Patent US3835204A successfully refreshed from Google Patents.
US3835204A
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Hydroxyalkylphosphonate carbamates
Assignee: Stauffer Chemical Co
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Filing: 1971-06-28
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Granted: 1974-09-10
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Expires: 1991-06-28
Abstract
Abstract WHERE N IS AN INTEGER HAVING A VALUE OF FROM 1 TO ABOUT 4, R and R'' can be the same or different and are selected from the group consisting of C1-C4 alkyl, allyl and haloalkyl groups, Y is H or CH2OH and R'''' and R'''''' can be the same or different and are selected from the group consisting of H and C1-C4 alkyl groups, whereupon the thus applied carbamate is cured so as to form an insoluble, fire retardant finish. The present invention provides a process for flame retarding textiles, paper and other flammable, solid substrates by applying to the substrate at least one novel hydroxyalkylphosphonate carbamate corresponding to the formula:
Inventors
- 👤 E Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:40
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/0002; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5353; C09; C09K; C09K21/00; C09K21/06; C09K21/12; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; D21H17/00; D21H17/03; D21H17/05; D21H17/10; D21H21/00; D21H21/14; D21H21/34; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
The hydroxyalkylphosphonate carbamates according to claim 1 selected from the group consisting of:
Claim 2
Dependent Claim
30 words
The hydroxyalkylphosphonate carbamates according to claim 1 selected from the group consisting of: bis(2-chloroethyl) hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate; bis(2, 3-dibromopropyl) hydroxymethlphosphonate methylolcarbamate and dimethylolcarbamate; and, diallyl hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate.
References Cited (Backward Citations)
DE1817682A1
Cited
US3763283A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |