Title:
NORBORNENE BASED COPOLYMER AND SHEET OR FILM CONSISTING OF THE SAME COPOLYMER
Document Type and Number:
Japanese Patent JP3209562
Kind Code:
B2
Abstract:
PURPOSE: To obtain the transparent subject copolymer containing specific recurring units at a specific ratio, having each prescribed intrinsic viscosity and glass transition temperature, having excellent heat resistance and resistance to moisture absorption and useful for sheet, film, etc.
CONSTITUTION: The objective copolymer consisting of (A) 0.99-0.30 (molar ratio) recurring units expressed by formula I (R1 to R8 are H, 1-20C hydrocarbon, halogen, etc.; R5 and R7 together may form a ring) and (B) 0.01-0.70 (molar ratio) recurring units expressed by formula II (R9 is H or 1-20C hydrocarbon) and being 0.01-20dl/g in intrinsic viscosity [η] measured at 135°C in decalin and simultaneously satisfying formula III [(t) is molar ratio of the component A] in glass transition temperature (Tg).
Inventors:
Hiroshi Maezawa
Junichi Matsumoto
Junichi Matsumoto
Application Number:
JP8825892A
Publication Date:
September 17, 2001
Filing Date:
March 13, 1992
Export Citation:
Assignee:
IDEMITSU KOSAN CO.,LTD.
International Classes:
C08F210/00; C08F32/00; C08F232/08; C08J5/18; C08L45/00; (IPC1-7): C08F232/08; C08F210/00; C08J5/18
Domestic Patent References:
| JP3234709A | ||||
| JP345612A | ||||
| JP2173112A | ||||
| JP3234716A | ||||
| JP517526A | ||||
| JP4268312A |
Attorney, Agent or Firm:
Tokuro Kubota (1 outside)
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