US3637602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resins from phenylene bisacrylic acid
Assignee: Celanese Corp
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Filing: 1967-11-13
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Granted: 1972-01-25
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Expires: 1987-11-13
Abstract
Abstract AN APPROXIMATELY EQUIMOLAR QUANITY OF AN AROMATIC DICARBOXYLIC ACID POSSESSING AT LEAST ONE NON-AROMATIC SIDE CHAIN HAVING A CARBON TO CARBON DOUBLE BOND IN CONJUGATION WITH THE AROMATIC NUCLEUS, OR AN ACID HALIDE DERIVATIVE THEREOF, IS CONDENSED WITH A PRIMARY OR A SECONDARY DIAMINE TO FORM A HIGH MELTING POLYAMIDE RESIN. THE POLYAMIDE RESIN POSSESSES IMPROVED PERFORMANCE PROPERTIES, AND IS PARTICULARLY SUITED FOR USE IN THE PRODUCTION OF FIBERS, AND AS A VEHICLE OR BINDER IN THE FORMATION OF HIGH TEMPERATURE RESIDTANT COMPOSITE ARTICLES.
Inventors
- 👤 Anthony B Conciatori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:49
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |