Patent US2941972A successfully refreshed from Google Patents.
US2941972A
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Solutions of acrylonitrile polymer in chloral hydrate solvent and process for making same
Assignee: Solutia Inc
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Filing: 1957-12-30
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Granted: 1960-06-21
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Witt Hobson D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:40
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08L; C08L33/00; C08L33/18; C08L33/20; C08J2333/00; C08J2333/18; C08J2333/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A NEW COMPOSITION OF MATTER COMPRISING A SOLUTION OF A POLYMER CONTAINING AT LEAST 80 PERCENT OF ACRYLONITRILE AND UP TO 20 PERCENT OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH IN A SOLVENT CONSISTING OF 10 TO 50 PERCENT, BASED ON THE TOTAL WEIGHT OF THE SOLVENT, OF CHLORAL HYDRATE AND 50 TO 90 PERCENT, BASED ON THE TOTAL WEIGHT OF THE SOLVENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) A CYCLIC ALKYLENE CARBONATE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE ALKYLENE RADICAL AND (II) A DINITRILE SELECTED FROM THE GROUP CONSISTING OF SUCCINONITRILE AND MALONONITRILE.
Claim 2
Dependent Claim
101 words
A NEW COMPOSITION OF MATTER COMPRISING A SOLUTION OF A POLYMER CONTAINING AT LEAST 80 PERCENT OF ACRYLONITRILE AND UP TO 20 PERCENT OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH IN A SOLVENT CONSISTING OF 10 TO 50 PERCENT, BASED ON THE TOTAL WEIGHT OF THE SOLVENT, OF CHLORAL HYDRATE AND 50 TO 90 PERCENT, BASED ON THE TOTAL WEIGHT OF THE SOLVENT, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (I) A CYCLIC ALKYLENE CARBONATE CONTAINING FROM 2 TO 4 CARBON ATOMS IN THE ALKYLENE RADICAL AND (II) A DINITRILE SELECTED FROM THE GROUP CONSISTING OF SUCCINONITRILE AND MALONONITRILE.
References Cited (Backward Citations)
US2698842A
Cited
US2752320A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |