US2846416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of curing polyalkyleneether polyurethane polymers containing ethylenically unsaturated side chains
Assignee: EIDP Inc
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Filing: 1956-07-25
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Granted: 1958-08-05
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Robert G Arnold
- 👤 Clifton L Kehr
- 👤 John J Verbanc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:51
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/675; C08G18/70; C08G18/81; C08G18/8141; C08G18/815; C08G18/83; C08G18/87; Y; Y10; Y10S; Y10S528/00; Y10S528/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE PROCESS OF CURING A SULFUR-CURABLE POLYALKYLENEETHER POLYURETHANE POLYMER, SAID POLYMER HAVING A SIDE CHAIN AT LEAST ONCE FOR EVERY 8000 UNITS OF MOLECULAR WEIGHT OF POLYMER, SAID SIDE CHAIN CONTAINING A TERMINAL ALIPHATIC -CH=CH2 GROUP, WHICH COMPRISES INCORPORATING THEREWITH FOR EACH 100 PARTS BY WEIGHT OF POLYMER (A) FROM 0.5 TO 2.0 PARTS BY WEIGHT OF POLYMER 2.0 TO 4.0 PARTS BY WEIGHT OF 2,2''-DITHIOBISBENZOTHIAZOLE, AND (C) FROM 0.175 TO 1.75 PARTS BY WEIGHT OF A ZINC HALIDE COMPLEX SELECTED FROM THE GROUP CONSISTING OF A 1:1 MOLAR COMPLEX OF A ZINC HALIDE WITH 2,2''-DITHIOBISBENZOTHIAZOLE AND A 1:2 MOLAR COMPLEX OF A ZINC HALIDE WITH 2-MERCAPTOBENZOTHIAZOLE, WHEREIN THE ZINC HALIDE IS SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE, ZINC BROMIDE AND ZINC IODIDE, AND HEATING THE POLYMER TO A TEMPERATURE OF FROM ABOUT 100 TO 170*C. SO AS TO EFFECT A CURE.
Claim 2
Dependent Claim
144 words
THE PROCESS OF CURING A SULFUR-CURABLE POLYALKYLENEETHER POLYURETHANE POLYMER, SAID POLYMER HAVING A SIDE CHAIN AT LEAST ONCE FOR EVERY 8000 UNITS OF MOLECULAR WEIGHT OF POLYMER, SAID SIDE CHAIN CONTAINING A TERMINAL ALIPHATIC -CH=CH2 GROUP, WHICH COMPRISES INCORPORATING THEREWITH FOR EACH 100 PARTS BY WEIGHT OF POLYMER (A) FROM 0.5 TO 2.0 PARTS BY WEIGHT OF POLYMER 2.0 TO 4.0 PARTS BY WEIGHT OF 2,2''-DITHIOBISBENZOTHIAZOLE, AND (C) FROM 0.175 TO 1.75 PARTS BY WEIGHT OF A ZINC HALIDE COMPLEX SELECTED FROM THE GROUP CONSISTING OF A 1:1 MOLAR COMPLEX OF A ZINC HALIDE WITH 2,2''-DITHIOBISBENZOTHIAZOLE AND A 1:2 MOLAR COMPLEX OF A ZINC HALIDE WITH 2-MERCAPTOBENZOTHIAZOLE, WHEREIN THE ZINC HALIDE IS SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE, ZINC BROMIDE AND ZINC IODIDE, AND HEATING THE POLYMER TO A TEMPERATURE OF FROM ABOUT 100 TO 170*C. SO AS TO EFFECT A CURE.
References Cited (Backward Citations)
US2702797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |