Olefinic thermoplastic elastomer sheet, process for...

C - Chemistry – Metallurgy – 08 – F

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C08F 8/44 (2006.01) B32B 25/04 (2006.01) C08J 5/18 (2006.01) C08L 23/08 (2006.01) C08L 23/26 (2006.01) C08L 51/06 (2006.01)

Patent

CA 2511589

An olefinic thermoplastic elastomer sheet which is equivalent to current olefinic thermoplastic elastomer sheets in rubber elasticity, flexibility, and fabrication quality and exhibits good mechanical characteristics, particularly excellent mar resistance; a process for producing the same; and laminates comprising the sheet as the surface layer. The sheet is made from an elastomeric material which comprises both an olefinic random copolymer obtained by copolymerizing ethylene with an .alpha.-olefin having 3 to 10 carbon atoms, an unsaturated monomer having a functional group, and, if necessary, a nonconjugated diene, and a metal ion for crosslinking the random copolymer.

L'invention concerne une feuille élastomère thermoplastique oléfinique qui est équivalente aux feuilles élastomères thermoplastiques oléfiniques actuelles en termes d'élasticité, de flexibilité et de qualité de production et ayant d'excellentes caractéristiques mécaniques notamment une excellente résistance. L'invention concerne également son procédé de production et des laminés comportant la feuille comme couche de surface. Cette feuille est constituée d'un matériau élastomère qui comprend à la fois un copolymère aléatoire oléfinique obtenu par copolymérisation d'éthylène avec un .alpha.-oléfine ayant 3 à 10 atomes de carbone, un monomère non saturé ayant un groupe fonctionnel et, si besoin, un diène non conjugué et un ion métallique pour la réticulation du copolymère aléatoire.

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