Abstract: The disclosure is of a method for extending the molten stability of hydrocarbon resin tackified ethylene-vinyl acetate (EVAc) copolymers. One embodiment of the method comprises mixing a lithium salt in the adhesive compositions. The disclosure is also of EVAc-based hot-melt adhesive compositions prepared by the method of the invention and characterized in part by their stability in the molten state.

Abstract: A process for vulcanizing a rubber base comprising at least one halogen-containing amorphous polymer at a low temperature ranging from 5.degree. to 85.degree. C., which comprises carrying out the vulcanization in the presence of 0.01 to 20 parts by weight of an organic hydroperoxide and/or ketone peroxide per 100 parts by weight of the rubber base.In the above process, at least one member selected from the group consisting of (I) the oxides of metals, such as zinc, lead, chromium, cobalt, nickel, magnesium, manganese, copper and iron, or the metallic salts of said metals with aliphatic or cycloaliphatic carboxylic acid having 8 to 24 carbon atoms; (II) methacrylic esters; (III) maleimides; and (IV) oximes, may be used as a vulcanization activator or a vulcanization accelerator in an amount of 0.01 to 20 parts by weight per 100 parts by weight of the rubber base.

Abstract: A rubber composition and a process for the preparation of rubber compositions comprising, in the presence of a metal oxide, vulcanizing, or vulcanizing after blending with another unsaturated rubber, of the reaction product of (1) an unsaturated rubber, sulfur and a sulfur cleaving agent, (2) an unsaturated rubber and a mercaptan compound, (3) a halogenated unsaturated rubber and a metal salt of a sulfur cleaving agent, or (4) an unsaturated rubber, a sulfur cleaving agent and a compound having a functional group such as a nitrile oxide, a nitroso or a thionylamine.

Abstract: A method for protecting surfaces of objects or constructions that are exposed to surface-water against growth of biological origin by applying an antifouling coating layer onto these surfaces, which coating layer is formed from a paint formulation composing (a) one or more water-insoluble polymeric binders, (b) one or more water-soluble polymeric binders, (c) one or more sparingly water-soluble toxicants, optionally completed with other conventional materials, whereby the proportion of the components (a), (b) and (c) is such that the resulting coating layer when exposed to the surface water, wears off at such a rate that just sufficient toxicant is liberated to prevent fouling of the protected subject.

Abstract: A rubber composition and a process for the preparation of rubber compositions comprising, in the presence of a metal oxide, vulcanizing, or vulcanizing after blending with another unsaturated rubber, of the reaction product of (1) an unsaturated rubber, sulfur and a sulfur cleaving agent, (2) an unsaturated rubber and a mercaptan compound, (3) a halogenated unsaturated rubber and a metal salt of a sulfur cleaving agent, or (4) an unsaturated rubber, a sulfur cleaving agent and a compound having a functional group such as a nitrile oxide, a nitroso or a thionylamine.

Abstract: A novel coating composition useful in automobile refinish air-dry paint coating compositions. The novel coating composition comprises a blend of a maleic modified acrylic copolymer and an unsaturated polyether.

Abstract: High-impact polystyrene composition is produced by radical polymerization, e.g. bulk or bulk-suspension polymerization, of styrene having dissolved therein 2 to 20% by weight of one or more polybutadienes prepared by solution polymerization using an organic lithium compound as catalyst, said polybutadienes having (1) 1,2-vinyl content of more than 15 to 35% and cis-1,4 content of 20 to 85%, and (2) Mooney viscosity of 25 to 85, 5% styrene solution viscosity at 25.degree. C. being 50 to 200 cps and between 1.5 and 3.0 of the Mooney viscosity.