US3961110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of organic textiles with adduct polymers and phenols
Assignee: United States Department of Agriculture
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Filing: 1974-08-22
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Granted: 1976-06-01
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Expires: 1994-08-22
Abstract
Abstract Phosphorus- and nitrogen-containing polymers, solubilized by hydroxymethylphosphonium salts and formaldehyde, were allowed to react with phenol, alkyl substituted phenols, or halogen substituted phenols which contain one or more hydrogens ortho or para to the phenolic hydroxyl group to (a) prepare flame-resistant polymers and (b) prepare flame-, glow-, wrinkle-, and shrink-resistant woven and knit textiles which contain 25% or more cellulosic fibers.
Inventors
- 👤 Donald J. Daigle
- 👤 Armand B. Pepperman, Jr.
- 👤 Sidney L. Vail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:20
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/673; D06M15/39; D06M15/41; D06M15/423; D06M15/43; D06M15/431; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/2689
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
A process for preparing flame resistant organic textiles, comprising: wetting an organic textile with a solution comprising (1) an adduct polymer prepared by, reacting a hydroxymethylphosphorus compound with a nitrogenous compound to form an insoluble polymeric precipitate, and dissolving said precipitate in formalin and a hydroxymethylphosphonium compound with a mole ratio of 1:4 to 4:1 of formaldehyde to phosphorus contained in the precipitate and a 1:10 to 2:1 ratio of phosphonium compound to phosphorus contained in the precipitate and (2) a phenolic compound containing at least one hydrogen atom ortho or para to the phenolic hydroxylic group; and drying and heating the treated textile at a temperature of from 90° to 170°C. until the adduct polymer and phenolic compound have reacted. pg,16
Claim 2
Dependent Claim
122 words
A process for preparing flame resistant organic textiles, comprising: wetting an organic textile with a solution comprising (1) an adduct polymer prepared by, reacting a hydroxymethylphosphorus compound with a nitrogenous compound to form an insoluble polymeric precipitate, and dissolving said precipitate in formalin and a hydroxymethylphosphonium compound with a mole ratio of 1:4 to 4:1 of formaldehyde to phosphorus contained in the precipitate and a 1:10 to 2:1 ratio of phosphonium compound to phosphorus contained in the precipitate and (2) a phenolic compound containing at least one hydrogen atom ortho or para to the phenolic hydroxylic group; and drying and heating the treated textile at a temperature of from 90° to 170°C. until the adduct polymer and phenolic compound have reacted. pg,16
Claim 3
Dependent Claim
9 words
The product produced by the method of claim 1.
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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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |