US 5075392
THERMOPLASTIC COMPOSITIONS CONTAINING POLYBENZOXAZOLE, POLYBENZOTHIAZOLE AND POLYBENZIMIDAZOLE MOIETIES
Assignee
DOW CHEMICAL COMPANY, THE, A CORP. OF DE
Filed
Mar 23, 1989
Granted
Dec 24, 1991
Location
MIDLAND MI US
Abstract
The present invention encompasses non-phase-separated thermoplastic block copolymers containing rigid rod PBZ blocks and thermoplastic PBZ blocks; dopes and compositions containing those block copolymers; a process for making shaped articles from thermoplastic block copolymers containing rigid rod PBZ blocks and thermoplastic PBZ blocks; and shaped articles made by that process.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Apr 17, 1990
Rescinded
Jul 12, 1990
Duration
2 months
Inventor
- 1WILLIAM J. HARRIS
Record Details
- Patent number
- US 5075392
- Application
- 07327926
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
DOW CHEMICAL COMPANY, THE, A CORP. OF DEBack to patent indexSource: USPTO 35 USC §181 secrecy order records