CYCLOOLEFIN COPOLYMER AND USE THEREOF

Japanese Patent JP3817015

B2

PROBLEM TO BE SOLVED: To obtain a cycloolefin copolymer having high heat insulating properties and a high clarity by selecting a cycloolefin copolymer comprising structural units derived from a linear or branched α-olefin, a cycloolefin, and an arom. vinyl compd. in a specified ratio and having a specified intrinsic viscosity.
SOLUTION: This copolymer is formed from 30-89 mol% 2-20C linear or branched α-olefin (A). 10-70 mol% cycloolefin (B) represented by formula I (wherein n and k are each 0 or 1; m is 0 or a positive integer; R1 to R18, Ra, and Rb are each H, halogen, etc. ; R15 to R18 may each form a mono- or polycyclic group; and R15 and R16 may combine with each other to form an alkylidene group, and so may R17 and R18) or formula II (wherein p and q are each 0, 1, or higher; r and s are each 0-2; R21 to R39 are each H, halogen, etc.; and when r=s=0, then R35 and R32 may combine with each other to form a mono- or polycyclic group, and so may R35 and R39), and 0.1-35 mol% arom. vinyl compd. (C). The copolymer has molar percentages satisfying the relation: 0.5×B≥C≥0.01×B and has an intrinsic viscosity [771 of 0.1-10 dl/g and a glass transition point (Tg) of 60-170°C.

Masaru Yamaguchi
Kazuyuki Takimoto

JP9574997A

August 30, 2006

April 14, 1997

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Mitsui Chemicals, Inc.
Chicona Game Beher

C08F210/00; G02C7/02; C08F10/02; C08F210/02; C08F212/00; C08F232/08; C08G61/08; G02B1/04; G02B6/00; C08F4/659; (IPC1-7): C08F210/00; C08F232/08; G02B1/04; G02B6/00; G02C7/02; //(C08F210/00; C08F232:08; C08F212:00)

JP61292601A
JP7292181A
JP1311109A
JP63045705A
JP2000502130A

Shunichiro Suzuki

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