Abstract: Unsaturated hydantoin derivatives of the formula ##STR1## where R.sub.1 and R.sub.2 are alkyl, R.sub.3 is vinyl, allyl, alkylene, substituted alkylene or polyvalent aralkyl, R.sub.4 is vinyl or allyl and n is 1 to 3, are coagents for curing polymeric compositions to improve their physical, chemical and electrical properties. These coagents are particularly useful in crosslinking PVC, polyethylene, chlorinated polyethylene and poly(ethylene/vinyl acetate) compositions.

Abstract: Unsaturated hydantoin derivatives of the formula ##STR1## where R.sub.1 and R.sub.2 are alkyl, R.sub.3 is vinyl, allyl, alkylene, substituted alkylene or polyvalent aralkyl, R.sub.4 is vinyl or allyl and n is 1 to 3, are coagents for curing polymeric compositions to improve their physical, chemical and electrical properties. These coagents are particularly useful in crosslinking PVC, polyethylene, chlorinated polyethylene and poly(ethylene/vinyl acetate) compositions.

Abstract: Pyromellitic diimides of 3,5-dialkyl-4-hydroxyphenylsubstituted amines of this invention effectively stabilize organic materials against the effects of heat and oxygen. The diimides of this invention are prepared by reacting the appropriate 3,5-dialkyl-4-hydroxyphenylsubstituted amine with pyromellitic anhydride or pyromelletic diimide. An example of this class of stabilizer is N,N'-bis(3,5-di-t-butyl-4-hydroxyphenyl)pyromellitic diimide.

Abstract: Unsaturated hydantoin derivatives of the formula ##STR1## WHERE R.sub.1 and R.sub.2 are alkyl, R.sub.3 is vinyl, allyl, alkylene, substituted alkylene or polyvalent aralkyl, R.sub.4 is vinyl or allyl and n is 1 to 3, are coagents for curing polymeric compositions to improve their physical, chemical and electrical properties. These coagents are particularly useful in crosslinking PVC, polyethylene, chlorinated polyethylene and poly(ethylene/vinyl acetate) compositions.

Abstract: Monomeric esters of fumaric, maleic, citraconic, mesaconic, itaconic, aconitic, or methylene malonic acid and alcohols of the formula C.sub.m F2.sub.m+1 C.sub.n H2.sub.n OH and mercaptans of the formula C.sub.m F2.sub.m+1 C.sub.n H2.sub.n SH form homopolymers and form copolymers with other ethylenically unsaturated comonomers. The polymers obtained have valuable soil repellent properties and are especially useful in textile finishes. Preferred compounds are bis (1,1,2,2-tetrahydroperfluorononyl) fumarate and bis (1,1-dihydroperfluorooctyl) fumarate.

Abstract: Liquid perfluoroalkyl iodides are added to non-halogenated gaseous olefins or non-halogenated acetylenes in the presence of free radical generating catalysts to produce an additive reaction product essentially free of telomers. The gaseous olefin or acetylene is bubbled through liquid perfluoroalkyl iodide and catalyst at temperatures of 40.degree. to 220.degree. C and pressures no higher than atmosphere. Illustratively, ethylene is added to 1-iodoperfluoroheptane in the presence of benzoyl peroxide.

Abstract: Butadiene rubbers, such as polybutadiene, polyisoprene and thermoplastic SBR rubber are stabilized against oxidative and/or thermal degradation with thiodialkanoamidophenol compounds.

Abstract: 4-Aroylamido-2-alkyl-6-t-butylphenols can be prepared by reacting 2-alkyl-6-t-butyl-4-aminophenol with an aroylhalide. The products are useful as stabilizers of organic materials subject to thermal and ultraviolet light degradation and especially useful as butadiene rubber stabilizers.

Abstract: A compound of the formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently alkyl of 1 to 8 carbon atoms or cycloalkyl of 5 to 6 carbon atoms, R.sub.3 is hydrogen, lower alkyl of 1 to 4 carbon atoms or the group --SO.sub.2 (A.sub.2).sub.n R.sub.5, R.sub.4 and R.sub.5 are each independently alkyl of 1 to 18 carbon atoms or cycloalkyl of 5 to 12 carbon atoms, providing that R.sub.4 and R.sub.5 may each independently be hydrogen when n is 1, A.sub.1 and A.sub.2 are each independently phenyl, 1-naphthyl, 2-naphthyl, 2-(5,6,7,8-tetrahydro)naphthyl or p-phenylene, and n is 0 or 1 is prepared by reaction of a sulfonyl halide and a 2,6-substituted-4-aminophenol.The compounds are particularly effective in stabilizing unsaturated elastomeric compositions against oxidative degradation.

Abstract: Liquid perfluoroalkyl iodides are added to halogenated gaseous olefins in the presence of free radical generating catalysts. The gaseous olefin is bubbled through liquid perfluoroalkyl iodide and catalyst at temperatures of 50.degree. to 220.degree.C, and pressures no higher than atmospheric.

Abstract: Novel sulfur derivatives of dialkyl-4-hydroxyphenyltriazine were prepared which are stabilizers of organic material. Certain of these compounds can be prepared (1) by direct alkylation of 2,6-dialkylphenol with a 2,4-bis(alkylthio)-6-chloro-1,3,5-triazine compound; (2) by the reaction of an alkyl mercaptan with the appropriate 6(3',5'-dialkyl-4'-hydroxyphenyl)2,4-dichloro-1,3,5-triazine; or (3) by the reaction of an acid chloride of dialkylhydroxybenzoic acid with a mono or dialkyl substituted dithiobiuret. A typical embodiment of this invention is 6(3',5'-di-t-butyl-4'-hydroxyphenyl)-2,4-bis(n-octylthio)-1,3,5-triazine. The compounds of this invention are useful as stabilizers of organic materials which are subject to oxidative and thermal deterioration.