US3396153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfo-nu-alkylpropionamide salts as emulsifying agents in polymerization of unsaturated compounds
Assignee: Wyeth Holdings LLC
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Filing: 1963-11-05
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Granted: 1968-08-06
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Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Vitalis Emil Alfred
- 👤 Chamberlain Ralph Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:56
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENICALLY UNSATURATED SUBSTANTIALLY WATER INSOLUBLE COMPOUNDS IN AN AQUEOUS MEDIUM IN THE PRESENCE OF AN AMMONIUM OR ALKALI METAL SALT OF SULFO-N-ALKYLPROPIONAMIDE PREPARED BY SULFONATING AN N-ALKYLACRYLAMAIDE RESULTING FROM REACTING AN A-UNSATURATED NITRILE AND AN OLEFIN IN THE PRESENCE OF A CATIONOID SUBSTANCE AND THEREAFTER HYDROLYZING TO SAID N-ALKYLACRYLAMIDE, WHEREI THE ALKYL GROUP OF SAID SALT IS BRANCHED CHAIN AND CONTAINS AT LEAST 10 CARBON ATOMS.
Claim 2
Dependent Claim
71 words
A PROCESS WHICH COMPRISES POLYMERIZING ETHYLENICALLY UNSATURATED SUBSTANTIALLY WATER INSOLUBLE COMPOUNDS IN AN AQUEOUS MEDIUM IN THE PRESENCE OF AN AMMONIUM OR ALKALI METAL SALT OF SULFO-N-ALKYLPROPIONAMIDE PREPARED BY SULFONATING AN N-ALKYLACRYLAMAIDE RESULTING FROM REACTING AN A-UNSATURATED NITRILE AND AN OLEFIN IN THE PRESENCE OF A CATIONOID SUBSTANCE AND THEREAFTER HYDROLYZING TO SAID N-ALKYLACRYLAMIDE, WHEREI THE ALKYL GROUP OF SAID SALT IS BRANCHED CHAIN AND CONTAINS AT LEAST 10 CARBON ATOMS.
References Cited (Backward Citations)
US2933467A
Cited
US2963459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |