Biaxially oriented ordered polybenzothiazole film
US4939235A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 7, 1988 |
| Grant date | Jul 3, 1990 |
| Priority date | — |
| Expiry date | Jun 7, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2379/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates in general to the formation of thick films having a biaxial molecular orientation. Such films are prepared in accordance with the present invention from rod-like extended chain aromatic-heterocyclic ordered polymers. Such films have high tensile strength, modulus, and environmental resistance characteristics. PA1 A preferred ordered polymer for use in the present invention is poly (para - phenylenebenzo bisthiazole), (PBT), a compound having the structure: ##STR1## The present invention is also directed to methods and apparatus suitable for producing biaxially oriented films, coatings, and like materials from ordered polymers, preferably PBT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.