US3953165A
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Flameproofing resins for organic textiles from adduct polymers
Assignee: United States Department of Agriculture
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Filing: 1974-08-22
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Granted: 1976-04-27
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Expires: 1994-08-22
Abstract
Abstract Hydroxymethylphosphine-ammonia and similar polymers, solubilized by hydroxymethylphosphonium salts and formaldehyde, were allowed to react with nitrogenous compounds such as urea, trimethylolmelamine and ammonia 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
- 👤 Armand B. Pepperman, Jr.
- 👤 Donald J. Daigle
- 👤 Sidney L. Vail
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:37
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/43; D06M15/431; C; C08; C08G; C08G16/00; C08G16/02; C08G16/0212; C08G16/0218; C08G16/0243; D06M15/667; D06M15/673; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A process for flameproofing organic textiles, comprising: a. reacting a hydroxymethyl phosphonium compound with ammonia or an amine to form an insoluble adduct polymer; b. mixing said polymer with a formaldehyde solution and a hydroxymethyl phosphonium compound at a mole ratio of formaldehyde to polymer phosphorus of from 1:4 to 4:1 and at a mole ratio of phosphonium compound to polymer phosphorus of from 1:10 to 2:1, thereby dissolving said polymer; and c. reacting in contact with an organic textile said dissolved polymer and a nitrogenous compound containing at least two members of the group consisting of hydrogen atoms or methylol radicals attached to a trivalent atom.
Claim 2
Dependent Claim
107 words
A process for flameproofing organic textiles, comprising: a. reacting a hydroxymethyl phosphonium compound with ammonia or an amine to form an insoluble adduct polymer; b. mixing said polymer with a formaldehyde solution and a hydroxymethyl phosphonium compound at a mole ratio of formaldehyde to polymer phosphorus of from 1:4 to 4:1 and at a mole ratio of phosphonium compound to polymer phosphorus of from 1:10 to 2:1, thereby dissolving said polymer; and c. reacting in contact with an organic textile said dissolved polymer and a nitrogenous compound containing at least two members of the group consisting of hydrogen atoms or methylol radicals attached to a trivalent atom.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein said dissolved polymer and said compound are mixed and applied to said fabric before being reacted.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein said dissolved polymer is applied to said textile and then reacted with said ammonia or gaseous amine.
Claim 5
Dependent Claim
9 words
The product produced by the process of claim 1.
References Cited (Backward Citations)
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Cited
US3619113A
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US3644083A
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US3855349A
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US3844824A
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US3864076A
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US3784356A
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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) | 1979-04-27 | 1979-10-27 | 1980-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-27 | 1983-10-27 | 1984-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-27 | 1987-10-27 | 1988-04-27 | $7700.00 | Window Closed / Lapsed |