US2512629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly-4-amino-triazole compositions
Assignee: Celanese Corp
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Filing: 1947-11-05
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Granted: 1950-06-27
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Expires: 1967-11-05
Abstract
No abstract record available.
Inventors
- 👤 Fisher James Wotherspoon
- 👤 Wheatley Edward William
- 👤 Bates Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:13
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/24; D01F2/28; C; C08; C08L; C08L1/00; C08L1/08; C08L1/10; C08L1/12; C08L79/00; C08L79/04; C08L79/06; D01F6/00; D01F6/58; D01F6/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A COMPOSITION COMPRISING A FILM-FORMING ORGANIC SUBSTITUTION DERIVATIVE OF CELLULOSE HAVING SUBSTANTIALLY NO AFFINITY FOR ACID WOOL COLORS AND A POL-4-AMINO-1.2.4-TRIAZOLE OBTAINED BY HEATING A REACTION MIXTURE WHICH ON COMPLETE HYDROLYSIS CONTAINS A MIXTURE OF A DICARBOXYLIC ACID FREE FROM REACTIVE GROUPS OTHER THAN THE CARBOXY GROUPS AND HYDRAZINE, THERE BEING SUFFICIENTLY MORE THAN TOW MOLE OF HYDRAZINE FOR EACH MOLE OF DICARBOXYLIC ACID TO PRODUCE A POLYMER RESISTANT TO HYDROLYSIS BY BOILING HYDROCHLORIC ACID.
Claim 2
Dependent Claim
75 words
A COMPOSITION COMPRISING A FILM-FORMING ORGANIC SUBSTITUTION DERIVATIVE OF CELLULOSE HAVING SUBSTANTIALLY NO AFFINITY FOR ACID WOOL COLORS AND A POL-4-AMINO-1.2.4-TRIAZOLE OBTAINED BY HEATING A REACTION MIXTURE WHICH ON COMPLETE HYDROLYSIS CONTAINS A MIXTURE OF A DICARBOXYLIC ACID FREE FROM REACTIVE GROUPS OTHER THAN THE CARBOXY GROUPS AND HYDRAZINE, THERE BEING SUFFICIENTLY MORE THAN TOW MOLE OF HYDRAZINE FOR EACH MOLE OF DICARBOXYLIC ACID TO PRODUCE A POLYMER RESISTANT TO HYDROLYSIS BY BOILING HYDROCHLORIC ACID.
References Cited (Backward Citations)
US2395642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |