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Title:
CYCLIC OLEFINIC COPOLYMER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3773546
Kind Code:
B2
Abstract:

PURPOSE: To efficiently obtain the subject copolymer excellent in low temperature characteristics such as low temperature impact resistance and suitable as a molding material for automotive external parts, etc., by copolymerizing ethylene, an α-olefin and a cyclic olefin in the presence of a specific catalyst.
CONSTITUTION: Ethylene, an α-olefin of formula I (Ra is 1-20C hydrocarbon) and cyclic olefin of formula II (Rb-Rm are H, 1-20C hydrocarbon, etc.,) (preferably norbornene) are copolymerized in the presence of a catalyst comprising a transition metal compound [preferably (cyclopentadienyl)trimethylzirconium], a compound forming an ion complex by the reaction with the above compound (preferably silver tetraphenyl borate and an organic Al compound (preferably triisobutylaluminum) to produce the objective copolymer comprising 5-99.8mol.wt. of the unit derived from ethylene, 0.1-75mol.% of the unit of formula III and 0.1-20mol.% of the unit of formula IV, and having an intrinsic viscosity [η]of 0.01-20dl/g and a glass transition temperature Tg of ≤20°C.


Inventors:
松本 淳一
前澤 浩士
宮川 知男
Application Number:
JP1992000073247
Publication Date:
May 10, 2006
Filing Date:
February 25, 1992
Export Citation:
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Assignee:
出光興産株式会社
International Classes:
C08F4/642; C08F210/02; C08F4/60; C08F4/659; C08F32/00; C08F210/00; C08F232/08; C08L23/00; C08L23/16; C08L45/00; (IPC1-7): C08F210/02; C08F4/642; C08F232/08
Domestic Patent References:
JP61221206A
JP2167318A
Attorney, Agent or Firm:
渡辺 喜平