US2769793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fiber-forming acrylonitrile polymer blends
Assignee: Solutia Inc
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Filing: 1951-05-24
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Granted: 1956-11-06
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Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:01
CPC Classifications
C; C08; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A HEAT-STABLE FIBER-FORMING SOLUTION WHICH COMPRISES A BLEND OF FROM 0.1 TO 20% OF (A) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLY N-VINYL-CARBAZOLE, POLYVINYLANTHRACENE, POLYVINYLNAPHTHALENE, POLYVINYLPYRENE, POLYVINYLFLUORENE, POLYVINYLPHENOXTHINE, POLYACENAPHTHYLONE, POLYVINYLBIPHENYL, POLYISOPROPENYLBIPHENYL AND POLYVINYLACENAPHTHENE, AND FROM 80 TO 99.9% OF (B) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE, COPOLYMERS OF AT LEAST 85% ACRYLONITRILE AND NOT MORE THAN 15% OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, AND BLENDS OF SAID ACRYLONITRILE POLYMER AND CO-POLYMERS CONTAINING AT LEAST 85% F ACRYLONITRILE WITH A POLYMER OF AT LEAST 30% OF A VINYLPYRIDINE AND UP TO 70% OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, BOTH (A) AND (B) BEING DISSOLVED IN N,N-DIMETHYLACETAMIDE.
Claim 2
Dependent Claim
112 words
A HEAT-STABLE FIBER-FORMING SOLUTION WHICH COMPRISES A BLEND OF FROM 0.1 TO 20% OF (A) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLY N-VINYL-CARBAZOLE, POLYVINYLANTHRACENE, POLYVINYLNAPHTHALENE, POLYVINYLPYRENE, POLYVINYLFLUORENE, POLYVINYLPHENOXTHINE, POLYACENAPHTHYLONE, POLYVINYLBIPHENYL, POLYISOPROPENYLBIPHENYL AND POLYVINYLACENAPHTHENE, AND FROM 80 TO 99.9% OF (B) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYACRYLONITRILE, COPOLYMERS OF AT LEAST 85% ACRYLONITRILE AND NOT MORE THAN 15% OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, AND BLENDS OF SAID ACRYLONITRILE POLYMER AND CO-POLYMERS CONTAINING AT LEAST 85% F ACRYLONITRILE WITH A POLYMER OF AT LEAST 30% OF A VINYLPYRIDINE AND UP TO 70% OF ANOTHER POLYMERIZABLE MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH, BOTH (A) AND (B) BEING DISSOLVED IN N,N-DIMETHYLACETAMIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |