US3151184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymers of polybutadiene and a monoaryl substituted vinylidene compound and process for producing same
Assignee: General Electric Co
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Filing: 1956-03-27
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Granted: 1964-09-29
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Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Moyer M Safford
- 👤 Robert L Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:48
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F36/00; C08F36/02; C08F36/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE PROCESS OF PREPARING A GRAFT COPOLYMER OF POLYBUTADIENE WHICH COMPRISES HEATING, TO A TEMPERATURE OF FROM 60*-150*C., A MIXTURE OF A POLYBUTADIENE GUM PREPARED BY THE BULK POLYMERIZATION OF BUTADIENE WITH AN AKLALI METAL, SAID GUM CONTAINING AT LEAST 30% 1,2-POLYBUTADIENE AND HAVING AN INTRINSIC VISCOSITY OF AT LEAST 1, (2) A MONOARYL-SUBSTITUTED VINYLIDENE COMPOUND, AND (3) FROM 0.5 TO 6% BASED ON THE WEIGHT OF (1) AND (2) OF DI-A-CUMYL PEROXIDE TO GRAFT POLYMERIZE THE MONOARYLSUBSTITUTED VINYLIDENE COMPOUND TO THE POLYBUTADIENE AND THEREAFTER CURING THE COPOLYMER AT A TEMPERATURE OF 150*C. UP TO THE DECOMPOSITION POINT OF THE COPOLYMER.
Claim 2
Dependent Claim
101 words
THE PROCESS OF PREPARING A GRAFT COPOLYMER OF POLYBUTADIENE WHICH COMPRISES HEATING, TO A TEMPERATURE OF FROM 60*-150*C., A MIXTURE OF A POLYBUTADIENE GUM PREPARED BY THE BULK POLYMERIZATION OF BUTADIENE WITH AN AKLALI METAL, SAID GUM CONTAINING AT LEAST 30% 1,2-POLYBUTADIENE AND HAVING AN INTRINSIC VISCOSITY OF AT LEAST 1, (2) A MONOARYL-SUBSTITUTED VINYLIDENE COMPOUND, AND (3) FROM 0.5 TO 6% BASED ON THE WEIGHT OF (1) AND (2) OF DI-A-CUMYL PEROXIDE TO GRAFT POLYMERIZE THE MONOARYLSUBSTITUTED VINYLIDENE COMPOUND TO THE POLYBUTADIENE AND THEREAFTER CURING THE COPOLYMER AT A TEMPERATURE OF 150*C. UP TO THE DECOMPOSITION POINT OF THE COPOLYMER.
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-29 | 1968-03-30 | 1968-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-29 | 1972-03-30 | 1972-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-29 | 1976-03-30 | 1976-09-29 | $7700.00 | Window Closed / Lapsed |