Patent · US Expired

Prepregs containing a fiber and a thermoplastic polybenzazole copolymer matrix

US5248721A · kind A · utility

4Cited by

6References

19Claims

0Family size

Assignee

THE DOW CHEMICAL COMPANY · US

Inventors

Thuan P. Dixit · Midland, US
R. Giles Dillingham · Cincinnati, US
O. Carl Raspor · Saginaw, US

Key dates

Filing date	Mar 13, 1991
Grant date	Sep 28, 1993
Priority date	—
Expiry date	Mar 13, 2011

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2381/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

Fibers may be prepregged with a dope containing a thermoplastic polybenzazole block copolymer. The prepreg may be contacted with water or another nonsolvent to coagulate the polymer and form a matrix composite.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.