US3104154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graft copolymer containing spinnable solution and method for preparing and spinning thereof
Assignee: Toyobo Co Ltd
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Filing: 1962-02-05
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Granted: 1963-09-17
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Expires: 1982-02-05
Abstract
No abstract record available.
Inventors
- 👤 Morimoto Saichi
- 👤 Yamamoto Akira
- 👤 Otsuka Masamichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:20
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; C; C08; C08F; C08F289/00; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A METHOD FOR PREPARING GRAFT COPOLYMER-CONTAINING SPINNABLE SOLUTION WHICH COMPRISES (1) DISSOLVING (A) PROTEIN AND (B) A VINYL MONOMERIC MATERIAL CONTAINING AT LEAST 85% BY WEIGHT OF ACRYLONITRILE IN A CONCENTRATED AQUEOUS ZINC CHLORIDE SOLUTION CONTAINING AT LEAST 40% BY WEIGHT OF ZINC CHLORIDE AND THEN (II) POLYMERIZING THE DISSOLVED MONOMERIC MATERIAL IN THE (II) POLYMERIZING DISSOLVED PROTEIN AT A TEMPERATURE OF FROM 0* TO 70*C., WHEREBY A SPINNABLE SOLUTION IS OBTAINED, THE AMOUNT OF THE PROTEIN PLUS THE MONOMERIC MATERIAL BEING SUCH THAT THE RESULTING SPINNABLE SOLUTION CONTAINS FROM 4 TO 10% BY WEIGHT OF GRAFT COPOLYMER THEREFROM, AND THE RATIO OF THE PROTEIN TO THE MONIOMERIC MATERIAL BEING SUCH THAT THE RESULTING GRAFT COPOLYMER CONTAINS FROM 10 TO 60% BY WEIGHT OF PROTEIN COMPONENT.
Claim 2
Independent Claim
126 words
A METHOD FOR PREPARING GRAFT COPOLYMER-CONTAINING SPINNABLE SOLUTION WHICH COMPRISES (1) DISSOLVING (A) PROTEIN AND (B) A VINYL MONOMERIC MATERIAL CONTAINING AT LEAST 85% BY WEIGHT OF ACRYLONITRILE IN A CONCENTRATED AQUEOUS ZINC CHLORIDE SOLUTION CONTAINING AT LEAST 40% BY WEIGHT OF ZINC CHLORIDE AND THEN (II) POLYMERIZING THE DISSOLVED MONOMERIC MATERIAL IN THE (II) POLYMERIZING DISSOLVED PROTEIN AT A TEMPERATURE OF FROM 0* TO 70*C., WHEREBY A SPINNABLE SOLUTION IS OBTAINED, THE AMOUNT OF THE PROTEIN PLUS THE MONOMERIC MATERIAL BEING SUCH THAT THE RESULTING SPINNABLE SOLUTION CONTAINS FROM 4 TO 10% BY WEIGHT OF GRAFT COPOLYMER THEREFROM, AND THE RATIO OF THE PROTEIN TO THE MONIOMERIC MATERIAL BEING SUCH THAT THE RESULTING GRAFT COPOLYMER CONTAINS FROM 10 TO 60% BY WEIGHT OF PROTEIN COMPONENT.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |