted or
 C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy- and/or
 hydroxyl-substituted phenyl, phenyl-C.sub.1 -C.sub.4 -alkyl which is
 unsubstituted or substituted on the phenyl ring by C.sub.1 -C.sub.4
 -alkyl, C.sub.1 -C.sub.5 -alkoxy and/or hydroxyl, or are C.sub.3 -C.sub.6
 -alkenyl, C.sub.5 -C.sub.8 -cycloalkyl, or C.sub.2 -C.sub.10 -alkyl
 interrupted by at least 1 oxygen atom, or, if R.sub.1 and R.sub.2 are
 different from one another, one of the two radicals can be C.sub.2
 -C.sub.12 -alkyl and the other can be C.sub.2 -C.sub.12 -alkyl or one of
 the above radicals, or, if R.sub.1 and R.sub.2 are identical, both can
 also be C.sub.5 -C.sub.12 -alkyl, and, if Y is sulfur, R.sub.1 and R.sub.2
 cannot be octyl, are particularly suitable for stabilizing
 chlorine-containing polymers such as PVC, for example.
 For compounds of the formula I, C.sub.1 -C.sub.4 -alkyl is, for example,
 methyl, ethyl, n-propyl, isopropyl, n-, i-, sec- or t-butyl. C.sub.5
 -C.sub.12 -alkyl is, for example, pentyl, hexyl, heptyl, octyl,
 2-ethylhexyl, i-octyl, decyl, nonyl, undecyl or dodecyl. Preference is
 given to n-butyl and octyl.
 C.sub.3 -C.sub.6 -alkenyl is allyl, 1-butenyl, 2-butenyl, 3-butenyl,
 isobutenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 4-pentenyl, 1-hexenyl,
 2-hexenyl, 3-hexenyl, 4-hexenyl, 5-hexenyl and their isomers. Preference
 is given to allyl. C.sub.5 -C.sub.8 -cycloalkyl is, for example,
 cyclopentyl, cyclohexyl, cycloheptyl or cyclooctyl, preferably cyclohexyl.
 C.sub.7 -C.sub.10 -alkylphenyl is, for example, tolyl or mesityl,
 especially tolyl. C.sub.7 -C.sub.10 -phenylalkyl is, for example, benzyl,
 1- or 2-phenylethyl, 3-phenylpropyl, .alpha., .alpha.-dimethylbenzyl or
 2-phenylisopropyl, preferably benzyl and 2-phenethyl, especially benzyl.
 If the aromatic radical is substituted then it is preferably substituted
 by three, two or, in particular, one substituent and the substituents are,
 in particular, hydroxyl, methyl, ethyl, methoxy or ethoxy. If the alkyl
 radicals are interrupted, they necessarily contain at least 2 carbon
 atoms. Examples of --O-- interrupted C.sub.2 -C.sub.10 -alkyl radicals are
 branched or straight-chain radicals such as, for example, methoxymethyl,
 methoxyethyl, methoxypropyl, methoxybutyl, methoxyhexyl, methoxyoctyl,
 ethoxymethyl, ethoxyethyl, ethoxypropyl, ethoxybutyl, ethoxyhexyl,
 ethoxyoctyl, n-propoxymethyl, n-propoxethyl, n-propoxybutyl,
 n-propoxyhexyl, i-propoxymethyl, i-propoxyethyl, i-propoxybutyl,
 i-propoxyhexyl, n-butoxymethyl, n-butoxyethyl, n-butoxybutyl,
 n-butoxyhexyl or t-butoxymethyl, etc. Preference is given, for example, to
 ethoxypropyl. The alkyl chain can also be interrupted by more than one
 --O--. Examples of such radicals are --CH.sub.2 --O--CH.sub.2 --CH.sub.2
 --O--CH.sub.3, --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CH.sub.2
 --O--CH.sub.3, --CH.sub.2 --O--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2
 --O--CH.sub.3, --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2
 --O--CH.sub.2 --CH.sub.3, --CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.2
 --O--CH.sub.2 --CH.sub.2 --O--CH.sub.2 --CH.sub.3, etc. Here too,
 structural isomers are possible.
 Preference is given to compounds of the formula I, in which Y is oxygen and
 to those in which the radicals R.sub.1 and R.sub.2 are identical and, in
 particular, where R.sub.1 and R.sub.2 are both C.sub.8 -C.sub.12 -alkyl.
 Further advantageous compounds are those in which Y is sulfur. Preference
 is also given to compounds of the formula I in which R.sub.1 and R.sub.2
 independently of one another are phenyl, C.sub.1 -C.sub.4 -alkylphenyl,
 benzyl, 2-phenethyl, allyl or C.sub.3 -C.sub.10 -alkyl interrupted by 1 to
 3 oxygen atoms. Preference is likewise given to compounds of the formula I
 in which R.sub.1 and R.sub.2 are C.sub.2 -C.sub.12 -alkyl with the proviso
 that R.sub.1 and R.sub.2 are not the same alkyl radical, and especially
 those where R.sub.1 and R.sub.2 are C.sub.4 -C.sub.8 -alkyl. Very
 particular preference is given to compounds of the formula I in which
 R.sub.1 and R.sub.2 independently of one another are phenyl,
 2-phenylethyl, benzyl or alkyl, or one of the two substituents is C.sub.2
 -C.sub.6 -alkyl and the other is phenyl, 2-phenylethyl, benzyl or alkyl.
 In order to achieve stabilization in the chlorine-containing polymer, the
 compounds of the formula I are to be used in a proportion of judiciously
 from 0.01 to 10% by weight, preferably from 0.05 to 5% by weight and, in
 particular, from 0.1 to 3% by weight.
 It is also possible to employ combinations of compounds of the general
 formula I with other customary additives and stabilizers, for example with
 polyols and disaccharide alcohols and/or perchlorate compounds and/or
 glycidyl compounds and/or zeolite compounds and/or layered lattice
 compounds (hydrotalcites) and also, for example, light stabilizers.
 Examples of such additional components are listed and elucidated below.
 DETAILED DESCRIPTION OF THE INVENTION
 Polyols and Disaccharide Alcohols
 Examples of suitable compounds of this type are: pentaerythritol,
 dipentaerythritol, tripentaerythritol, trimethylolethane,
 bistrimethylolpropane, inositol (cyclitols), polyvinyl alcohol,
 bistrimethylolethane, trimethylolpropane, sorbitol (hexitols), maltitol,
 isomaltitol, cellobiitol, lactitol, lycasine, mannitol, lactose, leucrose,
 tris(hydroxyethyl) isocyanurate, tris(hydroxypropyl)isocyanurate,
 palatinitol, tetramethylolcyclohexanol, tetramethylolcyclopentanol,
 tetramethylolcyclopyranol, xylitol, arabinitol (pentitols), tetritols,
 glycerol, diglycerol, polyglycerol, thiodiglycerol or
 1-O-.alpha.-D-glycopyranosyl-D-mannitol dihydrate. Of these, preference is
 given to the disaccharide alcohols. It is also possible to use polyol
 syrups, such as sorbitol, mannitol and maltitol syrup. The polyols can be
 employed in an amount of, for example, from 0.01 to 20, judiciously from
 0.1 to 20 and, in particular, from 0.1 to 10 parts by weight per 100 parts
 by weight of PVC.
 Perchlorate Compounds
 Examples are those of the formula M(ClO.sub.4).sub.n, in which M is Li, Na,
 K, Mg, Ca, Sr, Ba, Zn, Al, La or Ce. Depending on the valency of M, the
 index n is 1, 2 or 3. The perchlorate salts can be present as solutions or
 can have been complexed with alcohols (polyols, cyclodextrins) or ether
 alcohols or ester alcohols. The ester alcohols also include the polyol
 partial esters. In the case of polyhydric alcohols or polyols, their
 dimers, trimers, oligomers and polymers are also suitable, such as di-,
 tri-, tetra- and polyglycols and also di-, tri- and tetrapentaerythritol
 or polyvinyl alcohol in various degrees of polymerization. Other suitable
 solvents are phosphate esters and also cyclic and acyclic carbonates. In
 this context, the perchlorate salts can be employed in various common
 forms of presentation; for example, as a salt or solution in water or an
 organic solvent as such, or adsorbed on a support material such as PVC, Ca
 silicate, zeolites or hydrotalcites, or bound by chemical reaction into a
 hydrotalcite or into another layered lattice compound. As polyol partial
 ethers, preference is given to glycerol monoethers and glycerol
 monothioethers. Further embodiments are described in EP 0 394 547, EP 0
 457 471 and WO 94/24200. The perchlorates can be employed in an amount of,
 for example, from 0.001 to 5, judiciously from 0.01 to 3, and, with
 particular preference, from 0.01 to 2 parts by weight per 100 parts by
 weight of PVC.
 Glycidyl Compounds
 These contain the glycidyl group
 ##STR3##
 attached directly to carbon, oxygen, nitrogen or sulfur atoms, and in such
 compounds R.sub.1 and R.sub.3 are either both hydrogen and R.sub.2 is
 hydrogen or methyl and n is 0 or R.sub.1 and R.sub.3 together are
 --CH.sub.2 --CH.sub.2 -- or --CH.sub.2 --CH.sub.2 --CH.sub.2 -- and in
 that case R.sub.2 is hydrogen and n is 0 or 1.
 I) Glycidyl esters and .beta.-methylglycidyl esters obtainable by reacting
 a compound having at least one carboxyl group in the molecule with
 epichlorohydrin or glyceroldichlorohydrin or .beta.-methylepichlorohydrin.
 The reaction takes place judiciously in the presence of bases.
 As compounds having at least one carboxyl group in the molecule it is
 possible to use aliphatic carboxylic acids. Examples of these carboxylic
 acids are glutaric, adipic, pimelic, suberic, azelaic and sebacic acid or
 dimerized or trimerized linoleic acid, acrylic and methacrylic acid,
 caproic, caprylic, lauric, myristic, palmitic, stearic and pelargonic
 acid, and also the acids mentioned in connection with the organozinc
 compounds.
 However, it is also possible to employ cycloaliphatic carboxylic acids,
 such as, for example, cyclohexanecarboxylic, tetrahydrophthalic,
 4-methyltetrahydrophthalic, hexahydrophthalic or 4-methylhexahydrophthalic
 acid. Aromatic carboxylic acids can also be used, examples being benzoic,
 phthalic, isophthalic, trimellitic and pyromellitic acid. It is likewise
 possible to make use of carboxyl-terminated adducts of, for example,
 trimellitic acid with polyols, such as glycerol or
 2,2-bis(4-hydroxycyclohexyl)propane. Other epoxide compounds which can be
 used in the context of this invention are given in EP 0 506 617.
 II) Glycidyl ethers or .beta.-methylglycidyl ethers obtainable by reacting
 a compound having at least one free alcoholic hydroxyl group and/or
 phenolic hydroxyl group with an appropriately substituted epichlorohydrin
 under alkaline conditions or in the presence of an acidic catalyst with
 subsequent alkali treatment.
 Ethers of this type are derived, for example, from acyclic alcohols, such
 as ethylene glycol, diethylene glycol and higher poly(oxyethylene)glycols,
 propane-1,2-diol, or poly(oxypropylene)glycols, propane-1,3-diol,
 butane-1,4-diol, poly(oxytetramethylene)glycols, pentane-1,5-diol,
 hexane-1,6-diol, hexane-2,4,6-triol, glycerol, 1,1,1-trimethylolpropane,
 bistrimethylolpropane, pentaerythritol, sorbitol, and from
 polyepichlorohydrins, butanol, amyl alcohol, pentanol, and from
 monofunctional alcohols such as isooctanol, 2-ethylhexanol, isodecanol and
 also C.sub.7 -C.sub.9 -alkanol and C.sub.9 -C.sub.11 -alkanol mixtures.
 They are also derived, however, for example, from cycloaliphatic alcohols,
 such as 1,3- or 1,4-dihydroxycyclohexane, bis(4-hydroxycyclohexyl)methane,
 2,2-bis-(4-hydroxycyclohexyl)propane or
 1,1-bis(hydroxymethyl)cyclohex-3-ene, or they possess aromatic nuclei,
 such as N,N-bis(2-hydroxyethyl)aniline or
 p,p'-bis(2-hydroxyethylamino)diphenylmethane. The epoxide compounds can
 also be derived from mononuclear phenols, such as, for example, from
 phenol, resorcinol or hydroquinone; or, they are based on polynuclear
 phenols, such as, for example, on bis(4-hydroxyphenyl)methane,
 2,2-bis(4-hydroxyphenyl)propane,
 2,2-bis(3,5-dibromo-4-hydroxyphenyl)-propane, on 4,4'-dihydroxydiphenyl
 sulfone or on condensates of phenols with formaldehyde obtained under
 acidic conditions, such as phenol novolaks. Examples of further possible
 terminal epoxides are: glycidyl 1-naphthyl ether, glycidyl 2-phenylphenyl
 ether, 2-biphenylyl glycidyl ether, N-(2,3-epoxypropyl)phthalimide and
 2,3-epoxypropyl 4-methoxyphenyl ether.
 III) N-Glycidyl compounds obtainable by dehydrochlorination of the reaction
 products of epichlorohydrin with amines containing at least one amino
 hydrogen atom. These amines are, for example, aniline, N-methylaniline,
 toluidine, n-butylamine, bis(4-aminophenyl)methane, m-xylylenediamine or
 bis(4-methylaminophenyl)methane, and also N,N,O-triglycidyl-m-aminophenol
 or N,N,O-triglycidyl-p-aminophenol.
 However, the N-glycidyl compounds also include N,N'-di-, N,N',N"-tri- and
 N,N',N",N'"-tetraglycidyl derivatives of cycloalkyleneureas, such as
 ethyleneurea or 1,3-propyleneurea and N,N'-diglycidyl derivatives of
 hydantoins, such as of 5,5-dimethylhydantoin or glycoluril and triglycidyl
 isocyanurate.
 IV) S-Glycidyl compounds such as di-S-glycidyl derivatives derived from
 dithiols, such as ethane-1,2-dithiol or bis(4-mercaptomethylphenyl)ether,
 for example.
 V) Epoxy compounds having a radical of the above formula in which R.sub.1
 and R.sub.3 together are --CH.sub.2 --CH.sub.2 -- and n is 0 are
 bis(2,3-epoxycyclopentyl)ether, 2,3-epoxycyclopentylglycidyl ether or
 1,2-bis(2,3-epoxycyclopentyloxy)ethane. An epoxy resin having a radical of
 the above formula in which R.sub.1 and R.sub.3 together are --CH.sub.2
 --CH.sub.2 -- and n is 1 is, for example,
 (3',4'-epoxy-6'-methylcyclohexyl)methyl
 3,4-epoxy-6-methylcyclohexanecarboxylate.
 Examples of suitable terminal epoxides are:
 a) liquid bisphenol A diglycidyl ethers, such as Araldit.RTM. GY 240,
 Araldit.RTM. GY 250, Araldit.RTM. GY 260, Araldit.RTM. GY 266,
 Araldit.RTM. GY 2600, Araldit.RTM. MY 790;
 b) solid bisphenol A diglycidyl ethers, such as Araldit.RTM. GT 6071,
 Araldit.RTM. GT 7071, Araldit.RTM. GT 7072, Araldit.RTM. GT 6063,
 Araldit.RTM. GT 7203, Araldit.RTM. GT 6064, Araldit.RTM. GT 7304,
 Araldit.RTM. GT 7004, Araldit.RTM. GT 6084, Araldit.RTM. GT 1999,
 Araldit.RTM. GT 7077, Araldit.RTM. GT 6097, Araldit.RTM. GT 7097,
 Araldit.RTM. GT 7008, Araldit.RTM. GT 6099, Araldit.RTM. GT 6608,
 Araldit.RTM. GT 6609, Araldit.RTM. GT 6610;
 c) liquid bisphenol F diglycidyl ethers, such as Araldit.RTM. GY 281,
 Araldit.RTM. PY 302, Araldit.RTM. PY 306;
 d) solid polyglycidyl ethers of tetraphenylethane, such as CG Epoxy
 Resin.RTM. 0163;
 e) solid and liquid polyglycidyl ethers of phenol-formaldehyde novolak,
 such as EPN 1138, EPN 1139, GY 1180, PY 307;
 f) solid and liquid polyglycidyl ethers of o-cresol-formaldehyde novolak,
 such as ECN 1235, ECN 1273, ECN 1280, ECN 1299;
 g) liquid glycidyl ethers of alcohols, such as Shell.RTM. Glycidyl ether
 162, Araldit.RTM. DY 0390, Araldit.RTM. DY 0391;
 h) liquid glycidyl ethers of carboxylic acids, such as Shell.RTM. Cardura E
 terephthalic acid ester, trimellitic acid ester, Araldit.RTM. PY 284;
 i) solid heterocyclic epoxy resins (triglycidyl isocyanurate), such as
 Araldit.RTM. PT 810;
 j) liquid cycloaliphatic epoxy resins such as Araldi.RTM. CY 179;
 k) liquid N,N,O-triglycidyl ethers of p-aminophenol, such as Araldit.RTM.
 MY 0510;
 l) tetraglycidyl-4,4'-methylenebenzamine or
 N,N,N',N'-tetraglycidyidiamino-phenylmethane, such as Araldit.RTM. MY 720,
 Araldit.RTM. MY 721.
 Preference is given to the use of epoxy compounds having two functional
 groups. In principle, however, it is also possible to employ epoxy
 compounds having one, three or more functional groups. Use is made
 predominantly of epoxy compounds, especially diglycidyl compounds, having
 aromatic groups. If desired, it is also possible to employ a mixture of
 different epoxy compounds. Particular preference is given as terminal
 epoxy compounds to diglycidyl ethers based on bisphenols, such as on
 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), bis(4-hydroxyphenyl)methane
 or mixtures of bis(ortho/parahydroxyphenyl)methane (bisphenol F), for
 example. The terminal epoxy compounds can be employed in an amount of
 preferably at least 0.1 part, for example from 0.1 to 50, judiciously from
 1 to 30 and in particular, from 1 to 25 parts by weight, per 100 parts by
 weight of PVC.
 Hydrotalcites
 The chemical composition of these compounds is known to the person skilled
 in the art, for example, from patents DE 3 843 581, U.S. Pat. No.
 4,000,100, EP 0 062 813 and WO 93/20135. Compounds from the series of the
 hydrotalcites can be described by the following general formula
EQU M.sup.2+.sub.1-x M.sup.3+.sub.x (OH).sub.2 (A.sup.b-).sub.x/b.d H.sub.2 O
 where
 M.sup.2+ =one or more metals from the group Mg, Ca, Sr, Zn and Sn,
 M.sup.3+ =Al, or B,
 A.sup.n is an anion having the valency n, b is a number from 1-2,
 0&lt;x&lt;0.5,
 m is a number from 0-20.
 Preferably
 A.sup.n =OH.sup.-, ClO.sub.4.sup.-, HCO.sub.3.sup.-, CH.sub.3 COO.sup.-,
 C.sub.6 H.sub.5 COO.sup.-, CO.sub.3.sup.2-, (CHOHCOO).sub.2.sup.2-,
 (CH.sub.2 COO).sub.2.sup.2-, CH.sub.3 CHOHCOO.sup.-, HPO.sub.3.sup.- or
 HPO.sub.4.sup.2- ;
 Examples of hydrotalcites are
 Al.sub.2 O.sub.3.6MgO.CO.sub.2.12H.sub.2 O (i), Mg.sub.4,5 Al.sub.2
 (OH).sub.13.CO.sub.3.3.5H.sub.2 O (ii), 4MgO.Al.sub.2
 O.sub.3.CO.sub.2.9H.sub.2 O (iii), 4MgO.Al.sub.2 O.sub.3.CO.sub.2.
 6H.sub.2 O, ZnO.3MgO.Al.sub.2 O.sub.3.CO.sub.2.8-9H.sub.2 O and
 ZnO.3MgO.Al.sub.2 O.sub.3.CO.sub.2.5-6H.sub.2 O.
 Very particular preference is given to types i, ii and iii.
 Zeolites (Alkali Metal and Alkaline Earth Metal Alumosilicates)
 These can be described by the following general formula
EQU M.sub.x/n [(AlO.sub.2).sub.x (SiO.sub.2).sub.y ].wH.sub.2 O
 in which n is the charge of the cation M;
 M is an element from the first or second main group, such as Li, Na, K, Mg,
 Ca, Sr or Ba;
 y:x is a number from 0.8 to 15, preferably from 0.8 to 1.2; and
 w is a number from 0 to 300, preferably from 0.5 to 30.
 Examples of zeolites are sodium aluminosilicates of the formulae
 Na.sub.12 Al.sub.12 Si.sub.12 O.sub.48.27 H.sub.2 O[zeolite A], Na.sub.6
 Al.sub.6 Si.sub.6 O.sub.24.2 NaX. 7.5 H.sub.2 O, X.dbd.OH, halogen,
 ClO.sub.4 [sodalite]; Na.sub.6 Al.sub.6 Si.sub.30 O.sub.72.24 H.sub.2 O;
 Na.sub.8 Al.sub.8 Si.sub.40 O.sub.96.24 H.sub.2 O; Na.sub.16 Al.sub.16
 Si.sub.24 O.sub.80.16 H.sub.2 O; Na.sub.16 Al.sub.16 Si.sub.32 O.sub.96.16
 H.sub.2 O; Na.sub.56 Al.sub.56 Si.sub.136 O.sub.384.250 H.sub.2 O[zeolite
 Y], Na.sub.86 Al.sub.86 Si.sub.106 O.sub.384.264 H.sub.2 O[zeolite X];
 or the zeolites preparable by complete or partial replacement of the Na
 atoms by Li, K, Mg, Ca, Sr or Zn atoms, such as
 (Na,K).sub.10 Al.sub.10 Si.sub.22 O.sub.64.20 H.sub.2 O; Ca.sub.4,5
 Na.sub.3 [(AlO.sub.2).sub.12 (SiO.sub.2).sub.12 ].30 H.sub.2 O; K.sub.9
 Na.sub.3 [(AlO.sub.2).sub.12 (SiO.sub.2).sub.12 ].27 H.sub.2 O,
 Preferred zeolites are those of the formulae
 Na.sub.12 Al.sub.12 Si.sub.12 O.sub.48.27 H.sub.2 O[zeolite A], Na.sub.6
 Al.sub.6 Si.sub.6 O.sub.24.2NaX.7.5 H.sub.2 O, X.dbd.OH, Cl,
 ClO.sub.4,1/2CO.sub.3 [sodalite]
 Na.sub.6 Al.sub.6 Si.sub.30 O.sub.72.24 H.sub.2 O,
 Na.sub.8 Al.sub.8 Si.sub.40 O.sub.96.24 H.sub.2 O,
 Na.sub.16 Al.sub.16 Si.sub.24 O.sub.80.16 H.sub.2 O,
 Na.sub.16 Al.sub.16 Si.sub.32 O.sub.96.16 H.sub.2 O,
 Na.sub.56 Al.sub.56 Si.sub.136 O.sub.384.250 H.sub.2 O[zeolite Y],
 Na.sub.86 Al.sub.86 Si.sub.106 O.sub.384.264 H.sub.2 O[zeolite X]
 and those X and Y zeolites having an Al/ Si ratio of about 1:1, or the
 zeolites preparable by complete or partial replacement of the Na atoms by
 Li, K, Mg, Ca, Sr, Ba or Zn atoms, such as
 (Na,K).sub.10 Al.sub.10 Si.sub.22 O.sub.64.20 H.sub.2 O.
 Ca.sub.4,5 Na.sub.3 [(AlO.sub.2).sub.2 (SiO.sub.2).sub.12 ].30 H.sub.2 O
 K.sub.9 Na.sub.3 [(AlO.sub.2).sub.12 (SiO.sub.2).sub.12 ].27 H.sub.2 O
 The zeolites indicated can also be lower in water content, or anhydrous.
 Further suitable zeolites are:
 Na.sub.2 O.Al.sub.2 O.sub.3.(2 to 5)SiO.sub.2.(3.5 to 10)H.sub.2 O[zeolite
 P]
 Na.sub.2 O.Al.sub.2 O.sub.3.2 SiO.sub.2.(3.5-10)H.sub.2 O(zeolite MAP)
 or the zeolites preparable by complete or partial replacement of the Na
 atoms by Li, K or H atoms, such as
 (Li,Na,K,H).sub.10 Al.sub.10 Si.sub.22 O.sub.64.20 H.sub.2 O.
 K.sub.9 Na.sub.3 [(AlO.sub.2).sub.12 (SiO.sub.2).sub.12 ].27 H.sub.2 O
 K.sub.4 Al.sub.4 Si.sub.4 O.sub.16.6H.sub.2 O[zeolite K-F]
 Na.sub.8 Al8Si.sub.40 O.sub.96.24H.sub.2 O[zeolite D], as described in
 Barrer et al., J. Chem. Soc. 1952, 1561-71, and in U.S. Pat. No.
 2,950,952;
 Also suitable are the following zeolites:
 K offretite, as described in EP-A-400,961;
 zeolite R, as described in GB 841,812;
 zeolite LZ-217, as described in U.S. Pat. No. 4,503,023;
 Ca-free zeolite LZ-218, as described in U.S. Pat. No. 4,333,859;
 zeolite T, zeolite LZ-220, as described in U.S. Pat. No. 4,503,023;
 Na.sub.30 K.sub.6 Al.sub.9 Si.sub.27 O.sub.72.21 H.sub.2 O[zeolite L];
 zeolite LZ-211, as described in U.S. Pat. No. 4,503,023;
 zeolite LZ-212, as described in U.S. Pat. No. 4,503,023;
 zeolite O, zeolite LZ-217, as described in U.S. Pat. No. 4,503,023;
 zeolite LZ-219, as described in U.S. Pat. No. 4,503,023;
 zeolite Rho, zeolite LZ-214, as described in U.S. Pat. No. 4,503,023;
 zeolite ZK-19, as described in Am. Mineral. 54 1607 (1969);
 zeolite W (K-M), as described in Barrer et al., J. Chem. Soc. 1956, 2882,
 Na.sub.30 Al.sub.30 Si.sub.66 O.sub.192.98 H.sub.2 O[zeolite ZK-5, zeolite
 Q]
 Particular preference is given to zeolite P grades of the above formula in
 which x is from 2 to 5 and y is from 3.5 to 10, and very particular
 preference is given to zeolite MAP of the stated formula in which x is 2
 and y is from 3.5 to 10. In particular, the zeolite concerned is zeolite
 Na-P, i.e. M is Na. This zeolite generally occurs in the variants Na-P-1,
 Na-P-2 and Na-P-3, which differ in their cubic, tetragonal or orthorhombic
 structure (R. M. Barrer, B. M. Munday, J. Chem. Soc. A 1971, 2909-14). The
 literature reference just referred to also describes the preparation of
 zeolite P-1 and P-2. According to that reference, zeolite P-3 is very rare
 and is therefore of virtually no practical interest. The structure of the
 zeolite P-1 corresponds to the gismondite structure known from the
 abovementioned Atlas of Zeolite Structures. In recent literature (EP-A-384
 070) a distinction is made between cubic (zeolite B or P.sub.c) and
 tetragonal (zeolite P.sub.1) zeolites of the P type. Also mentioned
 therein are relatively new zeolites of the P type having Si: Al ratios
 below 1.07:1. These are zeolites having the designation MAP or MA-P, for
 "Maximum Aluminum P". Depending on the preparation process, zeolite P may
 also include small fractions of other zeolites. Highly pure zeolite P has
 been described in WO 94/26662. Within the scope of the invention it is
 also possible to use those finely divided, water-insoluble sodium
 aluminosilicates which have been precipitated and crystallized in the
 presence of water-soluble organic or inorganic dispersants. These can be
 introduced into the reaction mixture in any desired manner, prior to or
 during the precipitation and crystallization. Very particular preference
 is given to Na zeolite A and Na zeolite P. The hydrotalcites and/or
 zeolites can be employed in amounts, for example, from 0.1 to 20,
 judiciously from 0.1 to 10 and, in particular, from 0.1 to 5 parts by
 weight per 100 parts by weight of halogen-containing polymer.
 Further customary additives can also be added to the compositions of the
 invention, such as stabilizers, auxiliaries and processing aids, examples
 being alkali metal compounds and alkaline earth metal compounds,
 lubricants, plasticizers, pigments, fillers, phosphites, thiophosphites
 and thiophosphates, mercaptocarboxylic esters, epoxidized fatty acid
 esters, antioxidants, UV absorbers and light stabilizers, optical
 brighteners, impact modifiers and processing aids, gelling agents,
 antistats, biocides, metal passivators, flame retardants and blowing
 agents, antifog agents, compatibilizers and antiplateout agents. (cf.
 "Handbook of PVC Formulating" by E. J. Wickson, John Wiley & Sons, New
 York 1993). Examples of such additives are as follows:
 I. Fillers: Fillers (HANDBOOK OF PVC FORMULATING E. J. Wickson, John Wiley
 & Sons, Inc., 1993, pp. 393-449) and reinforcing agents (TASCHENBUCH der
 KUNSTSTOFFADDITIVE, R. Gachter & H. Muller, Carl Hanser, 1990, pp.
 549-615) are, for example, calcium carbonate, dolomite, wollastonite,
 magnesium oxide, magnesium hydroxide, silicates, china clay, talc, glass
 fibers, glass beads, wood flour, mica, metal oxides, or metal hydroxides,
 carbon black, graphite, rock flour, heavy spar, glass fibers, talc, kaolin
 and chalk. Chalk is preferred. The fillers can be employed in an amount of
 preferably at least 1 part, for example, from 5 to 200, judiciously from
 10 to 150 and, in particular, from 15 to 100 parts by weight per 100 parts
 by weight of PVC.
 II. Metal soaps: Metal soaps are primarily metal carboxylates of preferably
 relatively long-chain carboxylic acids. Familiar examples are stearates
 and laurates, and also oleates and salts of shorter-chain alkanecarboxylic
 acids. Alkylbenzoic acids are also said to be included under metal soaps.
 Metals which may be mentioned are Li, Na, K, Mg, Ca, Sr, Ba, Zn, Al, La,
 Ce and rare earth metals. Use is often made of what are known as
 synergistic mixtures, such as barium/zinc, magnesium/zinc, calcium/zinc or
 calcium/magnesium/zinc stabilizers. The metal soaps can be employed
 individually or in mixtures. A review of common metal soaps is given in
 Ullmann's Encyclopedia of Industrial Chemistry, 5.sup.th Ed., Vol. A16
 (1985), p. 361 ff.). It is judicious to use organic metal soaps from the
 series of the aliphatic saturated C.sub.2 -C.sub.22 carboxylates, the
 aliphatic unsaturated C.sub.3 -C.sub.22 carboxylates, the aliphatic
 C.sub.2 -C.sub.22 carboxylates substituted by at least one OH group, the
 cyclic and bicyclic carboxylates having 5-22 carbon atoms, the
 unsubstituted benzenecarboxylates substituted by at least one OH group
 and/or by C.sub.1 -C.sub.16 -alkyl, the unsubstituted
 naphthalenecarboxylates substituted by at least one OH group and/or by
 C.sub.1 -C.sub.16 -alkyl, the phenyl C.sub.1 -C.sub.16 -alkylcarboxylates,
 the naphthyl C.sub.1 -C.sub.16 -alkylcarboxylates or the unsubstituted or
 C.sub.1 -C.sub.12 -alkyl-substituted phenolates, tallates and resinates.
 Named examples which may be mentioned are the zinc, calcium, magnesium or
 barium salts of monovalent carboxylic acids such as acetic, propionic,
 butyric, valeric, hexanoic, enanthic, octanoic, neodecanoic,
 2-ethylhexanoic, pelargonic, decanoic, undecanoic, dodecanoic,
 tridecanoic, myristic, palmitic, isostearic, stearic, 12-hydroxystearic,
 behenic, benzoic, p-tert-butylbenzoic, N,N-dimethylhydroxybenzoic,
 3,5-di-tert-butyl-4-hydroxybenzoic, toluic, dimethylbenzoic, ethylbenzoic,
 n-propylbenzoic, salicylic, p-tert-octylsalicylic and sorbic acid;
 calcium, magnesium and zinc salts of the monoesters of divalent carboxylic
 acids such as oxalic, malonic, succinic, glutaric, adipic, fumaric,
 pentane-1,5-dicarboxylic, hexane-1,6-dicarboxylic,
 heptane-1,7-dicarboxylic, octane-1,8-dicarboxylic, phthalic, isophthalic,
 terephthalic and hydroxyphthalic acid; and of the di- or triesters of tri-
 or tetravalent carboxylic acids such as hemimellitic, trimellitic,
 pyromellitic and citric acid. Preference is given to calcium, magnesium
 and zinc carboxylates of carboxylic acids having 7 to 18 carbon atoms
 (metal soaps in the narrow sense), such as, for example, benzoates or
 alkanoates, preferably stearate, oleate, laurate, palmitate, behenate,
 hydroxystearates, dihydroxystearates or 2-ethylhexanoate. Particular
 preference is given to stearate, oleate and p-tert-butylbenzoate.
 Overbased carboxylates, such as overbased zinc octoate, are also
 preferred. Preference is likewise given to overbased calcium soaps. If
 desired, it is also possible to employ a mixture of carboxylates of
 different structures. Preference is given to compositions, as described,
 comprising an organozinc and/or organocalcium compound. In addition to the
 compounds mentioned, organoaluminum compounds are also suitable, as are
 compounds analogous to those mentioned above, especially aluminum
 tristearate, aluminum distearate and aluminum monostearate, and also
 aluminum acetate and basic derivatives derived therefrom. Further
 information on the aluminum compounds which can be used and are preferred
 is given in U.S. Pat. Nos. 4,060,512 and 3,243,394.
 Also suitable in addition to the compounds already mentioned are organic
 rare earth compounds, especially compounds analogous to those mentioned
 above. The term rare earth compound means especially compounds of the
 elements cerium, praseodymium, neodymium, samarium, europium, lo
 gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium,
 lutetium, lanthanum and yttrium, mixtures--especially with cerium--being
 preferred. Further preferred rare earth compounds can be found in EP-A-0
 108 023.
 It is possible if desired to employ a mixture of zinc, alkali metal,
 alkaline earth metal, aluminum, cerium, lanthanum or lanthanoid compounds
 of different structure. It is also possible for organozinc,
 organoaluminum, organocerium, organo-alkali metal, organo-alkaline earth
 metal, organolanthanum or organolanthanoid compounds to be coated on an
 alumo salt compound; in this regard see also DE-A-4 031 818.
 The metal soaps and/or mixtures thereof can be employed in an amount of,
 for example, from 0.001 to 10 parts by weight, judiciously from 0.01 to 8
 parts and, with particular preference, from 0.05 to 5 parts by weight per
 100 parts by weight of PVC. The same applies to the further metal
 stabilizers:
 III. Further metal stabilizers: Here, mention may be made in particular of
 the organotin stabilizers. These can be the carboxylates, mercaptides and
 sulfides, in particular. Examples of suitable compounds are described in
 U.S. Pat. No. 4,743,640.
 IV. Alkali metal and alkaline earth metal compounds: By these are meant
 principally the carboxylates of the above-described acids, but also
 corresponding oxides and/or hydroxides or carbonates. Also suitable are
 mixtures thereof with organic acids. Examples are LiOH, NaOH, KOH, CaO,
 Ca(OH.sub.2), MgO, Mg(OH).sub.2, Sr(OH).sub.2, Al(OH).sub.3, CaCO.sub.3
 and MgCO.sub.3 (also basic carbonates, such as magnesia alba and huntite),
 and also Na and K salts of fatty acids. In the case of alkaline earth
 metal and Zn carboxylates it is also possible to employ their adducts with
 MO or M(OH).sub.2 (M.dbd.Ca, Mg, Sr or Zn), known as "overbased"
 compounds. In addition to the stabilizer combination of the invention it
 is preferred to employ alkali metal carboxylates, alkaline earth metal
 carboxylates and/or aluminum carboxylates.
 V. Lubricants: Examples of suitable lubricants are montan wax, fatty acid
 esters, PE waxes, amide waxes, chlorinated paraffins, glycerol esters or
 alkaline earth metal soaps. Lubricants which can be used are also
 described in "Kunststoffadditive", R. Gachter/H. Muller, Carl Hanser
 Verlag, 3rd Ed., 1989, pages 478-488. Mention may also be made of fatty
 ketones (as described in DE 4 204 887) and of silicone-based lubricants
 (as described in EP 0 225 261) or combinations thereof, as set out in EP 0
 259 783. Calcium stearate is preferred. The lubricants can also be applied
 to an alumo salt compound; in this regard see also DE-A-4 031 818.
 VI. Plasticizers: Examples of suitable organic plasticizers are those from
 the following groups:
 A) Phthalates: examples of such plasticizers are dimethyl, diethyl,
 dibutyl, dihexyl, di-2-ethylhexyl, di-n-octyl, diisooctyl, diisononyl,
 diisodecyl, diisotridecyl, dicyclohexyl, dimethylcyclohexyl,
 dimethylglycol, dibutylglycol, benzyl butyl and diphenyl phthalate, and
 also mixtures of phthalates, such as C.sub.7 -C.sub.9 - and C.sub.9
 -C.sub.11 -alkyl phthalates obtained from predominantly linear alcohols,
 C.sub.6 -C.sub.10 -n-alkyl phthalates and C.sub.8 -C.sub.10 -n-alkyl
 phthalates. Of these preference is given to dibutyl, dihexyl,
 di-2-ethylhexyl, di-n-octyl, diisooctyl, diisononyl, diisodecyl,
 diisotridecyl and benzyl butyl phthalate, and the stated mixtures of alkyl
 phthalates. Particular preference is given to di-2-ethylhexyl, diisononyl
 and diisodecyl phthalate, which are also known by the common abbreviations
 DOP (dioctyl phthalate, di-2-ethylhexyl phthalate), DINP (diisononyl
 phthalate) and DIDP (diisodecyl phthalate).
 B) Esters of aliphatic dicarboxylic acids, especially esters of adipic,
 azelaic and sebacic acid: examples of such plasticizers are
 di-2-ethylhexyl adipate, diisooctyl adipate (mixture), diisononyl adipate
 (mixture), diisodecyl adipate (mixture), benzyl butyl adipate, benzyl
 octyl adipate, di-2-ethylhexyl azelate, di-2-ethylhexyl sebacate and
 diisodecyl sebacate (mixture). Di-2-ethylhexyl adipate and diisooctyl
 adipate are preferred.
 C) Trimellitates, examples being tri-2-ethylhexyl trimellitate, triisodecyl
 trimellitate (mixture), triisotridecyl trimellitate, triisooctyl
 trimellitate (mixture) and also tri-C.sub.6 -C.sub.8 -alkyl, tri-C.sub.6
 -C.sub.10 -alkyl, tri-C.sub.7 -C.sub.9 -alkyl- and tri-C.sub.9 -C.sub.11
 -alkyl trimellitates. The latter trimellitates are formed by
 esterification of trimellitic acid with the corresponding alkanol
 mixtures. Preferred trimellitates are tri-2-ethylhexyl trimellitate and
 the abovementioned trimellitates from alkanol mixtures. Customary
 abbreviations are TOTM (trioctyl trimellitate, tri-2-ethyl-hexyl
 trimellitate), TIDTM (triisodecyl trimellitate) and TITDTM (triisotridecyl
 trimellitate).
 D) Epoxy plasticizers: these are primarily epoxidized unsaturated fatty
 acids, such as epoxidized soybean oil.
 E) Polymer plasticizers: a definition of these plasticizers and examples of
 them are given in "Kunststoffadditive", R. Gachter/H. Muller, Carl Hanser
 Verlag, 3rd ed., 1989, section 5.9.6, pages 412-415, and also in "PVC
 Technology", W. V. Titow, 4th ed., Elsevier Publ., 1984, pages 165-170.
 The most common starting materials for preparing the polyester
 plasticizers are dicarboxylic acids, such as adipic, phthalic, azelaic and
 sebacic acids; diols, such as 1,2-propanediol, 1,3-butanediol,
 1,4-butanediol, 1,6-hexanediol, neopentyl glycol and diethylene glycol.
 F) Phosphoric esters: a definition of these esters is given in the
 abovementioned "Taschenbuch der Kunststoffadditive" section 5.9.5, pp.
 408-412. Examples of such phosphoric esters are tributyl phosphate,
 tri-2-ethylbutyl phosphate, tri-2-ethylhexyl phosphate, trichloroethyl
 phosphate, 2-ethylhexyl diphenyl phosphate, cresyl diphenyl phosphate,
 triphenyl phosphate, tricresyl phosphate and trixylenyl phosphate.
 Preference is given to tri-2-ethylhexyl phosphate and to .RTM.Reofos 50
 and 95 (Ciba Spezialitatenchemie).
 G) Chlorinated hydrocarbons (paraffins)
 H) Hydrocarbons
 I) Monoesters, e.g., butyl oleate, phenoxyethyl oleate, tetrahydrofurfuryl
 oleate and alkylsulfonic esters.
 J) Glycol esters, e.g., diglycol benzoates.
 Definitions and examples of plasticizers of groups G) to J) are given in
 the following handbooks:
 "Kunststoffadditive", R. Gachter/H. Muller, Carl Hanser Verlag, 3rd ed.,
 1989, section 5.9.14.2, pp. 422-425, (group G), and section 5.9.14.1, p.
 422, (group H).
 "PVC Technology", W. V. Titow, 4th ed., Elsevier Publishers, 1984, section
 6.10.2, pages 171-173, (group G), section 6.10.5 page 174, (group H),
 section 6.10.3, page 173, (group I) and section 6.10.4, pages 173-174
 (group J).
 It is also possible to use mixtures of different plasticizers. The
 plasticizers can be employed in an amount of, for example, from 5 to 20
 parts by weight, judiciously from 10 to 20 parts by weight, per 100 parts
 by weight of PVC. Rigid or semirigid PVC contains preferably up to 10%,
 with particular preference up to 5%, or no plasticizer.
 VII. Pigments: Suitable substances are known to the person skilled in the
 art. Examples of inorganic pigments are TiO.sub.2, zirconium oxide-based
 pigments, BaSO.sub.4, zinc oxide (zinc white) and lithopones (zinc
 sulfide/barium sulfate), carbon black, carbon black/titanium dioxide
 mixtures, iron oxide pigments, Sb.sub.2 O.sub.3, (Ti,Ba,Sb)O.sub.2,
 Cr.sub.2 O.sub.3, spinels, such as cobalt blue and cobalt green, Cd(S,Se),
 ultramarine blue. Organic pigments are, for example, azo pigments,
 phthalocyanine pigments, quinacridone pigments, perylene pigments,
 diketopyrrolopyrrole pigments and anthraquinone pigments. Preference is
 also given to TiO.sub.2 in micronized form. A definition and further
 descriptions are given in "Handbook of PVC Formulating", E. J. Wickson,
 John Wiley & Sons, New York, 1993.
 VIII. Phosphites (phosphorous triesters): Examples are triphenyl phosphite,
 diphenyl alkyl phosphites, phenyl dialkyl phosphites, tris(nonylphenyl)
 phosphite, trilauryl phosphite, trioctadecyl phosphite, distearyl
 pentaerythritol diphosphite, tris(2,4-di-tert-butylphenyl)phosphite,
 diisodecyl pentaerythritol diphosphite,
 bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite,
 bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite,
 bisisodecyloxy-pentaerythritol diphosphite,
 bis(2,4-di-tert-butyl-6-methylphenyl)pentaerythritol diphosphite,
 bis(2,4,6-tri-tert-butylphenyl)pentaerythritol diphosphite, tristearyl
 sorbitol triphosphite, bis(2,4-di-tert-butyl-6-methylphenyl)methyl
 phosphite, bis(2,4-di-tert-butyl-6-methylphenyl)ethyl phosphite.
 Particularly suitable are trioctyl, tridecyl, tridodecyl, tritetradecyl,
 tristearyl, trioleyl, triphenyl, tricresyl, tris-p-nonylphenyl or
 tricyclohexyl phosphite and, with particular preference, the aryl dialkyl
 and alkyl diaryl phosphites, examples being phenyl didecyl,
 2,4-di-tert-butylphenyl didodecyl phosphite, 2,6-di-tert-butylphenyl
 didodecyl phosphite and the dialkyl and diaryl pentaerythritol
 diphosphites, such as distearyl pentaerythritol diphosphite, and also
 nonstoichiometric triaryl phosphites whose composition is, for example,
 (H.sub.19 C.sub.9 -C.sub.6 H.sub.4)O.sub.1.5 P(OC.sub.12,13
 H.sub.25,27).sub.1.5 or (H.sub.8 C.sub.17 -C.sub.6 H.sub.4)O.sub.2
 P(i-C.sub.8 H.sub.17 O) or H.sub.19 C.sub.9 -C.sub.6 H.sub.4)O.sub.1.5
 P(OC.sub.9,11 H.sub.19,23).sub.1,5 or
 ##STR4##
 Preferred organic phosphites are distearyl pentaerythritol diphosphite,
 trisnonylphenyl phosphite and phenyl didecyl phosphite. Other suitable
 phosphites are phosphorous diesters (with abovementioned radicals) and
 phosphorous monoesters (with abovementioned radicals), possibly in the
 form of their alkali metal, alkaline earth metal, zinc or aluminum salts.
 It is also possible for these phosphorous esters to have been applied to
 an alumo salt compound; in this regard see also DE-A-4 031 818. The
 organic phosphites can be employed in an amount of, for example, from 0.01
 to 10, judiciously from 0.05 to 5 and, in particular, from 0.1 to 3 parts
 by weight per 100 parts by weight of PVC.
 IX. Thiophosphites and thiophosphates: By thiophosphites and thiophosphates
 are meant compounds of the general type (RS).sub.3 P, (RS).sub.3 P=O and
 (RS).sub.3 P=S, respectively, as are described, for instance, in the
 patents DE 2 809 492, EP 0 090 770 and EP 0 573 394. Examples of these
 compounds are trithiohexyl phosphite, trithiooctyl phosphite,
 trithiolauryl phosphite, trithiobenzyl phosphite, trithiophosphorous acid
 tris(carbo-i-octyloxy)methyl ester, trithiophosphorous acid
 tris(carbotrimethylcyclohexyloxy)methyl ester, trithiophosphoric acid
 S,S,S-tris(carbo-i-octyloxy)methyl ester, trithiophosphoric acid
 S,S,S-tris(carbo-2-ethylhexyloxy)methyl ester, trithiophosphoric acid
 S,S,S-tris-1-(carbohexyloxy)ethyl ester, trithiophosphoric acid
 S,S,S-tris-1-(carbo-2-ethylhexyloxy)ethyl ester and trithiophosphoric acid
 S,S,S-tris-2-(carbo-2-ethylhexyloxy)ethyl ester.
 X. Mercaptocarboxylic esters: Examples of these compounds are esters of
 thioglycolic acid, thiomalic acid, mercaptopropionic acid, the
 mercaptobenzoic acids and thiolactic acid, mercaptoethyl stearate and
 mercaptoethyl oleate, as are described in patents FR 2 459 816, EP 0 090
 748, FR 2 552 440 and EP 0 365 483. The generic mercaptocarboxylic esters
 also embrace polyol esters and partial esters thereof, and also thioethers
 derived from them.
 XI. Epoxidized fatty acid esters and other epoxy compounds: The stabilizer
 combination of the invention may additionally comprise preferably at least
 one epoxidized fatty acid ester. Particularly suitable such esters are
 those of fatty acids from natural sources (fatty acid glycerides), such as
 soybean oil or rapeseed oil. It is, however, also possible to employ
 synthetic products such as epoxidized butyl oleate. Epoxidized
 polybutadiene and polyisoprene can also be used, as they are or in
 partially hydroxylated form, or else homo- or copolymeric glycidyl
 acrylate and glycidyl methacrylate can be used. These epoxy compounds can
 also have been applied to an alumo salt compound; in this regard see also
 DE-A-4 031 818.
 XII. Antioxidants Examples of suitable such compounds are:
 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-iso-butylphenol,
 2,6-di-cyclopentyl-4-methylphenol,
 2-(alpha-methylcyclohexyl)-4,6-dimethylphenol,
 2,6-di-octadecyl-4-methylphenol, 2,4,6-tricyclohexylphenol,
 2,6-di-tert-butyl-4-methoxymethylphenol, 2,6-dinonyl-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, octylphenol, nonylphenol,
 dodecylphenol and mixtures thereof.
 Alkylthiomethylphenols, for example,
 2,4-dioctylthiomethyl-6-tert-butylphenol,
 2,4-dioctylthiomethyl-6-methylphenol, 2,4-dioctylthiomethyl-6-ethylphenol,
 2,6-didodecylthiomethyl-4-nonylphenol.
 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.
 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.
 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-(alpha-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-butyl-phenol),
 2,2'-ethylidenebis(6-tert-butyl-4-isobutylphenol),
 2,2'-methylenebis[6-(alpha-methylbenzyl)-4-nonylphenol],
 2,2'-methylenebis[6-(alpha,alpha-di-methylbenzyl)-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-methyl-phenyl)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-methylphen
 yl]terephthalate, 1,1-bis(3,5-dimethyl-2-hydroxyphenyl)butane,
 2,2-bis(3,5-di-tert-butyl-4-hydroxyphenyl)propane,
 2,2-bis(4-hydroxy-phenyl)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.
 Benzyl compounds, for example,
 3,5,3',5'-tetra-tert-butyl-4,4'-dihydroxydibenzyl ether, octadecyl
 4-hydroxy-3,5-dimethylbenzyl-mercaptoacetate,
 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-hydroxybenzyl-mercaptoacetate.
 Hydroxybenzylated malonates, for example, dioctadecyl
 2,2-bis(3,5-di-tert-butyl-2-hydroxybenzyl)malonate, dioctadecyl
 2-(3-tert-butyl-4-hydroxy-5-methylbenzyl)malonate, didodecyl
 mercaptoethyl-2,2-bis(3,5-di-tert-butyl-4-hydroxybenzyl)malonate,
 di[4-(1,1,3,3-tetramethylbutyl)-phenyl]2,2-bis(3,5-di-tert-butyl-4-hydroxy
 benzyl)malonate.
 Aromatic hydroxybenzyl compounds, for example,
 1,3,5-tris(3,5-di-tert-butyl4-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.
 Triazine compounds, for example,
 2,4-bisoctylmercapto-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-triazin
 e,
 2-octylmercapto-4,6-bis-(3,5-di-tert-butyl-4-hydroxyphenoxy)-1,3,5-triazin
 e, 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-hydroxyphenylpropionyl)hexahydro-1,3,5-tria
 zine, 1,3,5-tris-(3,5-dicyclohexyl-4-hydroxybenzyl)isocyanurate.
 Phosphonates and phosphonites, for example, dimethyl
 2,5-di-tert-butyl-4-hydroxybenzylphosphonate, diethyl
 3,5-di-tert-butyl-4-hydroxy-benzylphosphonate, dioctadecyl
 3,5-di-tert-butyl4-hydroxybenzylphosphonate, dioctadecyl
 5-tert-butyl-4-hydroxy-3-methylbenzylphosphonate, Ca salt of monoethyl
 3,5-di-tert-butyl-4-hydroxybenzylphosphonate,
 tetrakis(2,4-di-tert-butylphenyl)-4,4'-biphenylenediphosphonite,
 6-isooctyloxy-2,4,8,10-tetra-tert-butyl-12H-dibenz[d,g]-1,3,2-dioxaphospho
 cine,
 6-fluoro-2,4,8,10-tetra-tert-butyl-12-methyl-dibenz[d,g]-1,3,2-dioxaphosph
 ocine.
 Acylaminophenols, for example, 4-hydroxylauranilide, 4-hydroxystearanilide,
 octyl N-(3,5-di-tert-butyl-4-hydroxyphenyl)carbamate.
 Esters of beta-(3,5-di-tert-butyl-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-propane diol,
 neopentyl glycol, thiodiethylene glycol, diethylene glycol, triethylene
 glycol, pentaerythritol, dipentaerythritol,
 tris(hydroxyethyl)isocyanurate, N,N'-bis(hydroxyethyl)oxalamide,
 3-thiaundecanol, 3-thiapentadecanol, trimethylhexanediol,
 trimethylolpropane, ditrimethylolpropane,
 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
 Esters of beta-(5-tert-butyl-4-hydroxy-3-methylphenyl)propionic acid with
 mono- or polyhydric alcohols, for example, 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(hydroxy)ethyl
 isocyanurate, N,N'-bis(hydroxyethyl)oxalamide, 3-thiaundecanol,
 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane,
 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
 Esters of beta-(3,5-dicyclohexyl-4-hydroxyphenyl)propionic acid with mono-
 or polyhydric alcohols, for example, 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(hydroxy)ethyl
 isocyanurate, N,N'-bis(hydroxyethyl)oxalamide, 3-thiaundecanol,
 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane,
 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
 Esters of 3,5-di-tert-butyl-4-hydroxyphenylacetic acid with mono- or
 polyhydric alcohols, for example, 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(hydroxy)ethyl
 isocyanurate, N,N'-bis(hydroxyethyl)oxalamide, 3-thiaundecanol,
 3-thiapentadecanol, trimethylhexanediol, trimethylolpropane,
 4-hydroxymethyl-1-phospha-2,6,7-trioxabicyclo[2.2.2]octane.
 Amides of beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid, such as,
 for example,
 N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hexamethylenediamine,
 N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)trimethylene diamine,
 N,N'-bis(3,5-di-tert-butyl-4-hydroxyphenylpropionyl)hydrazine.
 Vitamin E (tocopherol) and derivatives.
 Preference is given to antioxidants of groups 1-5, 10 and 12, especially
 2,2-bis(4-hydroxyphenyl)propane, esters of
 3,5-di-tert-butyl-4-hydroxyphenylpropionic acid with octanol, octadecanol
 or pentaerythritol or tris(2,4-di-tertbutylphenyl)phosphite. It is also
 possible, if desired, to employ a mixture of antioxidants of different
 structures. The antioxidants can be employed in an amount of, for example,
 from 0.01 to 10 parts by weight, judiciously from 0.1 to 10 parts by
 weight and in particular, from 0.1 to 5 parts by weight per 100 parts by
 weight of PVC.
 XIII. UV absorbers and light stabilizers: Examples of these are:
 2-(2'-Hydroxyphenyl)benzotriazoles, such as, 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-chloro-benzotriazole,
 2-(3'-sec-butyl-5'-tert-butyl-2'-hydroxyphenyl)benzotriazole,
 2-(2'-hydroxy-4'-octoxyphenyl)benzotriazole,
 2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole,
 2-(3',5'-bis(alpha,alphadimethylbenzyl)-2'-hydroxyphenyl)benzotriazole,
 mixtures of
 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)-5-chlorobe
 nzotriazole,
 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)-5
 -chlorobenzotriazole,
 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)-5-chloroben
 zotriazole,
 2-(3'-tert-butyl-2'-hydroxy-5'-(2-methoxycarbonylethyl)phenyl)benzotriazol
 e,
 2-(3'-tert-butyl-2'-hydroxy-5'-(2-octyloxycarbonylethyl)phenyl)benzotriazo
 le,
 2-(3'-tert-butyl-5'-[2-(2-ethylhexyloxy)carbonylethyl]-2'-hydroxyphenyl)be
 nzotriazole, 2-(3'-dodecyl-2'-hydroxy-5'-methylphenyl)benzotriazole and
 2-(3'-tert-butyl-2'-hydroxy-5'-(2-isooctyloxycarbonylethyl)phenylbenzotria
 zole,
 2,2'-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-benzotriazol-2-ylphenol];
 the transesterification product of
 2-[3'-tert-butyl-5'-(2-methoxycarbonylethyl)-2'-hydroxyphenyl]benzotriazol
 e with polyethylene glycol
 ##STR5##
 where R=3'-tert-butyl4'-hydroxy-5'-2H-benzotriazol-2-yl-phenyl.
 2-Hydroxybenzophenones, for example the 4-hydroxy, 4-methoxy, 4-octoxy,
 4-decyloxy, 4-dodecyloxy, 4-benzyloxy, 4,2',4'-trihydroxy,
 2'-hydroxy-4,4'-dimethoxy derivative.
 Esters of substituted or unsubstituted benzoic acids, for example
 4-tert-butylphenyl salicylate, phenyl salicylate, octylphenyl salicylate,
 dibenzoylresorcinol, bis(4-tert-butylbenzoyl)resorcinol,
 benzoylresorcinol, 2,4-di-tert-butylphenyl
 3,5-di-tert-butyl-4-hydroxybenzoate, hexadecyl
 3,5-di-tert-butyl4-hydroxybenzoate, octadecyl
 3,5-di-tert-butyl-4-hydroxybenzoate, 2-methyl-4,6-di-tert-butylphenyl
 3,5-di-tert-butyl-4-hydroxy-benzoate.
 Acrylates, for example ethyl alpha-cyano-beta,beta-diphenylacrylate or
 isooctyl-ethyl alpha-cyano-beta,beta-diphenylacrylate, methyl
 alpha-carbomethoxycinnamate, methyl
 alpha-cyano-beta-methyl-p-methoxycinnamate or butyl
 alpha-cyano-beta-methyl-p-methoxycinnamate, methyl
 alpha-carbomethoxy-p-methoxycinnamate,
 N-(beta-carbomethoxy-b-cyanovinyl)-2-methylindoline.
 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 monoalkyl esters such as the
 methyl or ethyl ester, of 4-hydroxy-3,5-di-tert-butylbenzylphosphonic
 acid, nickel complexes of ketoximes, such as of 2-hydroxy-4-methylphenyl
 undecyl ketoxime, nickel complexes of
 I-phenyl-4-lauroyl-5-hydroxypyrazole, with or without additional ligands.
 Oxalamides, for example 4,4'-dioctyloxyoxanilide,
 2,2'-dioctyloxy-5,5'-di-tert-butyl-oxanilide,
 2,2'-didodecyloxy-5,5'-di-tert-butyloxanilide,
 2-ethoxy-2'-ethyl-oxanilide, N,N'-bis(3-dimethylaminopropyl)oxalamide,
 2-ethoxy-5-tert-butyl-2'-ethyloxanilide and its mixture with
 2-ethoxy-2'-ethyl-5,4'-di-tert-butyloxanilide, mixtures of o- and
 p-methoxy and of o- and p-ethoxy-di-substituted oxanilides.
 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-triazin
 e,
 2-[2-hydroxy-4-(2-hydroxy-3-butyloxypropyloxy)phenyl]-4,6-bis-(2,4-dimethy
 lphenyl)-1,3,5-triazine,
 2-[2-hydroxy-4-(2-hydroxy-3-octyloxypropyloxy)phenyl]-4,6-bis(2,4-dimethyl
 phenyl)-1,3,5-triazine.
 Sterically hindered amines, for example
 bis(2,2,6,6-tetramethyl-piperidin-4-yl)sebacate,
 bis(2,2,6,6-tetramethylpiperidin-4-yl)succinate,
 bis(1,2,2,6,6-pentamethylpiperidin-4-yl)sebacate,
 bis(1-octyloxy-2,2,6,6-tetramethylpiperidin-4-yl)sebacate,
 bis(1,2,2,6,6-pentamethylpiperidyl)n-butyl-3,5-di-tert-butyl-4-hydroxybenz
 ylmalonate, the condensate of 1
 -hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid,
 linear or cyclic condensates of
 N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and
 4-tert-octylamino-2,6-dichloro-1,3,5-s-triazine,
 tris(2,2,6,6-tetramethyl-4-piperidyl)nitrilotriacetate,
 tetrakis(2,2,6,6-tetramethyl-4-piperidyl) 1,2,3,4-butanetetraoate,
 1,1.varies.-(1,2-ethanediyl)-bis(3,3,5,5-tetramethylpiperazinone),
 4-benzoyl-2,2,6,6-tetramethylpiperidine,
 4-stearyloxy-2,2,6,6-tetramethylpiperidine,
 bis(1,2,2,6,6-pentamethylpiperidyl)
 2-n-butyl-2-(2-hydroxy-3,5-di-tert-butylbenzyl)malonate,
 3-n-octyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro-[4.5]decane-2,4-dione,
 bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)sebacate,
 bis(1-octyloxy-2,2,6,6-tetramethylpiperidyl)succinate, linear or cyclic
 condensates of
 N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and
 4-morpholino-2,6-dichloro-1,3,5-triazine, the condensate of
 2-chloro-4,6-di(4-n-butylamino-2,2,6,6-tetramethylpiperidyl)-1,3,5-triazin
 e and 1,2-bis(3-aminopropylamino)ethane, the condensate of
 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triaz
 ine and 1,2-bis(3-aminopropylamino)ethane,
 8-acetyl-3-dodecyl-7,7,9,9-tetramethyl-1,3,8-triazaspiro[4.
 5]decane-2,4-dione,
 3-dodecyl-1-(2,2,6,6-tetramethyl-4-piperidyl)pyrrolidine-2,5-dione,
 3-dodecyl-1-(1,2,2,6,6-pentamethyl-4-piperidyl)pyrrolidine-2,5-dione,
 mixtures of 4-hexadecyloxy- and
 4-stearyloxy-2,2,6,6-tetramethylpiperidine, the condensate of
 N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)hexamethylendiamine and
 4-cyclohexylamino-2,6-dichloro-1,3,5-triazine, the condensate of
 1,2-bis(3-aminopropylamino)ethane and 2,4,6-trichloro-1,3,5-triazine, and
 also 4-butylamino-2,2,6,6-tetramethylpiperidine (CAS Reg. No.
 [136504-96-6]); N-(2,2,6,6-tetramethyl-4-piperidyl)-n-dodecylsuccinimide,
 N-(1,2,2,6,6-pentamethyl4-piperidyl)-n-dodecylsuccinimide,
 2-undecyl-7,7,9,9-tetramethyl-1-oxa-3,8-diaza-4-oxo-spiro[4.5]decane, the
 reaction product of
 7,7,9,9-tetramethyl-2-cycloundecyl-1-oxa-3,8-diaza-4-oxospiro[4.5]decane
 and epichlorohydrin,
 1,1-bis(1,2,2,6,6-pentamethyl-4-piperidyloxycarbonyl)-2-(4-methoxyphenyl)e
 thene,
 N,N'-bisformyl-N,N'-bis(2,2,6,6-tetramethyl-4-piperidyl)-hexamethylenediam
 ine, the diester of 4-methoxymethylenemalonic acid with
 1,2,2,6,6-pentamethyl-4-hydroxypiperidine,
 poly[methylpropyl-3-oxy-4-(2,2,6,6-tetramethyl-4-piperidyl)]-siloxane, the
 reaction product of maleic anhydride-.alpha.-olefin copolymer and
 2,2,6,6-tetramethyl-4-aminopiperidine or
 1,2,2,6,6-pentamethyl-4-aminopiperidine.
 XIV. Blowing agents: Examples of blowing agents are organic azo and hydrazo
 compounds, tetrazoles, oxazines, isatoic anhydride, and also sodium
 carbonate and sodium bicarbonate. Preference is given to azodicarboxamide
 and sodium bicarbonate and mixtures thereof. Definitions and examples of
 impact modifiers and processing aids, gelling agents, antistats, biocides,
 metal passivators, optical brighteners, flame retardants, antifogging
 agents and compatibilizers are described in "Kunststoffadditive", R.
 Gachter/H. Muller, Carl Hanser Verlag, 3rd ed., 1989, and in the "Handbook
 of Polyvinyl Chloride Formulating" E. J. Wickson, J. Wiley & Sons, 1993,
 and in "Plastics Additives" G. Pritchard, Chapman & Hall, London, 1st ed.,
 1998. Impact modifiers are also described in detail in "Impact Modifiers
 for PVC", J. T. Lutz/D. L. Dunkelberger, John Wiley & Sons, 1992.
 XV. beta-Diketones, beta-keto esters: 1,3-dicarbonyl compounds which can be
 used may be linear or cyclic dicarbonyl compounds. Preference is given to
 the use of dicarbonyl compounds of the following formula: R'.sub.1 CO
 CHR'.sub.2 --COR'.sub.3 in which R'.sub.1 is C.sub.1 -C.sub.22 -alkyl,
 C.sub.5 -C.sub.10 -hydroxyalkyl, C.sub.2 -C.sub.18 -alkenyl, phenyl, OH--,
 C.sub.1 -C.sub.4 -alkyl-, C.sub.1 -C.sub.4 -alkoxy- or halogen-substituted
 phenyl, C.sub.7 -C.sub.10 -phenylalkyl, C.sub.5 -C.sub.12 -cycloalkyl,
 C.sub.1 -C.sub.4 -alkyl-substituted C.sub.5 -C.sub.12 -cycloalkyl or a
 group --R'.sub.5 S--R'.sub.6 or --R'.sub.5 --O--R'.sub.6, R'.sub.2 is
 hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.12 -alkenyl, phenyl,
 C.sub.7 -C.sub.12 -alkylphenyl, C.sub.7 -C.sub.10 -phenylalkyl or a group
 --CO--R'.sub.4, R'.sub.3 is as defined for R'.sub.1 or is C.sub.1
 -C.sub.18 -alkoxy, R'.sub.4 is C.sub.1 -C.sub.4 -alkyl or phenyl, R'.sub.5
 is C.sub.1 -C.sub.10 -alkylene and R'.sub.6 is C.sub.1 -C.sub.12 -alkyl,
 phenyl, C.sub.7 -C.sub.18 -alkylphenyl or C.sub.7 -C.sub.10 -phenylalky.
 These include the hydroxyl-containing diketones of EP 0 346 279 and the
 oxa and thia diketones of EP 0 307 358, as well as the keto esters based
 on isocyanic acid, of U.S. Pat. No. 4,339,383. R'.sub.1 and R'.sub.3 as
 alkyl can in particular be C.sub.1 -C.sub.18 -alkyl, such as, for example
 methyl, ethyl, n-propyl, isopropyl, n-butyl, tert-butyl, pentyl, hexyl,
 heptyl, octyl, decyl, dodecyl or octadecyl. R'.sub.1 and R'.sub.3 as
 hydroxyalkyl are in particular a group --(CH.sub.2).sub.n --OH in which n
 is 5, 6 or 7. R'.sub.1 and R'.sub.3 as alkenyl can for example be vinyl,
 allyl, methallyl, 1-butenyl, 1-hexenyl or oleyl, preferably allyl.
 R'.sub.1 and R'.sub.3 as OH--, alkyl-, alkoxy- or halogen-substituted
 phenyl can for example be tolyl, xylyl, tert-butylphenyl, methoxyphenyl,
 ethoxyphenyl, hydroxyphenyl, chlorophenyl or dichlorophenyl. R'.sub.1 and
 R'.sub.3 as phenylalkyl are in particular benzyl. R'.sub.2 and R'.sub.3 as
 cycloalkyl or alkylcycloalkyl are, in particular, cyclohexyl or
 methylcyclohexyl. R'.sub.2 as alkyl can in particular be C.sub.1 -C.sub.4
 -alkyl. R'.sub.2 as C.sub.2 -C.sub.12 -alkenyl can in particular be allyl.
 R'.sub.2 as alkylphenyl can in particular be tolyl. R'.sub.2 as
 phenylalkyl can in particular be benzyl. Preferably, R'.sub.2 is hydrogen.
 R'.sub.3 as alkoxy can for example be methoxy, ethoxy, butoxy, hexyloxy,
 octyloxy, dodecyloxy, tridecyloxy, tetradecyloxy or octadecyloxy. R'.sub.5
 as C.sub.1 -C.sub.10 -alkylene is, in particular, C.sub.2 -C.sub.4
 -alkylene. R'.sub.6 as alkyl is, in particular, C.sub.4 -C.sub.12 -alkyl,
 such as, for example butyl, hexyl, octyl, decyl or dodecyl. R'.sub.6 as
 alkylphenyl is in particular tolyl. R'.sub.6 as phenylalkyl is in
 particular benzyl. Examples of 1,3-dicarbonyl compounds of the above
 formula and their alkali metal, alkaline earth metal and zinc chelates are
 acetylacetone, butanoylacetone, heptanoylacetone, steroylacetone,
 palmitoylacetone, lauroylacetone, 7-tert-nonylthio-2,4-heptanedione,
 benzoylacetone, dibenzoylmethane, lauroylbenzoylmethane,
 palmitoylbenzoylmethane, stearoylbenzoylmethane, isooctylbenzoylmethane,
 5-hydroxycapronylbenzoylmethane, tribenzoylmethane,
 bis(4-methylbenzoyl)methane, benzoyl-p-chlorobenzoylmethane,
 bis(2-hydroxybenzoyl)methane, 4-methoxybenzoylbenzoylmethane,
 bis(4-methoxybenzoyl)methane, 1-benzoyl-1-acetylnonane,
 benzoylacetylphenylmethane, stearoyl-4-methoxybenzoylmethane,
 bis(4-tert-butylbenzoyl)methane, benzoylformylmethane,
 benzoylphenylacetylmethane, biscyclohexanoylmethane, di-pivaloylmethane,
 2-acetylcyclopentanone, 2-benzoylcyclopentanone, methyl, ethyl and allyl
 diacetoacetate, methyl and ethyl benzoyl-, propionyl- and
 butyrylacetoacetate, triacetylmethane, methyl, ethyl, hexyl, octyl,
 dodecyl or octadecyl acetoacetate, methyl, ethyl, butyl, 2-ethylhexyl,
 dodecyl or octadecyl benzoylacetate, and also C.sub.1 -C.sub.18 -alkyl
 propionylacetates and butyrylacetates; ethyl, propyl, butyl, hexyl or
 octyl stearoylacetate, and also polycyclic .beta.-keto esters, as
 described in EP 0 433 230, and dehydraacetic acid, and the zinc, magnesium
 or alkali metal salts thereof.
 Preference is given to 1,3-diketo compounds of the above formula in which
 R'.sub.1 is C.sub.1 -C.sub.18 -alkyl, phenyl, OH--, methyl- or
 methoxy-substituted phenyl, C.sub.7 -C.sub.10 -phenylalkyl or cyclohexyl,
 R'.sub.2 is hydrogen and R'.sub.3 is as defined for R'.sub.1. The
 1,3-diketo compounds can be employed in amount of, for example, from 0.01
 to 10, judiciously from 0.01 to 3 and, in particular, from 0.01 to 2 parts
 by weight per 100 parts by weight of PVC.
 Examples of the chlorine-containing polymers to be stabilized or their
 recyclates are: polymers of vinyl chloride and of vinylidene chloride,
 vinyl resins comprising vinyl chloride units in their structure, such as
 copolymers of vinyl chloride, and vinyl esters of aliphatic acids,
 especially vinyl acetate, copolymers of vinyl chloride with esters of
 acrylic and methacrylic acid and with acrylonitrile, copolymers of vinyl
 chloride with diene compounds and unsaturated dicarboxylic acids or their
 anhydrides, such as copolymers of vinyl chloride with diethyl maleate,
 diethyl fumarate or maleic anhydride, post-chlorinated polymers and
 copolymers of vinyl chloride, copolymers of vinyl chloride and vinylidene
 chloride with unsaturated aldehydes, ketones and others, such as acrolein,
 crotonaldehyde, vinyl methyl ketone, vinyl methyl ether, vinyl isobutyl
 ether and the like; polymers of vinylidene chloride and its copolymers
 with vinyl chloride and other polymerizable compounds; polymers of vinyl
 chloroacetate and dichlorodivinyl ether; chlorinated polymers of vinyl
 acetate, chlorinated polymeric esters of acrylic acid and of
 alpha-substituted acrylic acid; polymers of chlorinated styrenes, for
 example dichlorostyrene; chlorinated rubbers; chlorinated polymers of
 ethylene; polymers and post-chlorinated polymers of chlorobutadiene and
 copolymers thereof with vinyl chloride, chlorinated natural and synthetic
 rubbers, and also mixtures of these polymers with one another or with
 other polymerizable compounds. In the context of this invention, PVC also
 embraces copolymers with polymerizable compounds such as acrylonitrile,
 vinyl acetate or ABS, which can be suspension, bulk or emulsion polymers.
 Preference is given to a PVC homopolymer, alone or in combination with
 polyacrylates. Also included are graft polymers of PVC with EVA, ABS and
 MBS. Preferred substrates are also mixtures of the abovementioned homo-
 and copolymers, especially vinyl chloride homopolymers, with other
 thermoplastic and/or elastomeric polymers, especially blends with ABS,
 MBS, NBR, SAN, EVA, CPE, MBAS, PMA, PMMA, EPDM and polylactones. Examples
 of such components are compositions of (i) 20-80 parts by weight of a
 vinyl chloride homopolymer (PVC) and (ii) 80-20 parts by weight of at
 least one thermoplastic copolymer based on styrene and acrylonitrile, in
 particular from the group ABS, NBR, NAR, SAN and EVA. The abbreviations
 used for the copolymers are familiar to the person skilled in the art and
 have the following meanings: ABS: acrylonitrile-butadiene-styrene; SAN:
 styrene-acrylonitrile; NBR: acrylonitrile-butadiene; NAR:
 acrylonitrile-acrylate; EVA: ethylene-vinyl acetate. Also suitable in
 particular are acrylate-based styrene-acrylonitrile copolymers (ASA).
 Preferred components in this context are polymer compositions comprising
 as components (i) and (ii) a mixture of 25-75% by weight PVC and 75-25% by
 weight of the abovementioned copolymers. Examples of such compositions
 are: 25-50% by weight PVC and 75-50% by weight copolymers or 40-75% by
 weight PVC and 60-25% by weight copolymers. Preferred copolymers are ABS,
 SAN and modified EVA, especially ABS. NBR, NAR and EVA are also
 particularly suitable. In the composition of the invention it is possible
 for one or more of the abovementioned copolymers to be present.
 Particularly important components are compositions comprising (i) 100
 parts by weight of PVC and (ii) 0-300 parts by weight of ABS and/or
 SAN-modified ABS and 0-80 parts by weight of the copolymers NBR, NAR
 and/or EVA, but especially EVA. For stabilization in the context of this
 invention, further suitable polymers are, in particular, recyclates of
 chlorine-containing polymers, these polymers being the polymers described
 in more detail above that have also undergone damage through processing,
 use or storage. PVC recyclate is particularly preferred. The recyclates
 may also include small amounts of extraneous substances, such as, for
 example, paper, pigments, adhesives, which are often difficult to remove.
 These extraneous substances may also arise from contact with various
 materials in the course of use or reprocessing, examples being residues of
 fuel, fractions of coating material, traces of metal and residues of
 initiator.
 Stabilization in accordance with the invention is of particular advantage
 in the context of PVC formulations as are customary for pipes and
 profiles. Stabilization can be effected without heavy metal compounds (Sn,
 Pb, Cd, Zn stabilizers). This characteristic offers advantages in certain
 fields, since heavy metals--with the exception of zinc at best--are often
 unwanted both during the production and during the use of certain PVC
 articles, on ecological grounds. The production of heavy metal stabilizers
 also often causes problems from an industrial hygiene standpoint.
 Similarly, the processing of ores containing heavy metals is frequently
 associated with serious effects on the environment, the environment here
 including the biosystem of humankind, animals (fish), plants, the air and
 soil. For these reasons, the incineration and landfilling of plastics
 containing heavy metals is also controversial.
 The invention also relates to a method of stabilizing PVC, which comprises
 adding thereto at least one of the abovementioned stabilizer combinations.
 The stabilizers can judiciously be incorporated by the following methods:
 as an emulsion or dispersion (one possibility, for example, is the form of
 a pastelike mixture. An advantage of the combination of the invention in
 the case of this form is the stability of the paste.); as a dry mix in the
 course of the mixing of additional components or polymer mixtures; by
 direct addition to the processing apparatus (e.g. calenders, mixers,
 compounders, extruders and the like), or as a solution or melt or as
 flakes or pellets in dust-free form as a one-pack product.
 The PVC stabilized in accordance with the invention, to which the invention
 likewise relates, can be prepared in a manner known per se using devices
 known per se such as the abovementioned processing apparatus to mix the
 stabilizer combination of the invention and any further additives with the
 PVC. In this case, the stabilizers can be added individually or as a
 mixture or else in the form of so-called masterbatches. The PVC stabilized
 in accordance with the present invention can be brought into the desired
 form by known methods. Examples of such methods are milling, calendering,
 extruding, injection molding or spinning, and also extrusion blow molding.
 The stabilized PVC can also be processed to foam materials. A PVC
 stabilized in accordance with the invention is suitable, for example, for
 hollow articles (bottles), packaging films (thermoform sheets), blown
 films, pipes, foam materials, heavy profiles (window frames),
 transparent-wall profiles, construction profiles, sidings, fittings,
 office films and apparatus enclosures (computers, domestic appliances).
 Preference is given to PVC rigid foam articles and PVC pipes for drinking
 water or wastewater, pressure pipes, gas pipes, cable-duct pipes and cable
 protection pipes, pipes for industrial pipelines, seepage pipes, flowoff
 pipes, guttering pipes and drainage pipes. For further details on this
 subject see "Kunststoffhandbuch PVC", Vol. 2/2, W. Becker/H. Braun, 2nd
 ed., 1985, Carl Hanser Verlag, pages 1236-1277.
 6-Aminouracils are prepared by known methods [e.g., U.S. Pat. No.
 2,598,936, WO 96/04280 and J. Org. Chem. 16, 1879-1890 (1951)]. Compounds
 1 to 8 prepared are summarized in Table 1.
 As in the remainder of the text, parts and percentages are by weight unless
 stated otherwise.
 TABLE 1
 Water of
 Melting point crystallization
 Example Y R.sub.1 R.sub.2 Yield in .degree. C.(*) [mol]
 Appearance
 1 .smallcircle. allyl allyl 99% 92-94
 0.5 light brown crystals
 (toluene)
 2 .smallcircle. n-butyl allyl 98% 56-60
 4.25 beige crystals
 (MeOH/H.sub.2 O)
 3 .smallcircle. n-butyl phenyl 80% 172-179
 0.1 beige crystals
 (toluene)
 4 .smallcircle. n-butyl benzyl 94% 124-128
 1.0 beige crystals
 (toluene)
 5 .smallcircle. benzyl benzyl &gt;90% 105-107
 1.0 white crystals
 (ethyl acetate)
 6 .smallcircle. 2-phenethyl 2-phenethyl 94% 204-208
 0.2 white crystals
 (2-propanol)
 7 .smallcircle. ethoxypropyl phenyl 78% 130-131
 0.5 white crystals
 (toluene)
 8 .smallcircle. n-octyl n-octyl 95% 80-85
 1.0 white crystals
 (toluene)
 (*) = recrystallized from

EXAMPLE I
 Dehydrochlorination Test (DHC)
 The mixtures in accordance with the table and legend below are in each case
 plasticated on a set of mixing rollers at 180.degree. C. for 5 minutes.
 Test strips are cut from the resultant films (thickness: 0.3 mm) and these
 strips are subjected to a DHC test at 180.degree. C. in accordance with
 DIN 53381 (Part 1). The longer the time until a certain value (10 .mu.S/cm
 or 200 .mu.S/cm) is reached, the more effective the stabilizer system is.
 TABLE 2
 Stab. 1 Stab. 2 Stab. 5 Stab. 6 Stab. 4
 10 .mu.S/cm 64.0 74.5 83.5 78.0 80.0
 200 .mu.S/cm 67.0 79.0 88.0 84.5 84.0
 Key to Table 2:
 100.0 parts Evipol SH 5730 = PVC K value = 57
 5.0 parts BTA III N 2 = MBS modifier
 0.5 part Paraloid K 120 N = acrylate processing aid
 0.5 part Paraloid K 175 N = acrylate processing aid
 0.3 part Wax E = ester wax (based on montanic acid)
 3.0 parts ESO = epoxidized soybean oil
 1.0 part Loxiol G 16 = fatty acid partial ester of glycerol
 1.0 part Stabilizer 1 = 6-amino-1,3-di-n-butyluracil (= prior art)
 1.0 part Stabilizer 2 = 6-amino-1,3-diallyluracil
 1.0 part Stabilizer 5 = 6-amino-1,3-dibenzyluracil, as in Example 5
 1.0 part Stabilizer 6 = 6-amino-1,3-di-.beta.-phenethyl, as in Example 6
 1.0 part Stabilizer 4 = mixture of 6-amino-1-benzyl-3-n-butyluracil and
 6-amino-3-benzyl-1-n-butyluracil, as in Example 4
 The compositions of the invention show very good stability.
 EXAMPLE II
 Long-term Rolling Test (LRT)
 Explanation for Example A:
 A mixture consisting of:

100.0 parts of Solvic 264 GC = S-PVC K value 64
 26.0 parts of DOP = dioctyl phthalate (plasticizer)
 0.5 part of IRGAWAX 280 = bistearoylethylenediamine
 2.0 parts of commercial Ba/Zn stabilizer = Ba para-tertiary-butyl-
 benzoate + Zn oleate + phosphite + antioxidant + Ba-
 nonylphenol + solvent
 is rolled on a set of mixing rolls at a temperature of 190.degree. C. At
 intervals indicated in Table 3, samples with a thickness of 0.3 mm are cut
 and their Yellowness Index (YI) is determined in accordance with ASTM
 D-1925-70. The results are set out below in Table 3, Example A.
 Explanation for Example B:
 A mixture corresponding to that from Example A is rolled on a set of mixing
 rollers at a temperature of 190.degree. C. Over 15 minutes at intervals of
 5 minutes, a sample of 0.3 mm in thickness is cut (corresponds to
 pre-damaged PVC). After 15 minutes
 0.4 part of 6-amino-1,3-dibenzyluracil and
 0.2 part of a solution of 43% NaClO.sub.4 * H.sub.2 O in polyethylene
 glycol are added and rolling is continued. Samples of 0.3 mm in thickness
 are cut every 5 minutes thereafter. The Yellowness Index (YI) of all the
 samples is determined in accordance with ASTM D-1925-70.
 TABLE 3
 Time [min.] Example A Example B
 5 15.28 15.62
 10 31.56 33.48
 15 55.11 56.53
 20 77.00 38.90
 25 79.07 34.04
 30 74.57 33.15
 35 75.00 33.10
 It is found that, in the example in accordance with the invention,
 following the addition of the stabilizer combination, the YI after 5
 minutes is lower, which implies a significant lightening in color and an
 improvement in the stability.