US2870042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant organic textiles and method of production
Assignee: Individual
•
Filing: 1957-04-24
•
Granted: 1959-01-20
•
Expires: 1977-04-24
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 11:52
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/487; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2762; Y10T442/277
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR RENDERING A HYDROPHILIC ORGANIC FIBROUS MATERIAL FLAME-RESISTANT WHICH COMPRISES IMPREGNATING SAID FIBROUS MATERIAL WITH A HOMOGENEOUS AQUEOUS LIQUID MIXTURE CONTAINING A 1-AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (1-AZIRIDINYL) PHOSPHINE OXIDE AND TRIS (1-AZIRIDINYL) PHOSPHINE SULFIDE AND AN ALCOHOL OF THE FORMULA R (OH) WHERE X IS AN INTEGER OF AT LEAST 2 AND R IS SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED AND AMINO-SUBSTITUTED ALKYL RADICALS, THE PROPORTIONS OF 1-AZIRIDINYL COMPOUND AND ALCOHOL BEING SUCH THAT FROM 1 TO 2 ALCOHOLIC -OH GROUPS ARE PRESENT FOR EACH 1-AZIRIDINYL GROUP, AND HEATING THE IMPREGNATED MATERIAL TO A TEMPERATURE OF ABOUT FROM 100* TO 170*C. TO PRODUCE A FLAME-RESISTANT POLYMER IN AND ON THE FIBERS OF THE MATERIAL.
Claim 2
Dependent Claim
122 words
A PROCESS FOR RENDERING A HYDROPHILIC ORGANIC FIBROUS MATERIAL FLAME-RESISTANT WHICH COMPRISES IMPREGNATING SAID FIBROUS MATERIAL WITH A HOMOGENEOUS AQUEOUS LIQUID MIXTURE CONTAINING A 1-AZIRIDINYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TRIS (1-AZIRIDINYL) PHOSPHINE OXIDE AND TRIS (1-AZIRIDINYL) PHOSPHINE SULFIDE AND AN ALCOHOL OF THE FORMULA R (OH) WHERE X IS AN INTEGER OF AT LEAST 2 AND R IS SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED AND AMINO-SUBSTITUTED ALKYL RADICALS, THE PROPORTIONS OF 1-AZIRIDINYL COMPOUND AND ALCOHOL BEING SUCH THAT FROM 1 TO 2 ALCOHOLIC -OH GROUPS ARE PRESENT FOR EACH 1-AZIRIDINYL GROUP, AND HEATING THE IMPREGNATED MATERIAL TO A TEMPERATURE OF ABOUT FROM 100* TO 170*C. TO PRODUCE A FLAME-RESISTANT POLYMER IN AND ON THE FIBERS OF THE MATERIAL.
References Cited (Backward Citations)
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US2660543A
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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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |