Synergistic combinations of organic stabilizers for halogenated resins

Claim 2

A HALOGEN-CONTAINING RESIN COMPOSITION COMPRISING A RESIN SELECTED FROM THE GROUP CONSISTING OF CHLORINATED POLYETHYLENE, POLYVINYL HALIDES, POLYVINYLIDENE CHLORIDE AND COPOLYMERS OF VINYL CHLORIDE WITH COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMERS STABILIZED WITH FROM 0.1 TO 10 WEIGHT PERCENT OF A SYNERGISTIC COMBINATION OF (A) AN ORGANIC DIVALENT-SULFUR COMPOUND SELECTED FROM THE GROUP CONSISTING OF MERCAPTALS, MERCAPTOLS, MERCAPTANS, MERCAPTOCARBOXYLATES AND SULFIDES, SAID SULFIDES CONSISTING OF CARBON, OXYGEN, HYDROGEN AND SULFUR, AND (B) A MONO-HYDROCARBYLTIN COMPOUND CORRESPONDING TO THE FORMULA

Claim 3

The halogen-containing resin composition of claim 1 wherein the halogen-containing resin comprises at least 50 weight percent polyvinyl chloride.

Claim 4

The halogen-containing resin composition of claim 1 wherein the halogen-containing resin comprises at least 50 weight percent polyvinyl chloride and about 0.5 to 5 weight percent of the synergistic combination of (a) and (b).

Claim 5

The composition of claim 3 wherein (a) is poly (cyclohexylidene-1,1-bis (thiodiglycol mercaptopropionate)) and (b) is about 4 to 12 weight percent butyl stannoic acid based upon (a).

Claim 6

The composition of claim 3 wherein (a) is distearyl cyclohexylidene-1,1-bis (mercaptopropionate) and (b) is about 4 to 12 weight percent butyl stannoic acid based on (a).

Claim 7

The composition of claim 3 wherein (a) is dibutyl (cyclohexylidene-1,1-bis (mercaptopropionate)) and (b) is about 4 to 12 weight percent butyl stannoic acid based upon (a).

Claim 8

The composition of claim 3 wherein (a) is tetrathiobis (isooctyl acetate) and (b) is about 4 to 12 weight percent butylstannoic acid based on (a).

Claim 9

The composition of claim 3 wherein R is methyl.

Claim 10

The composition of claim 3 wherein (b) is methylstannoic acid.

Claim 11

The composition of claim 3 wherein (b) is methylthiostannoic acid.

Claim 12

A halogen-containing resin composition comprising a resin selected from the group consisting of chlorinated polyethylene, polyvinyl halides, polyvinylidene chloride and copolymers of vinyl chloride with copolymerizable ethylenically unsaturated monomers stabilized with from 0.1 to 10 weight percent of a synergistic combination of (a) a divalent-sulfur compound selected from the group consisting of dilauryl sulfide, dilauryl thiodipropionate, distearyl thiodipropionate, distearyl cyclohexylidene-1,1-bis (mercaptopropionate, dithio bis (stearyl propionate), dodecoxyethyl disulfide, benzoyl disulfide, tetrathio bis (isooctyl acetate), cyclohexanone bis-dodecyl thioketal, poly (ethylidene-bis (diethylene glycol mercaptopropionate)), poly(3,5-di-t-butyl-4-hydroxy benzylidene-bis (mercaptoethanol thiodipropionate)), poly (cyclohexylidene-1, 1-bis (thiodiglycol mercaptopropionate)), formaldehyde-bis-lauroyl thioacetal, benzaldehyde-bis-benzoylthioacetal and glyoxal-tetrakisacetyl thioacetal and (b) a monohydrocarbyl tin compound selected from the group consisting of monohydrocarbyl stannoic acIds, monohydrocarbyl thiostannoic acids, mixtures thereof, polymers of said stannoic acids, polymers of said thiostannoic acids, polymers of said mixtures, alkyl esters of said stannoic acids, alkyl esters of said thiostannoic acids and alkyl esters of said mixtures, and the amount of (b) present in said combination being about 1 to about 25 weight percent of the weight of (a).

Claim 13

A halogen-containing resin composition comprising a resin selected from the group consisting of chlorinated polyethylene, polyvinyl halides, polyvinylidene chloride and copolymers of vinyl chloride with copolymerizable ethylenically unsaturated monomers stabilized with from 0.1 to 10 weight percent of a synergistic combination of (a) a divalent-sulfur compound selected from the group consisting of dilauryl sulfide, dilauryl thiodipropionate, distearyl thiodipropionate, distearyl cyclohexylidene-1,1-bis (mercaptopropionate, dithio bis (stearyl propionate), dodecoxyethyl disulfide, benzoyl disulfide, tetrathio bis (isooctyl acetate), cyclohexanone bis-dodecyl thioketal, poly (ethylidene-bis (diethylene glycol mercaptopropionate)), poly(3,5-di-t-butyl-4-hydroxy benzylidene-bis (mercaptoethanol thiodipropionate)), poly (cyclohexylidene-1, 1-bis (thiodiglycol mercaptopropionate)), formaldehyde-bis-lauroyl thioacetal, benzaldehyde-bis-benzoylthioacetal and glyoxal-tetrakisacetyl thioacetal and (b) a monohydrocarbyl tin compound selected from the group consisting of monohydrocarbyl stannoic acIds, monohydrocarbyl thiostannoic acids, mixtures thereof, polymers of said stannoic acids, polymers of said thiostannoic acids, polymers of said mixtures, alkyl esters of said stannoic acids, alkyl esters of said thiostannoic acids and alkyl esters of said mixtures, and the amount of (b) present in said combination being about 1 to about 25 weight percent of the weight of (a).

Claim 14

The halogen-containing resin composition of claim 11 wherein the halogen-containing resin is polyvinyl chloride and the monohydrocarbyl tin compound is a monomethyl tin compound.

Claim 15

The halogen-containing resin composition of claim 11 wherein the halogen-containing resin is polyvinyl chloride and the monohydrocarbyl tin compound is methyl stannoic acid.

Claim 16

The halogen-containing resin composition of claim 11 wherein the halogen-containing resin is polyvinyl chloride and the monohydrocarbyl tin compound is selected from the group consisting of methyl stannoic acid, methyl thiostannoic acid, butyltin sulfide, butyltin oxide, n-octyl stannoic acid, isoctyl thiostannoic acid and the phenyl stannoic acid.

Claim 17

A halogen-containing resin composition comprising a resin selected from the group consisting of chlorinated polyethylene, polyvinyl halides, polyvinylidene chloride and copolymers of vinyl chloride with copolymerizable ethylenically unsaturated monomers stabilized with from 0.1 to 10 weight percent of a synergistic combination of (a) a divalent-sulfur compound selected from the group consisting of dilauryl sulfide, dilauryl thiodipropionate, distearyl thiodipropionate, dithio bis (stearyl propionate), benzoyl disulfide, tetrathio bis (isooctyl acetate), cyclohexanone bis-dodecyl thioketal, poly (ethylidene-bis (diethylene glycol mercaptopropionate)), poly (3,5-di-t- butyl-4-hydroxy benzylidene-bis- (mercaptoethanol thiodipropionate)), formaldehyde-bis-lauroyl thioacetal, benzaldehyde-bis-benzoylthioacetal and glyoxal-tetrakisacetyl thioacetal and (b) a monohydrocarbyl tin compound corresponding to the formula RSn(Z)n(Z''Y)3 2n wherein R is a hydrocarbyl group containing 1 to 12 carbon atoms, Z and Z'' are independently selected from the group consisting of oxygen and sulfur, Y is selected from the group consisting of -(CH2)xCOO alkyl, when n is O;

Claim 18

A halogen-containing resin composition comprising a resin selected from the group consisting of chlorinated polyethylene, polyvinyl halides, polyvinylidene chloride and copolymers of vinyl chloride with copolymerizable ethylenically unsaturated monomers stabilized with from 0.1 to 10 weight percent of a synergistic combination of (a) a divalent-sulfur compound selected from the group consisting of dilauryl sulfide, dilauryl thiodipropionate, distearyl thiodipropionate, dithio bis (stearyl propionate), benzoyl disulfide, tetrathio bis (isooctyl acetate), cyclohexanone bis-dodecyl thioketal, poly (ethylidene-bis (diethylene glycol mercaptopropionate)), poly (3,5-di-t- butyl-4-hydroxy benzylidene-bis- (mercaptoethanol thiodipropionate)), formaldehyde-bis-lauroyl thioacetal, benzaldehyde-bis-benzoylthioacetal and glyoxal-tetrakisacetyl thioacetal and (b) a monohydrocarbyl tin compound corresponding to the formula RSn(Z)n(Z''Y)3 2n wherein R is a hydrocarbyl group containing 1 to 12 carbon atoms, Z and Z'' are independently selected from the group consisting of oxygen and sulfur, Y is selected from the group consisting of -(CH2)xCOO alkyl, when n is O;

Claim 19

The halogen-containing resin composition of claim 15 wherein the halogen-containing resin is polyvinyl chloride and the monohydrocarbyl tin compound is methylthiostannoic acid.

Claim 20

The halogen-containing resin composition of claim 15 wherein the halogen-containing resin is polyvinyl chloride and the monohydrocarbyl tin compound is selected from the group consisting of di(butylsannoxy) maleate, di(butylstannoxy) malonate, poly(butyl stannoxy benzylidene-bis (mercaptopropionate)) and poly (butyl stannoxy cyclohexylidene-bis (thiopropionate)).