Patent US3236798A successfully refreshed from Google Patents.
US3236798A
Expired / Lapsed
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Film-forming acrylonitrile polyer latex and method for preparing same
Assignee: Standard Oil Co
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Filing: 1962-10-15
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Granted: 1966-02-22
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 William R Dunnavant
- 👤 Ruth A Botham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:47
CPC Classifications
C; C08; C08F; C08F265/00; C08F265/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS FOR PREPARING A STABLE LATEX OF A FILMFORMING POLYMER COMPRISING (A) POLYMERIZING IN AN AQUEOUS MEDIUM A MONOMERIC CONSTITUENT CONTAINING FROM 70 TO 95% OF ACRYLONITRILE AND FRO 30 TO 5% BY WEIGHT OF AT LEAST ONE OTHER OLEFINICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH ACRYLONITRILE AND THEN (B) POLYMERIZING IN ADMIXTURE WITH THE POLYMER RESULTING FROM (A) A MONOMERIC CONSTITUENT COMPRISING A MAJOR PROPORTION OF AT LEAST ONE MONOMER HAVING THE STRUCTURE CH2=CHCOOR WHEREIN R IS AN ALKYL GROUP HAVING FROM 2 TO 4 CARBON ATOMS TO PRODUCE A FINAL POLYMERIC PRODUCT CONTAINING FROM ABOUT 40 TO 60% BY WEIGHT OF POLYMERIZED ACRYLONITRILE.
Claim 2
Dependent Claim
104 words
THE PROCESS FOR PREPARING A STABLE LATEX OF A FILMFORMING POLYMER COMPRISING (A) POLYMERIZING IN AN AQUEOUS MEDIUM A MONOMERIC CONSTITUENT CONTAINING FROM 70 TO 95% OF ACRYLONITRILE AND FRO 30 TO 5% BY WEIGHT OF AT LEAST ONE OTHER OLEFINICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH ACRYLONITRILE AND THEN (B) POLYMERIZING IN ADMIXTURE WITH THE POLYMER RESULTING FROM (A) A MONOMERIC CONSTITUENT COMPRISING A MAJOR PROPORTION OF AT LEAST ONE MONOMER HAVING THE STRUCTURE CH2=CHCOOR WHEREIN R IS AN ALKYL GROUP HAVING FROM 2 TO 4 CARBON ATOMS TO PRODUCE A FINAL POLYMERIC PRODUCT CONTAINING FROM ABOUT 40 TO 60% BY WEIGHT OF POLYMERIZED ACRYLONITRILE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |