US2772250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers stabilized with salts of vinyl sulfonic acid
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-06-14
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Granted: 1956-11-27
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Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Robert J Slocombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42; C08K5/04; C08K5/09; C08K5/098; C08K5/49; C08K5/51; C08K5/53; C08K5/5317
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20% TO 100% OF ACRYLONITRILE AND UP TO 80% OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01% TO 10% OF A SALT OF VINYL SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF CALCIUM VINYL SULFONATE, MAGNESIUM VINYL SULFONATE, STRONTIUM VINYL SULFONATE, ALUMINUM VINYL SULFONATE AND SODIUM VINYL SULFONATE.
Claim 2
Dependent Claim
62 words
A STABLE ACRYLONITRILE POLYMER COMPRISING A POLYMER OF 20% TO 100% OF ACRYLONITRILE AND UP TO 80% OF ANOTHER MONOOLEFINIC MONOMER COPOLYMERIZED THEREWITH, SAID POLYMER CONTAINING INTIMATELY DISPERSED THEREIN FROM 0.01% TO 10% OF A SALT OF VINYL SULFONIC ACID SELECTED FROM THE GROUP CONSISTING OF CALCIUM VINYL SULFONATE, MAGNESIUM VINYL SULFONATE, STRONTIUM VINYL SULFONATE, ALUMINUM VINYL SULFONATE AND SODIUM VINYL SULFONATE.
References Cited (Backward Citations)
US2560053A
Cited
US2661345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |