Biaxially oriented ordered polymer films
US6132668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1990 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Nov 20, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/0079
- 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. 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.