Patent US3752102A successfully refreshed from Google Patents.
Patent US4063884A successfully refreshed from Google Patents.
US4063884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Durably flame proofed textile materials
Assignee: Occidental Chemical Corp
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Filing: 1975-12-22
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Granted: 1977-12-20
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Expires: 1995-12-22
Abstract
Abstract Normally flammable fabrics, such as fabrics composed of polypropylene and polyamides such as polycaproamides, poly(m-phenyleneisophthalamides) and the like which have been rendered flame proof by the intimate association therewith of a flame proofing amount of a phosphoric acid and reacted in situ with an epoxy compound. The resultant compositions can be washed in water without substantial loss in flame proof character.
Inventors
- 👤 George T. Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:48
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M15/55; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/2689
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
84 words
The process for producing flame-proofed synthetic fibrous flexible textile materials which comprises treating a normally flammable fibrous synthetic material selected from the group consisting of polypropylene, poly(hexamethyleneadipamide), polycaproamide and poly(m-phenyleneisophthalamide) by first intimately admixing the material with about 0.4 to about 25 percent by weight, based on the weight of material, of a phosphoric acid, and subsequently applying an epoxy compound thereto and reacting said epoxy compound, at a temperature from about 75 to about 150 degrees centigrade, with said phosphoric acid in situ.
Claim 2
Dependent Claim
84 words
The process for producing flame-proofed synthetic fibrous flexible textile materials which comprises treating a normally flammable fibrous synthetic material selected from the group consisting of polypropylene, poly(hexamethyleneadipamide), polycaproamide and poly(m-phenyleneisophthalamide) by first intimately admixing the material with about 0.4 to about 25 percent by weight, based on the weight of material, of a phosphoric acid, and subsequently applying an epoxy compound thereto and reacting said epoxy compound, at a temperature from about 75 to about 150 degrees centigrade, with said phosphoric acid in situ.
Claim 3
Dependent Claim
30 words
The process as described in claim 1 wherein the reaction of the epoxy resin and phosphoric acid is effected by heating the material at about 75° to about 150° centigrade.
Claim 4
Dependent Claim
27 words
The process as described in claim 2 wherein the reaction of the epoxy resin is effected by heating the material at about 100° to about 120° centigrade.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein the epoxy resin is selected from the group consisting of epoxidized soybean oil, epoxidized linseed oil and the diglycidyl ether of bisphenol A.
Claim 6
Dependent Claim
13 words
The process of claim 4 wherein the epoxy resin is epoxidized soybean oil.
Claim 7
Dependent Claim
13 words
The process of claim 4 wherein the epoxy resin is epoxidized linseed oil.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein the said normally flammable material is poly(m-phenyleneisophthalamide).
Claim 9
Dependent Claim
29 words
The process of claim 7 wherein the reaction between the epoxy resin and the phosphoric acid is effected by heating the material at about 75° to about 150° centigrade.
Claim 10
Dependent Claim
25 words
The process of claim 8 wherein the reaction between the epoxy resin and the phosphoric acid is effected at about 100° to about 120° centigrade.
Claim 11
Dependent Claim
29 words
The process of claim 8 wherein the epoxy resin is selected from the group consisting of epoxidized soybean oil, epoxidized linseed oil and the diglycidyl ether of bisphenol A.
Claim 12
Dependent Claim
13 words
The process of claim 10 wherein the epoxy resin is epoxidized soybean oil.
Claim 13
Dependent Claim
79 words
The process which comprises the steps of impregnating a synthetic fibrous material consisting essentially of poly(m-phenyleneisophthalamide) fibers in an aqueous solution comprising about 7.5 percent by weight of 85 percent by weight orthophosphoric acid, drying said impregnated material, applying to said dried material a 10 percent by weight solution of epoxidized soybean oil in 1,1,1-trichloroethane, distilling the trichloroethane solvent and causing the epoxy compound to react with the phosphoric acid in-situ by heating the material at about 110° centigrade.
Claim 14
Dependent Claim
79 words
The process which comprises the steps of impregnating a synthetic fibrous material consisting essentially of poly(m-phenyleneisophthalamide) fibers in an aqueous solution comprising about 7.5 percent by weight of 85 percent by weight orthophosphoric acid, drying said impregnated material, applying to said dried material a 10 percent by weight solution of epoxidized soybean oil in 1,1,1-trichloroethane, distilling the trichloroethane solvent and causing the epoxy compound to react with the phosphoric acid in-situ by heating the material at about 110° centigrade.
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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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |