Copolymer Rubber, Rubber Composition and Rubber Mo
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专利名称：Copolymer Rubber, Rubber Composition and Rubber Molded Product
发明人：Kotaro Ichino,Masao Kunizane,Takashi
Hakuta
申请号：US11990139
申请日：20060809
公开号：US20100144997A1
公开日：
20100610
专利内容由知识产权出版社提供
摘要：The invention provides a copolymer rubber excellent in processability in kneading and processability in extrusion; rubber compositions containing the rubber; and crosslinked moldings of the compositions excellent in sealing properties and shape retention. A random copolymer rubber of ethylene (A), a Cα-olefin (B) and a nonconjugated polyene (C) which satisfies the following requirements (1) to (5): (1) the structural units (A) and (B) are contained at an (A)/(B) molar ratio of 40/60 to 95/5, (2) the structural unit (C) content is 0.01 to 5% by mole, (3) the limiting viscosity [η] is 1.0 to 5.0 dl/g as determined in decalin at 135° C., () the Mw/Mn is 1 to 8, and (5) the P value is 0.46 to 1.00 as defined by formula (1): P=Ln(limiting viscosity [η]−5.0×10×η*(10) (1) (wherein Ln is a natural logarithm; and η*() is a viscosity (Pa·sec) as determined at 190° C. and at 10 rad/sec).
申请人：Kotaro Ichino,Masao Kunizane,Takashi Hakuta
地址：Ichihara-shi JP,Sodegaura-shi JP,Sodegaura-shi JP
国籍：JP,JP,JP
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