Patent US2370423A successfully refreshed from Google Patents.
US2558735A
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Method of forming dyed shaped articles from acrylonitrile polymerization products
Assignee: Wyeth Holdings LLC
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Filing: 1950-08-30
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Granted: 1951-07-03
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Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Cresswell Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:20
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/702; D01; D01F; D01F6/00; D01F6/02; D01F6/18; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
THE METHOD OF PRODUCING A DYED, SHAPED PRODUCT FROM A SOLUBLE, THERMOPLASTIC PRODUCT OF POLYMERIZATION OF A POLYMERIZABLE MASS COMPRISING MAINLY ACRYLONITRILE, SAID METHOD COMPRISING PRECIPITATING THE SAID POLYMERIZATION PRODUCT IN APPROXIMATELY ITS DESIRED SHAPE FROM A WATERCOAGULABLE SOLUTION THEREOF BY CONTACTING THE LATTER WITH A LIQUID COAGULANT COMPRISING WATER, SAID COAGULANT BEING AT A TEMPERATURE NOT EXCEEDING +10* C. AND SAID POLYMERIZATION PRODUCT BEING DISSOLVED IN A CONCENTRATED AQUEOUS SOLUTION OF A WATER-SOLUBLE SALT WHICH YIELDS HIGHLY HYDRATED IONS IN AQUEOUS SOLUTION THEREBY TO OBTAIN A SHAPED, TOUGH, DYEABLE GEL WHICH CAN BE MOLECULARLY ORIENTED BY WET STRETCHING AND WHICH HAS BETTER DYE RECEPTIVITY AND WHICH WHICH THE GEL STRUCTURE HAS BEEN DESTROYED; DYEING THE SAID TOUGH, DYEABLE GEL; AND DRYING THE DYED GEL.
Claim 2
Independent Claim
125 words
THE METHOD OF PRODUCING A DYED, SHAPED PRODUCT FROM A SOLUBLE, THERMOPLASTIC PRODUCT OF POLYMERIZATION OF A POLYMERIZABLE MASS COMPRISING MAINLY ACRYLONITRILE, SAID METHOD COMPRISING PRECIPITATING THE SAID POLYMERIZATION PRODUCT IN APPROXIMATELY ITS DESIRED SHAPE FROM A WATERCOAGULABLE SOLUTION THEREOF BY CONTACTING THE LATTER WITH A LIQUID COAGULANT COMPRISING WATER, SAID COAGULANT BEING AT A TEMPERATURE NOT EXCEEDING +10* C. AND SAID POLYMERIZATION PRODUCT BEING DISSOLVED IN A CONCENTRATED AQUEOUS SOLUTION OF A WATER-SOLUBLE SALT WHICH YIELDS HIGHLY HYDRATED IONS IN AQUEOUS SOLUTION THEREBY TO OBTAIN A SHAPED, TOUGH, DYEABLE GEL WHICH CAN BE MOLECULARLY ORIENTED BY WET STRETCHING AND WHICH HAS BETTER DYE RECEPTIVITY AND WHICH WHICH THE GEL STRUCTURE HAS BEEN DESTROYED; DYEING THE SAID TOUGH, DYEABLE GEL; AND DRYING THE DYED GEL.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |