Patent US2964493A successfully refreshed from Google Patents.
US2964493A
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Stabilizing halogenated copolymers by adding the stabilizers before compounding and curing the copolymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-02-26
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Granted: 1960-12-13
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Expires: 1977-02-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Hakala
- 👤 John J Laffey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:24
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/36; C08K5/43; C08K5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR PREPARING A COPOLYMER OF 85 TO 99.5% OF A C4 TO C8 ISOOLEFIN WITH 15 TO 0.5% OF A C4 TO C14 MULTIOLEFIN CONTAINING AT LEAST ABOUT 0.5 WEIGHT PERCENT OF COMBINED HALOGEN IN ITS STRUCTURE WHICH HAS BEEN RECOVERED FROM A WATER SLURRY, THE IMPROVEMENT WHICH COMPRISES BLENDING SAID COPOLYMER WITH 0.05 TO 10.0 WT. PERCENT OF AN ORGANIC COMPOUND CONTAINING AN -NH- GROUP SELECTED FROM THE GROUP CONSISTING OF N-CYCLOHEXYL -I- BENZOTHIAZOLE SULFENAMIDE, DIPHENYL GUANIDINE, AND HEXAMETHYLENE TETRAMINE PRIOR TO RECOVERY FROM SAID SLURRY OF PROVIDED A COMPOLYMER THEREFROM STABILIZED AGENT GELATION, SAID STABILIZED HALOGENATED COPOLYMER BEING CAPABLE OF BEING SUBSEQUENTLY COMPOUNDED AND CURED.
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR PREPARING A COPOLYMER OF 85 TO 99.5% OF A C4 TO C8 ISOOLEFIN WITH 15 TO 0.5% OF A C4 TO C14 MULTIOLEFIN CONTAINING AT LEAST ABOUT 0.5 WEIGHT PERCENT OF COMBINED HALOGEN IN ITS STRUCTURE WHICH HAS BEEN RECOVERED FROM A WATER SLURRY, THE IMPROVEMENT WHICH COMPRISES BLENDING SAID COPOLYMER WITH 0.05 TO 10.0 WT. PERCENT OF AN ORGANIC COMPOUND CONTAINING AN -NH- GROUP SELECTED FROM THE GROUP CONSISTING OF N-CYCLOHEXYL -I- BENZOTHIAZOLE SULFENAMIDE, DIPHENYL GUANIDINE, AND HEXAMETHYLENE TETRAMINE PRIOR TO RECOVERY FROM SAID SLURRY OF PROVIDED A COMPOLYMER THEREFROM STABILIZED AGENT GELATION, SAID STABILIZED HALOGENATED COPOLYMER BEING CAPABLE OF BEING SUBSEQUENTLY COMPOUNDED AND CURED.
References Cited (Backward Citations)
US2631984A
Cited
US2698041A
Cited
US2720479A
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US2732354A
Cited
US2809372A
Cited
US2868764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |