MANUFACTURE OF IMPROVED HIGH MOLECULAR WEIGHT POLYBENZOIMIDAZOLE

Title:

MANUFACTURE OF IMPROVED HIGH MOLECULAR WEIGHT POLYBENZOIMIDAZOLE

Document Type and Number:

Japanese Patent JPS5927922

Kind Code:

A

Abstract:

This invention provides a single stage melt polymerization process for the production of an improved type of high molecular weight polybenzimidazole, which involves the use of a tin-containing polymerization catalyst. The process provides poly-2,2'-(m-phenylene)-5,5'-bibenzimidazole of improved color and Plugging Value, and is further characterized by an Inherent Viscosity of at least about 0.5 dl/g, and a weight average molecular weight of at least about 100,000.

Inventors:

YUU UON CHIYOO
ANSONII BII KONSHIATORI

Application Number:

JP12957983A

Publication Date:

February 14, 1984

Filing Date:

July 18, 1983

Export Citation:

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Assignee:

CELANESE CORP

International Classes:

C08G73/18; C08G73/00; (IPC1-7): C08G73/18

Attorney, Agent or Firm:

Shoichi Hirose

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