US3255146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer solutions stabilized with mercapto-containing heterocyclic compounds
Assignee: Bayer AG
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Filing: 1962-07-05
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Granted: 1966-06-07
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Schlesmann Harro
- 👤 Dinges Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A COMPOSITION OF MATTE CONSISTING ESSENTIALLY OF A SOLUTION OF AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 80% ACRYLONITRILE IN A SOLVENT SELECTED FROM THE GROP CONSISTING OF DIMETHYL FORMAMIDE AND DIMETHYL ACETAMIDE AND FROM 0.01 TO 5 % BY WEIGHT BASED ON THE WEIGHT OF SAID POLYMER IN SOLUTIN OF A HETEROCYCLIC COMPOUND CONTAINING A MERCAPTO GROUP SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOBENZIMIDAZOLE, 2-MERCAPTO-4,6,6-TRIMETHYL-DIHYDROPYRIMIDINE, 2-MERCAPTO-3,4,6,6-TETRAMETHYLDIHYDROPYRIMIDINE AND 2-THIO-5-METHYL-1,3,5-PERHYDROTRIAZINE.
Claim 2
Dependent Claim
68 words
A COMPOSITION OF MATTE CONSISTING ESSENTIALLY OF A SOLUTION OF AN ACRYLONITRILE POLYMER CONTAINING AT LEAST 80% ACRYLONITRILE IN A SOLVENT SELECTED FROM THE GROP CONSISTING OF DIMETHYL FORMAMIDE AND DIMETHYL ACETAMIDE AND FROM 0.01 TO 5 % BY WEIGHT BASED ON THE WEIGHT OF SAID POLYMER IN SOLUTIN OF A HETEROCYCLIC COMPOUND CONTAINING A MERCAPTO GROUP SELECTED FROM THE GROUP CONSISTING OF 2-MERCAPTOBENZIMIDAZOLE, 2-MERCAPTO-4,6,6-TRIMETHYL-DIHYDROPYRIMIDINE, 2-MERCAPTO-3,4,6,6-TETRAMETHYLDIHYDROPYRIMIDINE AND 2-THIO-5-METHYL-1,3,5-PERHYDROTRIAZINE.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |