Title:
ALKYLIDENENORBORNENE POLYMER AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3185293
Kind Code:
B2
Abstract:
PURPOSE: To obtain the subject polymer excellent in heat resistance, light resistance, transparency and humidity resistance and useful as an optical material by using specified structural units as the principal component of its main chain.
CONSTITUTION: A structural unit of the formula (wherein R1 is alkyl; and R2 is H or R1) is used as the principal component of the main chain of an alkylidenenorbornene polymer.
Inventors:
Teiji Obara
Shinichiro Tahara
Yoshitsugu Hirokawa
Io Natsume
Shinichiro Tahara
Yoshitsugu Hirokawa
Io Natsume
Application Number:
JP32964291A
Publication Date:
July 09, 2001
Filing Date:
November 20, 1991
Export Citation:
Assignee:
Nippon Zeon Co., Ltd.
International Classes:
C08F32/00; C08F32/08; (IPC1-7): C08F32/08
Domestic Patent References:
| JP61143496A |