C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 45/00 (2006.01) C08F 255/00 (2006.01) C08F 283/14 (2006.01) C08L 23/02 (2006.01) C08L 23/08 (2006.01) C08L 23/16 (2006.01)
Patent
CA 2114236
Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions. Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight. Such cycloolefin copolymer compositions as mentioned above are excellent in transparency and mechanical strength and also excellent particularly in impact resistance. In particular, when a cycloolefin elastomer obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms, a cycloolefin and a non-conjugated dime of 5-20 carbon atoms is used as the above-mentioned hydrocarbon elastomer component having a polymerizable double bond, the resulting copolymer compositions are excellent particularly in transparency.
Abe Yoshiharu
Sagane Toshihiro
Takata Toshimasa
Tsuji Yoichiro
Mitsui Chemicals Inc.
Smart & Biggar
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