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US3320205A
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Method of manufacturing spinning solutions of mixed vinyl chloride and alpha-methylstrene polymers
Assignee: Kurashiki Rayon Co Ltd
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Filing: 1963-06-27
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Granted: 1967-05-16
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Imai Kiyokazu
- 👤 Fukushima Osamu
- 👤 Miyazaki Sadamaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:26
CPC Classifications
C; C08; C08F; C08F112/00; C08F112/02; C08F112/04; C08F112/06; C08F112/12; C08L; C08L25/00; C08L25/02; C08L25/16; C08L27/00; C08L27/02; C08L27/04; C08L27/06; D; D01; D01F; D01F6/00; D01F6/44; D01F6/48; D01F6/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A METHOD OF MANUFACTURING SPINNING SOLUTIONS WHICH COMPRISES SOLUTION POLYMERIZING A-METHYLSTYRENE IN ANAROMATIC SOLVENT, SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, STYRENE, ETHYLBENZENE, CUMENE AND HALOGENATGED DERIVATIVES THEREOF, THEN REMOVING SOLVENT TO A POLYMER CONCENTRATION OF AT LEAST 20%, THEREAFTER ADDING THERETO POLYVINYL CHLORIDE AND A COMMON SOLVENT FOR THE MIXTURE OF POLY-A-METHYLSTYRENE AND POLYVINYL CHLORIDE.
Claim 2
Independent Claim
57 words
A METHOD OF MANUFACTURING SPINNING SOLUTIONS WHICH COMPRISES SOLUTION POLYMERIZING A-METHYLSTYRENE IN ANAROMATIC SOLVENT, SELECTED FROM THE GROUP CONSISTING OF BENZENE, TOLUENE, STYRENE, ETHYLBENZENE, CUMENE AND HALOGENATGED DERIVATIVES THEREOF, THEN REMOVING SOLVENT TO A POLYMER CONCENTRATION OF AT LEAST 20%, THEREAFTER ADDING THERETO POLYVINYL CHLORIDE AND A COMMON SOLVENT FOR THE MIXTURE OF POLY-A-METHYLSTYRENE AND POLYVINYL CHLORIDE.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |