US3065211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for copolymerizing acrylonitrile and vinyl pyridine
Assignee: EIDP Inc
•
Filing: 1960-11-17
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Granted: 1962-11-20
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 George N Milford
- 👤 William K Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:35
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/08; C08F2/00; C08F2/12; C08F2/16; C08F20/42; C08F20/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN THE PROCESS OF POLYMERIZING AN ACRYLONITRILE COMPOSITION WHEREIN THE POLYMERIZABLE PORTION COMPRISES FROM ABOUT 85% TO 98% ACRYLONITRILE, FROM ABOUT 2% TO 10% OF A VINYLPYRIDINE, AND UP TO ABOUT 13% OF A NEUTRAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH SAID ACRYLONITRILE AND SAID VINYL PYRIDINE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF A CATALYZING AMOUNT OF A PEROXY CATALYST SELECTED FROM THE GROUP CONSISTING OF HYDROGEN PEROXIDE, ALKYL AND ARYL HYDROPEROXIDES, ACETYL AND TRIACETONE PEROXIDES, AND ALKALI METAL PERBORATES AND PERCARBONATES, AND AN ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF 1THIOGLYCEROL AND 1-THIOSORBITOL.
Claim 2
Dependent Claim
99 words
IN THE PROCESS OF POLYMERIZING AN ACRYLONITRILE COMPOSITION WHEREIN THE POLYMERIZABLE PORTION COMPRISES FROM ABOUT 85% TO 98% ACRYLONITRILE, FROM ABOUT 2% TO 10% OF A VINYLPYRIDINE, AND UP TO ABOUT 13% OF A NEUTRAL ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH SAID ACRYLONITRILE AND SAID VINYL PYRIDINE, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE POLYMERIZATION IN THE PRESENCE OF A CATALYZING AMOUNT OF A PEROXY CATALYST SELECTED FROM THE GROUP CONSISTING OF HYDROGEN PEROXIDE, ALKYL AND ARYL HYDROPEROXIDES, ACETYL AND TRIACETONE PEROXIDES, AND ALKALI METAL PERBORATES AND PERCARBONATES, AND AN ACTIVATOR SELECTED FROM THE GROUP CONSISTING OF 1THIOGLYCEROL AND 1-THIOSORBITOL.
References Cited (Backward Citations)
US2456360A
Cited
US2635090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |