US2787606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of acrylonitrile in the presence of preformed homopolymers
Assignee: Eastman Kodak Co
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Filing: 1952-10-21
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Granted: 1957-04-02
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Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Joseph B Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:21
CPC Classifications
C; C08; C08F; C08F267/00; C08F267/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A PROCESS FOR PREPARING RESINOUS COMPOSITION COMPRISING HEATING IN THE PRESENCE OF A PEROXIDE CATALYST AN AQUEOUS DISPERSION OF N-METHYL METHYL FUMARAMATE, UNTIL THE MONOMER HAS SUBSTANTIALLY COMPLETELY HOMOPOLYMERIZED, ADDING FROM 5 TO 95 PERCENT BY WEIGHT OF ACRYLONITRILE BASED ON THE COMBINED WEIGHTS OF THE OTHER MONOMER AND ACRYLONITRILE, AND HEATING THE REACTION MIXTURE UNTIL A SUBSTANTIAL AMOUNT OF THE ACRYLONITRILE HAS BEEN POLYMERIZED.
Claim 2
Dependent Claim
65 words
A PROCESS FOR PREPARING RESINOUS COMPOSITION COMPRISING HEATING IN THE PRESENCE OF A PEROXIDE CATALYST AN AQUEOUS DISPERSION OF N-METHYL METHYL FUMARAMATE, UNTIL THE MONOMER HAS SUBSTANTIALLY COMPLETELY HOMOPOLYMERIZED, ADDING FROM 5 TO 95 PERCENT BY WEIGHT OF ACRYLONITRILE BASED ON THE COMBINED WEIGHTS OF THE OTHER MONOMER AND ACRYLONITRILE, AND HEATING THE REACTION MIXTURE UNTIL A SUBSTANTIAL AMOUNT OF THE ACRYLONITRILE HAS BEEN POLYMERIZED.
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) | 1960-04-01 | 1960-10-01 | 1961-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-01 | 1964-10-01 | 1965-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-01 | 1968-10-01 | 1969-04-02 | $7700.00 | Window Closed / Lapsed |