US3900665A
Expired / Lapsed
US
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Flame retarding of solid substrates with hydroxyalkylphosphonate carbamates
Assignee: Stauffer Chemical Co
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Filing: 1973-08-20
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Granted: 1975-08-19
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Expires: 1993-08-20
Abstract
Abstract 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: 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 halohalkyl 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.
Inventors
- 👤 Edward D Weil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:36
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; C09; C09K; C09K21/00; C09K21/06; C09K21/12; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; D21H17/00; D21H17/03; D21H17/05; D21H21/00; D21H21/14; D21H21/34; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
30 words
A PROCESS FOR FLAME RETARDING A FLAMMABLE, CELLULOSIC SOLID SUBSTRATE, SAID PROCESS COMPRISING APPLYING TO THE SUBSTRATE AN EFFECTIVE AMOUNT OF AT LEAST ONE HYDROXYALKYLPHOSPHONATE CARBAMATE CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
30 words
A PROCESS FOR FLAME RETARDING A FLAMMABLE, CELLULOSIC SOLID SUBSTRATE, SAID PROCESS COMPRISING APPLYING TO THE SUBSTRATE AN EFFECTIVE AMOUNT OF AT LEAST ONE HYDROXYALKYLPHOSPHONATE CARBAMATE CORRESPONDING TO THE FORMULA:
Claim 3
Dependent Claim
32 words
The process of claim 1, wherein said hydroxyalkylphosphonate carbamate is applied to said substrate in a concentration of from about 5 to 50% as based on the dry weight of said substrate.
Claim 4
Dependent Claim
16 words
The process of claim 1, wherein said hydroxyalkylphosphonate carbamate is selected from the group consisting of:
Claim 5
Dependent Claim
25 words
The process of claim 1, wherein the curing of said hydroxyalkylphosphonate carbamate is conducted in the presence of an effective amount of an acidic catalyst.
Claim 6
Dependent Claim
24 words
The process of claim 1, wherein the curing of said hydroxyalkylphosphonate carbamate is conducted in the presence of an effective amount of an aminoplast.
Claim 7
Dependent Claim
29 words
The process of claim 1, wherein the curing of said hydroxyalkylphosphonate carbamate is conducted in the presence of an effective amount of both an acidic catalyst and an aminoplast.
Claim 8
Dependent Claim
19 words
The process of claim 1, wherein said hydroxyalylphosphonate carbamate is applied to said substrate in an organic solvent medium.
Claim 9
Dependent Claim
18 words
The process of claim 1, wherein said hydroxyalkylphosphonate carbamate is applied to said substrate in an aqueous medium.
Claim 10
Dependent Claim
12 words
The process of claim 1, wherein said substrate is a cellulosic textile.
Claim 11
Dependent Claim
13 words
The process of claim 9, wherein said textile substrate is a cotton textile.
Claim 12
Dependent Claim
27 words
A flame retardant article, comprising a solid cellulosic substrate having present thereon a cured, fire retardant finish of at least one hydroxyalkylphosphonate carbamate corresponding to the formula:
Claim 13
Dependent Claim
27 words
A flame retardant article, comprising a solid cellulosic substrate having present thereon a cured, fire retardant finish of at least one hydroxyalkylphosphonate carbamate corresponding to the formula:
Claim 14
Dependent Claim
16 words
The article of claim 11, wherein said hydroxyalkylphosphonate carbamate is selected from the group consisting of:
Claim 15
Dependent Claim
12 words
The article of claim 11, wherein said substrate is a cellulosic textile.
Claim 16
Dependent Claim
13 words
The article of claim 13, wherein said textile substrate is a cotton textile.
Claim 17
Dependent Claim
31 words
The process of claim 1, wheRein said hydroxyalkylphosphonate carbamate is selected from the group consisting of: bis(2-chloroethyl)hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate; bis(2,3-dibromopropyl) hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate; and, diallyl hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate.
Claim 18
Dependent Claim
32 words
The article of claim 11, wherein said hydroxyalkylphosphonate carbamate is selected from the group consisting of: bis(2-chloroethyl) hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate;; bis(2,3-dibromopropyl) hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate; and, diallyl hydroxymethylphosphonate methylolcarbamate and dimethylolcarbamate.
References Cited (Backward Citations)
US3763283A
Cited
US3825630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |