US3824201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maturated polyester polyurethane compositions
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1973-04-11
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Granted: 1974-07-16
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Expires: 1993-04-11
Abstract
Abstract A MOLDABLE FIBER-FILLED MATURED THERMOSETTING POLYESTER RESIN-CONTAINING COMPOSITION IS ACHIEVED BY REACTING (A) A HYDROXY-TERMINATED, POLYESTER RESIN HAVING A HYDROXY FUNCTIONALITY OF BETWEEN 3.0 AND 1.8 IN A STANDARD MOLDING FORMULATION WITH (B) A POLYISOCYANATE IN AN AMOUNT OF AT LEAST ABOUT 85% BUT NOT MORE THAN 99% OF THE QUANTITY NECESSARY TO CAUSE THE RESIN TO REACH ITS GEL POINT AND IN CONTACT WITH (C) A SUITABLE CATALYST FOR THE REACTION OF ISOCYANATE AND HYDROXYL GROUPS, (D) AN ALIPHATOCALLY-UNSATURATED MONOMER AND A FREE RADICAL POLYMERIZATION CATALYST.
Inventors
- 👤 F Mcgranaghan
- 👤 H Shanoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:29
CPC Classifications
C; C08; C08L; C08L75/00; C08L75/04; C08L75/14; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/68; C08L75/06
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |