THERMOPLASTIC ELASTOMER COMPOSITION EXCELLENT IN HEAT BONDABILITY

摘要

A partially crosslinked thermoplastic elastomer composition excellent in the heat bondability is obtained by dynamically heat-treating (i.e., kneading in a molten state) a blend of a peroxide-crosslinking olefin copolymer rubber and an olefinic plastic with an unsaturated epoxy monomer or an unsaturated hydroxy monomer in the presence of an organic peroxide. The peroxide-crosslinking olefin copolymer rubber is for example, ethylene/propylene rubber, ethylene/propylene/diene rubber and the olefinic plastic is for example polyethylene or polypropylene. The resulting partially crosslinked thermoplastic elastomer has improved heat-bondability to resins and to metals and may be used for producing molded articles.