US3791854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant fabric blends
Assignee: United States Department of the Army
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Filing: 1971-11-02
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Granted: 1974-02-12
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Expires: 1991-11-02
Abstract
Abstract Flame retardance-producing compositions for fabric blends comprising thermoplastic fibers, such as polyester fibers, and cellulose fibers, such as cotton fibers, comprising mono (2,3 dibromopropyl) phosphoric acid, a water-soluble cyclic nitrogencontaining polymerizable monomeric compound, and a catalytic amount of tetrakis (hydroxymethyl) phosphonium chloride in aqueous solution, the method of rendering a fibrous organic fabric flame retardant by the application of the flame retardance-producing composition to such a fabric, including drying the fabric, and the flame retardant fibrous organic fabric produced by the method using the flame retardance-producing composition therein.
Inventors
- 👤 T Miles
- 👤 A Delasanta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:23
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/433; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31971; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/2689
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
36 words
A flame-retardant cotton-polyester blend fabric according to claim 1, wherein said polymeric reaction product is deposited in said fabric in an amount from about 34 percent to about 45 percent of the weight of said fabric.
Claim 2
Dependent Claim
30 words
A flame-retardant cotton-polyester blend fabric according to claim 1, wherein said water-soluble cyclic nitrogen-containing polymerizable monomeric compound is selected from the group consisting of triazines, triazones, and cyclic alkylene ureas.
Claim 3
Dependent Claim
19 words
A flame-retardant cotton-polyester blend fabric according to claim 3, wherein said water-soluble cyclic nitrogen-containing polymerizable monomeric compound is trimethylolmelamine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |