US2886538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus containing aziridinyl-alcohol polymers and flame resistant organic textiles
Assignee: Individual
•
Filing: 1956-06-05
•
Granted: 1959-05-12
•
Expires: 1976-06-05
Abstract
No abstract record available.
Inventors
- 👤 Leon H Chance
- 👤 Jr George L Drake
- 👤 Wilson A Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:01
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/02; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR PRODUCING FLAME RESISTANT POLYMERS WHICH COMPRISES HEATING A MIXTURE OF AN AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF L-AZIRIDINYL PHOSPHINE OXIDES AND SULFIDES AND AN ALCOHOL HAVING THE FORMULA, R(OH)X, WHERE X IS AN INTEGER OF AT LEAST 2 AND R IS AN ALKYL RADICAL, THE PROPORTIONS OF ALCOHOL AND AZIRIDINYL COMPOUND IN SAID MIXTURE BEING SUCH THAT FROM 1 TO 2 ALCOHOLIC --OH GROUPS ARE PRESENT FOR EACH 1AZIRIDINYL GROUP, AND CONTINUING HEATING UNTIL SAID AZIRIDINYL COMPOUND AND SAID ALCOHOL HAVE REACTED WITH EACH OTHER TO PRODUCE A POLYMERIC REACTION PRODUCT.
Claim 2
Dependent Claim
96 words
A PROCESS FOR PRODUCING FLAME RESISTANT POLYMERS WHICH COMPRISES HEATING A MIXTURE OF AN AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF L-AZIRIDINYL PHOSPHINE OXIDES AND SULFIDES AND AN ALCOHOL HAVING THE FORMULA, R(OH)X, WHERE X IS AN INTEGER OF AT LEAST 2 AND R IS AN ALKYL RADICAL, THE PROPORTIONS OF ALCOHOL AND AZIRIDINYL COMPOUND IN SAID MIXTURE BEING SUCH THAT FROM 1 TO 2 ALCOHOLIC --OH GROUPS ARE PRESENT FOR EACH 1AZIRIDINYL GROUP, AND CONTINUING HEATING UNTIL SAID AZIRIDINYL COMPOUND AND SAID ALCOHOL HAVE REACTED WITH EACH OTHER TO PRODUCE A POLYMERIC REACTION PRODUCT.
References Cited (Backward Citations)
DE863055C
Cited
DE854651C
Cited
DE888853C
Cited
US2660543A
Cited
US2582613A
Cited
US2666750A
Cited
US2606901A
Cited
US2672459A
Cited
US2654738A
Cited
US2682521A
Cited
US2772188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |