US3719448A
Expired / Lapsed
US
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Organo-phosphorus compounds containing perfluoroalkyl radicals and their application to cellulosic textiles
Assignee: United States Department of Agriculture
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Filing: 1971-06-09
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Granted: 1973-03-06
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Expires: 1991-06-09
Abstract
Abstract Perfluoroalkyl iodide monomer and telomer ester adducts of diethyl vinylphosphonate were prepared by free radical addition. Iodine of these adducts was replaced by hydrogen, and derivatives of the reduced phosphonate adducts were prepared, which include phosphonic acids, acid chlorides, and aziridinyl phosphine oxides. The aziridinyl phosphine oxides are used to impart oil and water repellency to cellulosic textiles. The other derivatives are useful as chemical intermediates as well as potential forming agents.
Inventors
- 👤 L Chance
- 👤 J Moreau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:19
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/356; D06M15/3564; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C07F9/40; C07F9/4003; C07F9/4006; C07F9/44; C07F9/547; C07F9/553; C07F9/564; D06M13/00; D06M13/322; D06M13/487; D06M13/493; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2172
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
86 words
A single bath process for imparting to cotton textiles oil and water repellency comprising: a. impregnating the cotton textile with a water solution containing a compound selected from the group consisting of 1H, 1H,2H,2H-perfluorononylbis (1-aziridinyl)phosphine oxide and 1-(1H,1H-perfluorooctyl)-1,3-trimethylenebis(di(1-aziridinyl)phosphine oxide), and about from 0.5 to 2 percent of a latent acid catalyst, and b. drying and curing the wet impregnated textile at temperatures about from 120* to 160*C, for periods of time about from 3 minutes to 30 minutes, using the longer times with the lower temperatures.
Claim 2
Dependent Claim
86 words
A single bath process for imparting to cotton textiles oil and water repellency comprising: a. impregnating the cotton textile with a water solution containing a compound selected from the group consisting of 1H, 1H,2H,2H-perfluorononylbis (1-aziridinyl)phosphine oxide and 1-(1H,1H-perfluorooctyl)-1,3-trimethylenebis(di(1-aziridinyl)phosphine oxide), and about from 0.5 to 2 percent of a latent acid catalyst, and b. drying and curing the wet impregnated textile at temperatures about from 120* to 160*C, for periods of time about from 3 minutes to 30 minutes, using the longer times with the lower temperatures.
Claim 3
Dependent Claim
17 words
The cotton textiles prepared by the process of claim 1 where the compound employed is 1H,1H,2H,2H-perfluoro-nonylbis(1-aziridinyl)phosphine oxide.
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |