Title:
BLOCK COPOLYMER CONTAINING BLOCK OF POLYBENZAZOLE POLYMER
Document Type and Number:
Japanese Patent JP3430423
Kind Code:
B2
Abstract:
PURPOSE: To obtain a block copolymer containing polybenzazole blocks and blocks of polybenzoxazinone polymers or polyoxadiazole polymers, which does not show any substantial phase separation and exerts a high heat-stability.
CONSTITUTION: A block copolymer containing polybenzazole blocks and blocks of polybenzoxazinone polymers or polyoxadiazole polymers is coagulated from an isotropic dope to form a molded article of a granular composition. The granular composition may be compression molded to form a molded article. This block copolymer may be molded at a high temperature without substantial phase separation, and the polybenzazole polymer provides a support which improves the tensile property of the polymer.
Inventors:
William Jay Harris
Application Number:
JP26359393A
Publication Date:
July 28, 2003
Filing Date:
October 21, 1993
Export Citation:
Assignee:
TOYO BOSEKI KABUSHIKI KAISHA
International Classes:
C08G73/06; C08G73/08; C08G73/22; C08G73/00; (IPC1-7): C08G73/06; C08G73/00; C08G73/22
Domestic Patent References:
| JP57162752A | ||||
| JP63210138A | ||||
| JP641761A | ||||
| JP37732A | ||||
| JP466868Y1 | ||||
| JP3501751A | ||||
| JP5508683A | ||||
| JP6503597A |
Attorney, Agent or Firm:
Takashi Ishida (3 others)