US2676952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber spinning composition
Assignee: Solutia Inc
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Filing: 1949-10-22
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Granted: 1954-04-27
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Expires: 1969-10-22
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:57
CPC Classifications
C; C08; C08F; C08F220/00; C08F220/02; C08F220/42; C08F220/44; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD OF PREPARING A FIBER-FORMING COPOLYMER HAVING DYE-RECEPTIVITY COMPARABLE TO THAT OF NATURAL WOOL FIBERS, OF 85 TO 99% BY WEIGHT OF ACRYLONITRILE AND 1 TO 15% BY WEIGHT OF A TERITARY AMONO COMPOUND CONTAINING A POLYMERIZABLE VINYL SUBSTITUENT, WHICH COMPRISES DISSOLVING THE COPOLYMER IN AN ORGANIC SOLVENT THEREFOR AND CHEMICALLY REACTING THE COPOLYMER IN SAID SOLUTION WITH A NORMALLY LIQUID ALKYL HALIDE OF THE GROUP CONSISTING OF BROMIDES, CHLORIDES, AND IODIDES TO CONVERT SUBSTANTIALLY ALL OF THE TERTIARY AMINO GROUPS OF SAID COPOLYMER INTO QUATERNARY AMMONIUM SALTS.
Claim 2
Independent Claim
89 words
A METHOD OF PREPARING A FIBER-FORMING COPOLYMER HAVING DYE-RECEPTIVITY COMPARABLE TO THAT OF NATURAL WOOL FIBERS, OF 85 TO 99% BY WEIGHT OF ACRYLONITRILE AND 1 TO 15% BY WEIGHT OF A TERITARY AMONO COMPOUND CONTAINING A POLYMERIZABLE VINYL SUBSTITUENT, WHICH COMPRISES DISSOLVING THE COPOLYMER IN AN ORGANIC SOLVENT THEREFOR AND CHEMICALLY REACTING THE COPOLYMER IN SAID SOLUTION WITH A NORMALLY LIQUID ALKYL HALIDE OF THE GROUP CONSISTING OF BROMIDES, CHLORIDES, AND IODIDES TO CONVERT SUBSTANTIALLY ALL OF THE TERTIARY AMINO GROUPS OF SAID COPOLYMER INTO QUATERNARY AMMONIUM SALTS.
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) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |