Abstract: A method of crosslinking a rubber or plastic molding is described, which comprises irradiating the molding with electron beams to thereby limitedly crosslink only the surface of the molding. The molding thus-treated has excellent shape-sustaining properties and good surface appearance. Thus it is expected to find many applications in various fields.

Abstract: A thermally stable polyolefin resin improved in thermal processing by the incorporation therein of a phenolic compound represented by the general formula: ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.3 alkyl group, and a phosphite or phosphonite compound of 0.1 to 15 times by weight based on the phenolic compound.

Abstract: A butadiene polymer composition having incorporated the following stabilizers therein:A phenolic compound (I) of the formula: ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.4 alkyl group, and a sulfur-containing compound (II) represented by the general formula, ##STR2## wherein R.sub.2 and R.sub.3 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, and R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, wherein the weight ratio of (I) to (II) is 1 to 0.5-10. The butadiene polymer composition of the present invention is quite effective to prevent gel formation caused by heat, especially in the absence of oxygen.

Abstract: An adhesive composition comprising (1) a polyolefin having therein at least one repeating unit containing a carbonyl group and (2) at least one of calcium chloride, magnesium chloride or a mixture thereof.

Abstract: Polyolefin compositions comprising (I) crystalline polyolefin and (II) a mixture of inorganic fillers 5 to 45% by weight based on the total weight of said polyolefin and mixture, said mixture comprising (1) 40 to 95% by weight of a powder of a mixture of predominant calcium metasilicate and 0.2 to 20% by weight of calcium carbonate, said powder being in the long and narrow shape and more than 98% by weight thereof being passable through a 200-mesh Tyler's standard sieve, and (2) 60 to 5% by weight of hydrated magneium silicate powder which is passable through a 325-mesh Tyler's standard sieve.

Abstract: Elastomeric compositions comprising 1 part by weight of at least one curable elastomer and 0.01 to 100 parts by weight of at least one copolymer having olefin and acrylic ester monomer units as the main constituents, which possess improved properties in tackiness, processability, oil resistance, thermal resistance, weathering resistance and the like.