Abstract: The present invention comprises a stabilized halogen containing polymer, preferably poly(vinyl halide), and more preferably poly(vinyl chloride) composition. A preferred polymer composition is a rigid halogenated polymer such as rigid poly(vinyl chloride). The composition contains at least one metal salt selected from the group consisting of at least one carboxylic acid or derivative thereof having at least two carboxyl groups, at least one carboxyl group and at least one hydroxyl group, at least one carboxyl group and at least one mercaptan, and an aromatic carboxylic acid having at least one carboxyl group. The metal salt is most preferably disodium adipate.

Abstract: The present invention is a method employing calcium phosphite as a light stabilizer and plate-out preventative for polyvinyl chloride. A composition of calcium phosphite and polyvinyl chloride is also disclosed.

Abstract: A synergistic composition of biocides for the preparation of anti-fouling paint preferably containing at least one of the group of 3-iodo-2-propynyl-butyl carbamate, 3-iodo-2-propynyl-cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, 3-iodo-2-propynylbenzyl carbamate, 3-iodo-2-propynyl propyl carbamate and 4-iodo-3-butynyl propyl carbamate and at least one of the group of tributyltin compounds consisting of bis(tributyltin) oxide, tributyltin fluoride, tributyltin methacrylate, tributyltin phosphate and tributyltin naphthenate. Said composition is more effective in protecting ship bottoms or underwater constructions than each component itself.

Abstract: Stabilizer compositions including blends of sodium perchlorate hydrate and calcium silicate are disclosed. Free flowing powder compositions of reduced hazard level including calcium silicate, non-absorbing diluent powder such as calcium carbonate, and a solution of sodium perchlorate in water are also disclosed. Vinyl halide compositions especially those used for motor vehicle components having improved long term stability at moderate aging temperatures of about 180.degree. F. to about 275.degree. F., and processes for preparing such compositions, are also disclosed.

Abstract: Vinyl halide resins can be stabilized by a stabilizer mixture of a monomeric tetrafunctional organotin stabilizer and a hindered tris phenol antioxidant, preferably 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butylphenyl)butane.

Abstract: Compounds of the formula I ##STR1## in which R is C.sub.8 -C.sub.14 alkyl, phenyl, C.sub.7 -C.sub.9 aralkyl or R"OOC-CH.sub.2 --CH.sub.2, R' is C.sub.2 -C.sub.18 alkyl, C.sub.5 -C.sub.12 cycloalkyl, phenyl, C.sub.7 -C.sub.30 alkaryl or C.sub.7 -C.sub.18 -aralkyl and R" is C.sub.1 -C.sub.14 alkyl, phenyl or C.sub.7 -C.sub.9 aralkyl and x is 1 or 2, are heat stabilizers for chlorine-containing thermoplastics, in particular for PVC.

Abstract: A composition comprising an admixture of (a) polybutylene terephthalate, (b) an impact modifying effective amount of an ABS or ABS type resin, and (c) a mold release and/or impact resistance improving effective amount of a fluid hydrogenated or non hydrogenated oligomer of an alpha olefin.

Abstract: The polyvinyl chloride resin composition of the invention is highly heat-resistant as a result of compounding with an organic tin mercaptide compound as a heat stabilizer but is still free from the problem of the unpleasant odor emitted by the mercaptide compound owing to a specific deodorizing agent compounded therewith so that the composition is suitable as a molding resin composition for food containers. The above mentioned deodorizing agent is a diterpenic acid such as abietic acid or a rosin which is a crude mixture of several kinds of diterpenic acids obtained as a natural product.

Abstract: Halogenated vinyl polymer compositions containing molybdenum smoke retardants and organotin compounds having an overall ratio of sulfur to tin of not more than 1.7 gram atoms of sulfur per gram atom of tin, typically from about 0.6 to about 1.7 and preferably from about 0.6 to about 0.9 gram atoms of sulfur per gram atom of tin.

Abstract: The polyvinyl chloride (PVC) resin-based composition of the invention gives a molded article which suffers little from the disadvantageous phenomenon of surface whitening as is sometimes unavoidable when a conventional PVC resin-made article is prolongedly kept under adverse conditions as in hot water or in a high-temperature, high-humidity atmosphere. The composition characteristically comprises a limited amount of a partially saponified polyvinyl alcohol having an average degree of polymerization of 150 to 600 and a degree of saponification of 20 to 55% as a special additive in an amount of 0.8 to 5.0% by weight based on the PVC resin. The resin composition is also less subject to the disadvantage of a decrease in the transparency of the resin articles even when the resin composition is compounded with a metal-containing heat stabilizer such as organotin mercaptides.

Abstract: An ion-sensitive composition and an ion-selective electrode is disclosed in which the ionophore is an organotin having the formulaR.sub.x.sup.1 Sn(SR.sup.2).sub.4-xorR.sub.y.sup.1 Sn(SR.sup.3 --X--R.sup.3 S).sub.4-y SnR.sup.1whereinx is 0 or an integer from 1 to 3;y is 2 or 3;each R.sup.1 independently is substituted or unsubstituted alkyl or substituted or unsubstituted aryl;each R.sup.2 independently is substituted or unsubstituted alkyl.each R.sup.3 independently is substituted or unsubstituted alkylene; and,X is a single chemical bond or a linking group.

Abstract: This invention relates to a styrenic polymer-based thermoplastic formulation containing a brominated cycloaliphatic flame retardant and a thermal stabilizer system comprising an organotin stabilizer, a hindered phenolic antioxidant and, optionally, a polyhydroxy aliphatic compound.

Abstract: Partial esters of saturated, linear C.sub.22 -C.sub.34 -monocarboxylic acids with polyols containing at least 3 carbon atoms and at least 2 hydroxyl groups are provided. The partial esters contain on average at least 1 free hydroxyl group and are generally obtained as mixtures of partial esters of at least 2 of said C.sub.22 -C.sub.34 -monocaroxylic acids. Particularly contemplated are partial esters based on montanic acids. The partial esters exhibit excellent release effects and transparency properties when used as release agents for plastics based on PVC or PVC copolymers.

Abstract: The invention relates to compositions comprising 20-80% of a vinyl chloride homopolymer (PVC) and 80-20% of at least one copolymer selected from the group consisting of polystyrene/polyethylene/butylene, acrylate/rubber, acrylate/rubber/styrene, acrylonitrile/styrene/acrylate, ABS, NBR, NAR, SAN, EVA and modified EVA, which compositions are stabilized with at least one tin compound of formula(n-C.sub.12 H.sub.25).sub.2 Sn[S(CH.sub.2).sub.n COOR].sub.2 (I) or(n-C.sub.12 H.sub.25)Sn[S(CH.sub.2).sub.n COOR.sup.1 ].sub.3 (II)or with a mixture of compounds of formulae I and II, wherein n is 1 or 2 and R and R.sup.1 are each independently of the other C.sub.6 -C.sub.18 alkyl. These compositions have improved heat storage properties and are particularly suitable for fabricating sheets and hollow bodies for use in the automotive industry.

Abstract: 1. A melt-processable fluorine-containing resin composition comprising:(A) a fluorovinyl ether-tetrafluoroethylene copolymer and(B) a thermal stabilizer in an amount of not less than 0.01 to less than 500 ppm of said copolymer (A). When using the composition of the present invention, the bubbles formation is not caused upon sintering and the obtained product is not colored.

Abstract: Chlorine-containing polymer containing (a) at least one compound of the formula I ##STR1## in which R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, phenyl or phenyl which is substituted by C.sub.1 -C.sub.4 -alkyl or halogen, n is 1 or 2 and, if n is 1, R is C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkyl which is substituted by --OH or --SH, C.sub.2 -C.sub.20 -alkyl which is interrupted by ##STR2## phenyl, phenyl which is substituted by C.sub.1 -C.sub.4 -alkyl, benzyl, benzyl which is substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl or --NR.sup.2 R.sup.3 in which R.sup.2 and R.sup.3 are identical or different and are as defined for R.sup.1, and, if n is 2, R is a direct bond, C.sub.1 -C.sub.10 -alkylene, C.sub.1 -C.sub.10 -alkylene which is substituted by phenyl, benzyl, --OH, C.sub.1 14 C.sub.4 -alkoxy, C.sub.1 -C.sub.20 -acyloxy, phenylsulfonyl or C.sub.1 -C.sub.4 -alkylsulfonyl or C.sub.2 -C.sub.10 -alkylene which is interrupted by ##STR3## in which R.sup.

Abstract: Compositions for stabilizing rigid (unplasticized) halogen-containing organic polymers against the deteriorative effects of heat, ultra-violet light and weathering comprise organotin or non-tin metal salt primary heat stabilizers in combination with esters of polyhydrocarbyl ether glycols.

Abstract: This invention is directed to an adhesive composition comprising:(a) a copolymer of ethylene or a mixture of ethylene and another ethylenically unsaturated polymerizable monomer with a hydroxyalkyl ester or an epoxyalkyl ester, and(b) an organometallic compound of lead, tin, or titanium.

Abstract: Unfavorable interaction is prevented between (a) electroconductive particle fillers and (b) organic resin binders of the type which are normally instable with respect to viscosity when aged in contact with said fillers. Moreover, electroconductivity degradation is also avoided. In a preferred mode of the invention, the particle surface is treated with a coating of an interfacial pacifying agent such as a tetravalent tin compound which both enhances the electroconductive performance of the particles and also is sufficiently compatible with the resin binder to migrate into the binder sufficiently to avoid undue gelling of the binder by particle-borne contamination or residues of such contamination.

Abstract: Dye salts of a mono- or polycationic dye where the anion conforms to a general formula (1) or (2)[Me (XCN).sub.4 ].sup.2(-) (1)[Me (SCN).sub.6 ].sup.n(-) (2)in whichMe in the formula (1) is the divalent zinc cation, the divalent iron cation, the divalent cobalt cation, the divalent tin cation or the divalent copper cation, andMe in the formula (2) stands for the divalent iron cation, the divalent nickel cation or the trivalent iron cation,X stands for an oxygen or sulfur atom andn depending on the valency of the corresponding metal cation, denotes the number 4 or 3.The novel dye salts can be obtained for example from aqueous solution or suspension by reacting the corresponding cationic dye which has a customary anion with a metal cation Me donor compound and an alkali metal thiocyanate or cyanate, alkaline earth metal thiocyanate or cyanate or ammonium thiocyanate or cyanate. They are used in particular in the spin-dyeing of acid-modified polyacrylonitrile and copolymers thereof.

Abstract: The invention provides an improved heat stabilization of post-chlorinated vinyl chloride polymers utilizing barium carbonate or cadmium carbonate that has a surface area greater than 2M.sup.2 /g.

Abstract: A high nitrile polymer composition resistant to gamma radiation comprising a high nitrile resin, a first stabilizer comprising at least one organotin compound selected from the group consisting of an organotin compound having the formulaR.sub.2 Sn(OOCCH.dbd.CHCOOR').sub.

Abstract: Compositions which are effective in stabilizing polymers against the deteriorative effects of heat are provided comprising (1) a mono-organotin compound or mixture of mono-organotin compounds, (2) a mercaptan-containing organic compound or mixture of mercaptan-containing organic compounds, and, optionally (3) a diorganotin compound or mixture of diorganotin compounds. Also provided are polymer compositions containing said stabilizers and articles of manufacture made from said stabilized polymer compositions.

Abstract: Mixture consisting of an organo-tin alcoholate of the formula (I) ##STR1## and of an organo-tin mercaptide of the formula (II) or (III) ##STR2## which mixture may additionally contain an organo tin carboxylate of the formula (IV) or (V) ##STR3## in which formulae R.sup.1 is C.sub.1 -C.sub.12 alkyl, R.sup.2 is C.sub.10 -C.sub.30 alkyl, phenyl which is substituted by one or two C.sub.8 -C.sub.12 alkyl groups, R.sup.3 has the meaning assigned to R.sup.2 or is the --Sn(OR.sup.2)(R.sup.1).sub.2 group, wherein R.sup.1 and R.sup.2 are as defined above, X is sulfur or oxygen, R.sup.4 is the --S--CH.sub.2 CH.sub.2 --COOR.sup.5 or --X--Sn(R.sup.1).sub.n (S--CH.sub.2 CH.sub.2 --COOR.sup.5).sub.3-n group, in which R.sup.1 and X are as defined above, R.sup.5 is C.sub.8 -C.sub.14 alkyl, n is 1 or 2, and R.sup.6 is c.sub.10 -C.sub.30 alkyl, the weight ratio of I:II or I:III being in the range from 9:1 to 1:9. These mixtures are stabilizers for chlorinated polymers and also activators for the manufacture of foamed plastics.

Abstract: Unfavorable interaction is prevented between (a) electroconductive particle fillers and (b) organic resin binders of the type which are normally instable with respect to viscosity when aged in contact with said fillers. Moreover, electroconductivity degradation is also avoided. In a preferred mode of the invention, the particle surface is treated with a coating of an interfacial pacifying agent such as a tetravalent tin compound which both enhances the electroconductive performance of the particles and also is sufficiently compatible with the resin binder to migrate into the binder sufficiently to avoid undue gelling of the binder by particle-borne contamination or residues of such contamination.

Abstract: Compositions comprising an organotin mercaptide, organotin sulfide, organotin carboxylate or mixtures thereof and a diester of an ethylenically unsaturated dicarboxylic acid having one carboxyl group on each carbon atom of the ethenylene group are useful for stabilizing halogen-containing organic polymers against the deteriorative effects of heat, light and weathering.

Abstract: This invention relates to stabilizer compositions for polymers comprising (1) an organotin compound, or mixture of organotin compounds, (2) a mercaptan-containing organic compound or mixture of mercaptan-containing organic compounds, and, optionally, (3) a halogen-containing tin compound or mixture of halogen-containing tin compounds, said stabilizers having a total halogen content of about 0.1% to about 10% by weight based on the weight of the stabilizer composition. This invention also relates to polymer compositions containing said stabilizers, to a process for stabilizing polymer by adding thereto said stabilizers, and to articles of manufacture, e.g. pipe, comprising a polymer and said stabilizers.

Abstract: A nonflammable electrospark machining solution which provides a high machining rate composed primarily of a saccharide such as cane sugar, fruit sugar or malt sugar with the density of saccharide being 5 to 55% by weight. A preservative may be added such as benzoic acid, salicylic acid, dehydroacetic acid or ethyl para-hydroxybenzoate with the latter being preferred in an amount of 0.01 to 0.1% by weight of the machining solution. Also, an anticorrosive such as sodium nitride, sodium polyphosphate, sodium dichromate, sodium silicate and triethanol amine is preferably added in an amount of 0.05 to 0.1% by weight of the machining solution.

Abstract: Rigid polyvinyl chloride containing reduced amounts of titanium dioxide and a tin mercaptide thermal stabilizer, said polyvinyl chloride being stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of benzoate compounds.

Abstract: Compositions which are effective in stabilizing polymers against the deteriorative effects of heat are provided comprising (1) an organic antimony compound or mixture of organic antimony compounds, (2) a mercaptan-containing organic compound or mixture of mercaptan-containing organic compounds, and (3) a metal mercaptoalcohol or mixture of metal mercaptoalcohols. Also provided are polymer compositions containing said stabilizers, a process for stabilizing polymers, and articles of manufacture made from stabilized polymer compositions.

Abstract: A process for the sterilization of objects made of polymers in which the molecule contains a halogen, or of products packaged in such polymer material, the polymer containing a heat stabilizer wherein, prior to irradiation of the object or the package and its contents, there is incorporated into the polymer one or more esters carrying at least one mercaptan function in the proportion of one --SH group for 3 to 10 carbon atoms.

Abstract: A composition comprising a dioctyl tin mercaptide, a zinc salt of a fatty acid such as zinc stearate and a conventional phosphite ester stabilizer is effective in stabilizing PVC resins. The stabilized resins exhibit excellent initial color and stability under processing conditions.

Abstract: Mixture consisting of an organo-tin alcoholate of the formula (I) ##STR1## and of an organo-tin mercaptide of the formula (II) or (III) ##STR2## which mixture additionally contains an organo-tin carboxylate of the formula (IV) or (V) ##STR3## in which formulae R.sup.1 is C.sub.1 -C.sub.12 alkyl, R.sup.2 is C.sub.10 -C.sub.30 alkyl, phenyl which is substituted by one or two C.sub.8 -C.sub.12 alkyl groups, R.sup.3 has the meaning assigned to R.sup.2 or is the --Sn(OR.sup.2)(R.sup.1).sub.2 group, wherein R.sup.1 and R.sup.2 are as defined above, X is sulfur or oxygen, R.sup.4 is the --S--CH.sub.2 CH.sub.2 --COOR.sup.5 or --X--Sn(R.sup.1).sub.n (S--CH.sub.2 CH.sub.2 --COOR.sup.5).sub.3-n group, in which R.sup.1 and X are as defined above, R.sup.5 is C.sub.8 -C.sub.14 alkyl, n is 1 or 2, and R.sup.6 is C.sub.10 -C.sub.30 alkyl, the weight ratio of I:II or I:III being in the range from 9:1 to 1:9. These mixtures are stabilizers for chlorinated polymers and also activators for the manufacture of foamed plastics.

Abstract: Blends of (a) a vinyl chloride polymer having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25.degree. C. falling within the range of about 1.50 to about 1.85; (b) a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride in which the relative proportions of said compound and said anhydride fall within the range of about 91 to about 70 weight percent of said compound and about 9 to about 30 weight percent of said anhydride; and (c) a tin-containing stabilizer and an impact modifier for vinyl chloride polymers. These blends contain 60 to 40 weight percent of (a) and 40 to 60 weight percent of (b) and have an Izod impact strength (ASTM D 256, Method A) of at least 0.5 foot pound per inch; a heat deflection temperature (ASTM D 648) at 66 psi of at least 75.degree. C.; and a dynamic thermal stability of at least 10 minutes.

Abstract: Compositions comprising an organotin mercaptide, organotin sulfide or mixtures thereof; a diester of an ethylenically unsaturated dicarboxylic acid having one carboxyl group on each carbon atom of the ethenylene group; and, optionally, an organotin carboxylate are useful for stabilizing halogen-containing organic polymers against the deteriorative effects of heat, light and weathering.

Abstract: A postchlorinated polyvinyl chloride composition having high processability for preparing molded products of outstanding properties comprises postchlorinated polyvinyl chloride and a copolymer of methyl methacrylate and a styrene monomer blended with the chloride. The composition has good thermal fluidity with good releasability from metal surface in processing and gives molded products of a high softening point and outstanding transparency.

Abstract: Compositions which are effective in stabilizing polymers against the deteriorative effects of heat are provided comprising (1) a mono-organotin compound or mixture of mono-organotin compounds, (2) a mercaptan-containing organic compound or mixture of mercaptan-containing organic compounds, and, optionally (3) a diorganotin compound or mixture of diorganotin compounds. Also provided are polymer compositions containing said stabilizers and articles of manufacture made from said stabilized polymer compositions.

Abstract: Compositions which are effective in stabilizing polymers against the deteriorative effects of heat are provided comprising (1) an organic tin compound or mixture of organic tin compounds, (2) an organic compound having an aromatic ring which is substituted with a hydroxyl (--OH) group and a mercapto (--SH) group ortho to each other, and, optionally, (3) an organotin mercaptide or mixture of organotin mercaptides. Also provided are polymer compositions containing said stabilizers and articles of manufacture made from said stabilized polymer compositions.

Abstract: Rigid polyvinyl chloride containing reduced amounts of titanium dioxide and a tin mercaptide thermal stabilizer, said polyvinyl chloride being stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of mono- and dibenzoate compounds.

Abstract: An organotin-containing composition for the stabilization of polymers or copolymers of vinyl chloride in which there is incorporated a stabilizing amount of an organotin compound containing at least two tin atoms and which is a mercapto, hydroxy or alkoxy substituted ester of a mercapto acid substituted organotin mercapto acid diester.

Abstract: A solid composition, suitable for stabilizing a halogen-containing polymer, consisting essentially of (a) 16.7 to 50% by weight of a liquid sulfur-containing organotin stabilizer, in intimate admixture with (b) 83.3 to 50% by weight of a solid lubricant, having a melting point of 50.degree. to 120.degree. C., selected from the group consisting of paraffin wax, montan wax, oxidized paraffin wax, oxidized polyethylene wax, oxidized and partially saponified polyethylene wax and mixtures thereof.

Abstract: An improved conductive molding composition for the preparation of high density capacitance electronic discs is disclosed. The disclosed compositions are improved by the replacement of most or all of the conventionally used stabilizer ingredient with a tin mercapto ester or alkyl mercaptide represented by the formulae ##STR1## wherein R is a straight-chain alkyl radical having 4 to 8 carbon atoms; R.sub.1 is selected from --S-CH.sub.2 -COOR.sub.3 and --S-R.sub.3 ;R.sub.2 is R or R.sub.1 ; andR.sub.3 is a straight-chain alkyl radical having from 8 to 18 carbon atoms.

Abstract: A thermoplastic molding composition having high Izod Impact and heat deflection temperature is disclosed. This composition contains in intimate admixture: a vinyl chloride polymer; a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride; as a first impact modifier, chlorinated polyethylene resin; and as a second impact modifier either a MBS impact modifier, an ABS impact modifier, a MABS impact modifier or a mixture thereof. This copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride can be rubber modified.

Abstract: Blends of (a) a vinyl chloride polymer having a relative viscosity as measured at a concentration of 1 gram per 100 grams of cyclohexanone at 25.degree. C. falling within the range of about 1.50 to about 1.85; (b) a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride in which the relative proportions of said compound and said anhydride fall within the range of about 91 to about 70 weight percent of said compound and about 9 to about 30 weight percent of said anhydride; and (c) a tin-containing stabilizer and an impact modifier for vinyl chloride polymers. These blends contain 60 to 40 weight percent of (a) and 40 to 60 weight percent of (b) and have an Izod impact strength (ASTM D 256, Method A) of at least 0.5 foot pound per inch; a heat deflection temperature (ASTM D 648) at 66 psi of at least 75.degree. C.; and a dynamic thermal stability of at least 10 minutes.

Abstract: A thermoplastic molding composition having good gloss and physical properties is disclosed. This composition contains in intimate admixture: a vinyl chloride polymer; a copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride; a styrene-maleic anhydride copolymer having a number average molecular weight within the range of from about 1000 to about 8000; and an alkyl diphenyl phosphite. The copolymer of a vinyl aromatic compound and an .alpha.,.beta.-unsaturated cyclic anhydride can be rubber modified.

Abstract: Vinyl chloride polymers suitable for use in food packaging materials are stabilized against discoloration and embrittlement resulting from exposure to heat using mono-n-octyltin compounds of the general formula H.sub.17 C.sub.8 Sn(SCH.sub.2 COOR').sub.3, wherein R' represents an alkyl radical containing eight carbon atoms.

Abstract: Compositions suitable for forming marine anti-fouling surface coatings comprise a polymer (e.g. maleinized polybutadiene) capable of cross-linking with amines, a hydrocarbyl polyisocyanate and a hydrocarbyl tin oxide or sulphide. The composition is preferably in two packs, which are combined on the surface to be coated, one pack containing the polymer and tin oxide or sulphide, and the other the polyisocyanate. A (thio) carbamate is formed as an intermediate which then hydrolyzes to an amine.A method of coating surfaces and surface coatings so produced are also claimed.

Abstract: The invention relates to a vinyl polymer composition suitable for outdoor use in the sunlight. The heat buildup in articles made from the composition is lowered without changing the ultraviolet protection or the color of the articles. This is accomplished by employing in the composition a black infrared reflecting pigment, such as a mixture of Cr.sub.2 O.sub.3 and Fe.sub.2 O.sub.3, and other infrared reflecting pigments.

Abstract: The process concerns stabilization of polymers against ionizing radiation where the polymer molecule contains a halogen. It comprises incorporating hydroquinone into the polymer, especially into polyvinyl chloride, the polymer containing both a metallic compound, heat stabilizer, and also a mercaptan.

Abstract: The heat stability of arylene sulfide resins, such as poly(p-phenylene sulfide) resin, is improved by the addition of cure retarders comprising certain organotin compounds such as the dialkyltin dicarboxylates. The resin compositions of the invention are particularly applicable for reducing gel formation during melt extrusion.