申请人:Mitsui Chemicals, Inc.
公开号:EP1640415A2
公开(公告)日:2006-03-29
The present invention relates to an olefinic thermoplastic elastomer composition which comprises a crystalline polyolefin resin(A), an ethylene-α-olefin-non-conjugated polyene copolymer rubber(B) and at least one rubber(C) selected from polyisobutylene, butyl rubber and a propylene-ethylene copolymer rubber having a propylene content of 50 mol% or more or an ethylene-α-olefin copolymer(D) having a density of 0.870 to 0.940 (g/cm3) and an ethylene content of 85 mol% or more, said ethylene-α-olefin-non-conjugated polyene copolymer rubber(B) being a crosslinked thermoplastic elastomer composition, being obtained by random copolymerization of ethylene, an α-olefin having 3 to 20 carbon atoms and a non-conjugated polyene in the presence of a metallocene catalyst, (1) containing the unit (a) derived from the ethylene and the unit (b) derived from the α-olefin in a molar ratio of 40/60 to 95/5 [(a)/(b)], (2) having an iodine value of 1 to 50 and (3) having an intrinsic viscosity [η] measured in decalin at 135°C of 1.0 to 10 dl/g; and relates to a method for manufacturing the same.
本发明涉及一种烯烃类热塑性弹性体组合物,它包括结晶聚烯烃树脂(A)、乙烯-α-烯烃-非共轭聚烯共聚物橡胶(B)和至少一种选自聚异丁烯、丁基橡胶和丙烯-乙烯共聚物橡胶(C)的橡胶(C),其丙烯含量为50摩尔%或以上,或乙烯-α-烯烃共聚物(D),其密度为0.870至0.940(g/cm3),乙烯含量为85摩尔%或以上。所述乙烯-α-烯烃-非共轭聚烯共聚物橡胶(B)是一种交联热塑性弹性体组合物,由乙烯、具有 3 至 20 个碳原子的α-烯烃和非共轭聚烯在茂金属催化剂存在下无规共聚而得、(1) 含有乙烯衍生的单元(a)和α-烯烃衍生的单元(b),摩尔比为 40/60 至 95/5 [(a)/(b)],(2) 碘值为 1 至 50,(3) 在癸醛中于 135℃测得的固有粘度[η]为 1.0 至 10 dl/g;并涉及制造这种物质的方法。