US3583955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Saturated linear polymers having pendant functionality
Assignee: SMC Corp
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Filing: 1969-02-11
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Granted: 1971-06-08
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Expires: 1989-02-11
Abstract
Abstract A CLASS OF POLYMERS COR PRISING AN ESTER-FREE BACKBONE HAVING PENDANT THEREFROM THROUGH ESTER LINKAGE A PLURALITY OF ETHYLENICALLY UNSATURATED GROUPS WHICH ARE POLYMERIZABLE WITH VINYL MONOMERS FOR THERMOSETTING PURPOSES UNDER THE INFLUENCE OF FREE RADICAL CATALYSIS IS DESCRIBED ALONG WITH PROCESSES FOR PREPARING THE POLYMERS. POLYMERS FALLING WITHIN THE SCOPE OF THIS INVENTION ARE ADVANTAGEOUS IN THAT, WHEN THERMOSET, THEY PRODUCE SHAPED BODIES OR OBJECTS WHICH HAVE CONTROLLED PHYSICAL PROPERTIES (E.G., MECHANICAL STRENGTH AND FLEXIBILITY) AND WHICH ALSO HAVE INCREASED SOLVENT, ACID AND ALKALI RESISTANCE OVER SHAPED OBJECTS PREPARED FROM CONVENTIONAL POLYESTER POLYMERS.
Inventors
- 👤 Donald F Holicky
- 👤 Kenneth G Hahn
- 👤 Robert C Gasman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:12
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14; C08F2810/00; C08F2810/20; C08F2810/30
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |