US2740763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-forming solution of acrylonitrile polymer and reductively aminated polymer
Assignee: Solutia Inc
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Filing: 1952-03-07
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Granted: 1956-04-03
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Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:30
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/096; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A DYEABLE FIBER-FORMING COMPOSITION COMPRISING A CLEAR HOMOGENEOUS SOLUTION OF A BLEND OF 50 TO 98 PERCENT BY WEIGHT OF (A) A POLYMER OF AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE AND UP TO 20 PERENT OF ANOTHER MON-OLELFINIC MONOMER COPOLYMERIZABLE THEREWITH AND FROM 2 TO 50 PERCENT BY WEIGHT OF (B) A REDUCTIVELY AMINATED COPOLYMER OF AT LEAST 30 PERCENT BY WEIGHT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL KETONE, ISOPROPENYL METHYL KETONE, ALLYL METHYL KETONE AND VINYL PYRUVATE, AND UP TO 70 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N - DIMETHYLFORMAMIDE AND N.N - DIMETHYLACETAMIDE, SAID COPOLYMER (B) HAVING BEEN AMINATED BY REACTING IT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND PRIMARY AND SECONDARY ALIPHATIC AMINES.
Claim 2
Dependent Claim
138 words
A DYEABLE FIBER-FORMING COMPOSITION COMPRISING A CLEAR HOMOGENEOUS SOLUTION OF A BLEND OF 50 TO 98 PERCENT BY WEIGHT OF (A) A POLYMER OF AT LEAST 80 PERCENT BY WEIGHT OF ACRYLONITRILE AND UP TO 20 PERENT OF ANOTHER MON-OLELFINIC MONOMER COPOLYMERIZABLE THEREWITH AND FROM 2 TO 50 PERCENT BY WEIGHT OF (B) A REDUCTIVELY AMINATED COPOLYMER OF AT LEAST 30 PERCENT BY WEIGHT OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF METHYL VINYL KETONE, ISOPROPENYL METHYL KETONE, ALLYL METHYL KETONE AND VINYL PYRUVATE, AND UP TO 70 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, DISSOLVED IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF N,N - DIMETHYLFORMAMIDE AND N.N - DIMETHYLACETAMIDE, SAID COPOLYMER (B) HAVING BEEN AMINATED BY REACTING IT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND PRIMARY AND SECONDARY ALIPHATIC AMINES.
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) | 1959-04-03 | 1959-10-03 | 1960-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-03 | 1963-10-03 | 1964-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-03 | 1967-10-03 | 1968-04-03 | $7700.00 | Window Closed / Lapsed |