US2964493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing halogenated copolymers by adding the stabilizers before compounding and curing the copolymers
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-02-26
•
Granted: 1960-12-13
•
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 13:29
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
Cited
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 |