Patent US2838645A successfully refreshed from Google Patents.
Patent US2889303A successfully refreshed from Google Patents.
US2889303A
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Acrylonitrile polymer composition stabilized with tetrakis hydroxymethyl phosphoniumchloride and method of making same
Assignee: Solutia Inc
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Filing: 1956-12-19
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Granted: 1959-06-02
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Expires: 1976-12-19
Abstract
No abstract record available.
Inventors
- 👤 Witt Hobson D De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C08L; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A NEW COMPOSITION OF MATTER COMPRISES A POLYMER CONTAINING IN POLYMERIZED FROM AT LEAST 80% OF ACRYLONITRILE AND UP TO 20 PERCENT OF AT LEAST ONE COPOLYMERIZABLE MONO-OLEFINIC MONOMER, A SOLVENT THEREFOR, AND, AS A COLOR INHIBITOR, TETRAKIS HYDROXYMETHYLPHOSPONIUM CHLORIDE.
Claim 2
Dependent Claim
40 words
A NEW COMPOSITION OF MATTER COMPRISES A POLYMER CONTAINING IN POLYMERIZED FROM AT LEAST 80% OF ACRYLONITRILE AND UP TO 20 PERCENT OF AT LEAST ONE COPOLYMERIZABLE MONO-OLEFINIC MONOMER, A SOLVENT THEREFOR, AND, AS A COLOR INHIBITOR, TETRAKIS HYDROXYMETHYLPHOSPONIUM CHLORIDE.
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |