US3793260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting molding composition comprising high vinyl butadiene polymer
Assignee: BP Chemicals Ltd
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Filing: 1971-07-20
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Granted: 1974-02-19
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Expires: 1991-07-20
Abstract
Abstract THERMOSETTING MOULDING COMPOSITIONS COMPRISISNG HIGH VINYL BUTADIENE POLYMER, A FREE RADICAL INITIATOR AND AN ACRYLAMIDE COMPOUND HAVING THE GENERAL FORMULA H2C:CR1CONHR2 WHEREIN R1 ISHYDROGEN OR AN ORGANIC HYDROCARBON SUBSTITUENT AND R2 IS HYDROGEN OR AN ORGANIC SUBSTITUENT HAV IMPROVED RATES OF CURE AND THE THERMOSET PRODUCTS HAVE GOOD FLEXURAL STRENGTH. THE PREFERRED ACRYLAMIDE COMPOUNDS ARE ACRYLAMIDE ITSELF, METHACRYLAMIDE, N-PHENYL ACRYLAMIDE AND N,N1-METHYLENE BISACRYLAMIDE.
Inventors
- 👤 P Westermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:13
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08K; C08K5/00; C08K5/16; C08K5/20
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |