Abstract: The present invention relates to a polymer resulting from the copolymerization of at least three monomers. From about 40 to 84 weight percent of the polymer is derived from a conjugated diolefin, from about 15 to 50 weight percent of the polymer is derived from a vinyl substituted aromatic compound and from about 1 to 8 weight percent of the polymer is derived from an olefinically unsaturated nitrile. These polymers may be added to a tread rubber stock for improved wet traction and improved abrasion resistance.

Abstract: The present invention relates to a polymer resulting from the copolymerization of at least three monomers. From about 40 to 84 weight percent of the polymer is derived from a conjugated diolefin, from about 15 to 50 weight percent of the polymer is derived from a vinyl substituted aromatic compound and from about 1 to 8 weight percent of the polymer is derived from an olefinically unsaturated nitrile. These polymers may be added to a tread rubber stock for improved wet traction and improved abrasion resistance.

Abstract: This invention relates to an improved continuous emulsion polymerization process for preparation of flame-retardant latex. Specifically, this invention relates to a novel method for the preparation of high solids, flame-retardant latex with high chlorine content in high conversion containing polymerized vinylidene chloride and at least one monoethylenically unsaturated carboxylic acid. The improved continuous polymerization process is characterized by continuous addition of all of the vinylidene chloride and all of the monoethylenically unsaturated carboxylic acid monomers along with a portion of the remaining monomers to a first reaction vessel followed by the subsequent continuous addition of the rest of the remaining monomers and additional surfactant solution to a second reaction vessel in a chain consisting of three or more reaction vessels. The flame-retardant latices produced by the process of the invention have improved physical and application properties.

Abstract: Interpolymers of alpha-olefins and nonconjugated alpha,omega-dienes are prepared by organoaluminum compound-transition metal compound catalysts modified with hexaalkylphosphoric triamides or organophosphate esters.

Abstract: Acrylonitrile is a monomer that is widely used in the synthesis of a vast variety of polymers. Undesirable quantities of unpolymerized residual acrylonitrile are often present in these acrylonitrile polymers. This residual or free acrylonitrile dissolved in an acrylonitrile polymer and/or its emulsifier system and the water phase used in its polymerization can be reduced significantly in concentration by treatment with saturated 6 to 7 membered ring heterocyclic amines. These amines react with acrylonitrile by a nitrogen-cyanoethylation reaction which results in the formation of a tertiary amino linkage.

Abstract: Acrylonitrile is a monomer that is widely used in the synthesis of a vast variety of polymers. Undesirable quantities of unpolymerized residual acrylonitrile are often present in these acrylonitrile polymers. This residual or free acrylonitrile dissolved in an acrylonitrile polymer and/or its emulsifier system and the water phase used in its polymerization can be reduced significantly in concentration by treatment with oximes. Oximes react with acrylonitrile by an oxygen-cyanoethylation reaction which results in the formation of a cyanoethyl oximino ether linkage.

Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with linear organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.

Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with cyclic organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.

Abstract: Interpolymers of alpha-olefins and nonconjugated alpha, omega-polyenes are prepared by organoaluminum compound-transition metal compound catalysts modified with hexaalkylphosphoric triamides or at least one compound of the formula Q=P(X Y).sub.3, wherein P is phosphorous, Q is oxygen or sulfur, X is oxygen or sulfur and Y is a hydrocarbon radical containing 1 to 20 carbon atoms.

Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with linear organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.

Abstract: New compositions and a process for the preparation of conjugated diene polymers of broadened molecular weight distribution by reacting non-terminated lithium catalyzed conjugated diene polymers with cyclic organic compounds selected from the group of carbonates, thiocarbonates and sulfites. The resulting new compositions are suitable for use in making high impact plastics and for fabricating rubber goods.

Abstract: There is disclosed a process for the preparation of gel-free rubbery copolymers of cyclopentene and dicyclopentadiene by means of a catalyst system comprising (A) a soluble tungsten halide or oxyhalide, (B) an organoaluminum compound, (C) an alcohol and (D) a polyhalogenated phenol.