Patent US3012015A successfully refreshed from Google Patents.
US3012015A
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Copolymers of acrylonitrile and sulfopropionyl substituted amides
Assignee: Kemanord AB
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Filing: 1959-03-16
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Granted: 1961-12-05
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Expires: 1979-03-16
Abstract
No abstract record available.
Inventors
- 👤 Sunden Olof
- 👤 Stenemur Stig Bertil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:16
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F220/46; C08F20/00; C08F20/62; C08F28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A COPOLYMER COMPRISING THE PRODUCT OBTAINED BY POLYMERIZING A MIXTURE CONTAINING AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND AN UNSATURATED SULFONATE SELECTED FROM THE GROUP CONSISTING OF N-ACRYLOYL-N''-SULFOPROPIONYL-METHYLENEDIAMINE, HEXAHYDRO-1,3-DIACRYLOYL-5-SULFOPROPIONYL-S-TRIAZINE, AND HEXAHYDRO-1-ACRYLOYL-3,5-DISULFOPROPIONYL-S-TRIAZINE, AND HYXAHYDRO-1-ACRYLOYL-3-SULFOPROPIONYL-5-AMINOPROPIONYL-S-TRIAZINE, WHEREIN THE AMOUNT OF SAID SULFONATE IS UP TO ABOUT 15 PERCENT BY WEIGHT OF THE MIXTURES.
Claim 2
Dependent Claim
51 words
A COPOLYMER COMPRISING THE PRODUCT OBTAINED BY POLYMERIZING A MIXTURE CONTAINING AT LEAST 85% BY WEIGHT OF ACRYLONITRILE AND AN UNSATURATED SULFONATE SELECTED FROM THE GROUP CONSISTING OF N-ACRYLOYL-N''-SULFOPROPIONYL-METHYLENEDIAMINE, HEXAHYDRO-1,3-DIACRYLOYL-5-SULFOPROPIONYL-S-TRIAZINE, AND HEXAHYDRO-1-ACRYLOYL-3,5-DISULFOPROPIONYL-S-TRIAZINE, AND HYXAHYDRO-1-ACRYLOYL-3-SULFOPROPIONYL-5-AMINOPROPIONYL-S-TRIAZINE, WHEREIN THE AMOUNT OF SAID SULFONATE IS UP TO ABOUT 15 PERCENT BY WEIGHT OF THE MIXTURES.
References Cited (Backward Citations)
US2615887A
Cited
US2615888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |