US4426491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable physical mixtures and composites therefrom
Assignee: Union Carbide Corp
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Filing: 1980-06-23
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Granted: 1984-01-17
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Expires: 2000-06-23
Abstract
Abstract Described herein is a curable physical mixture comprising (a) an active hydrogen containing compound selected from a polyol, a polyamine, an amino alcohol, or mixtures thereof, (b) an unsaturated carboxylic anhydride, and (c) an ethylenically unsaturated monomer. These mixtures are cured to give a thermoset crosslinked composition.
Inventors
- 👤 Hugh C. Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:30
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/52; C08F; C08F290/00; C08F290/08; C08F299/00; C08F299/02; C08F299/026; C08G63/66; C08G63/668; C08G63/676
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
67 words
A process for producing a fiber reinforced rigid article containing 15 to about 80 weight percent of fibers which process comprises adding a curable physical mixture comprising an active hydrogen containing compound selected from a polyol, a polyamine, an amino alcohol, or mixtures thereof, (b) an unsaturated carboxylic anhydride, and (c) an ethylenically unsaturated monomer into a mold cavity containing said fiber and curing the components therein.
Claim 2
Dependent Claim
67 words
A process for producing a fiber reinforced rigid article containing 15 to about 80 weight percent of fibers which process comprises adding a curable physical mixture comprising an active hydrogen containing compound selected from a polyol, a polyamine, an amino alcohol, or mixtures thereof, (b) an unsaturated carboxylic anhydride, and (c) an ethylenically unsaturated monomer into a mold cavity containing said fiber and curing the components therein.
Claim 3
Dependent Claim
15 words
A process as in claim 1, wherein the active hydrogen containing compound is a polyol.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |