US3911189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofing of fabrics
Assignee: Occidental Chemical Corp
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Filing: 1973-05-18
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Granted: 1975-10-07
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Expires: 1993-05-18
Abstract
Abstract Normally flammable textile fabrics composed of polyamides such as polyhexamethylene adipamides, polycaproamides, poly(mphenyleneisophthalamides) and the like, are rendered highly flameproof by the intimate association therewith of a flameproofing amount of the reaction product of aqueous phosphoric acid or an acid ammonium phosphate and an alkylene oxide, e.g., ethylene oxide. Amounts of said reaction product of at least, and preferably in excess of 0.5 percent OWF (on the weight of the fiber) increase the Oxygen Index of the treated fabrics to over 40. Preferably the reaction product is rendered neutral before or after application to the fabric and the treated fabrics are non-corrosive, non-irritating in nature, and have a pleasant hand.
Inventors
- 👤 George T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:16
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M13/00; D06M13/244; D06M13/282; D06M13/292; D06M13/295; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2672; Y10T442/268; Y10T442/2861; Y10T442/2893; Y10T442/2902
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
83 words
A FLAMEPROOF SYNTHETIC FIBROUS MATERIAL COMPRISING A NORMALLY FLAMMABLE SYNTHETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENEADIPAMIDE), POLYCAPROAMIDE, AND POLY(M-PHENYLENISOPTHALAMIDE), WHICH MATERIAL CONTAINS A FLAME RETARDANT AMOUNT OF THE REACTION PRODUCT OF AN AQUEOUS SOLUTION OF ORTHOPHOSPHORIC ACID CONTAINING FROM ABOUT 1 TO ABOUT 85% BY WEIGHT ORTHOPHOSPHORIC ACID AND AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE, THE WEIGHT RATIO OF ALKYLENE OXIDE TO H3PO4 IN SAID REACTION PRODUCT BEING 0.2-1.5:1.
Claim 2
Dependent Claim
83 words
A FLAMEPROOF SYNTHETIC FIBROUS MATERIAL COMPRISING A NORMALLY FLAMMABLE SYNTHETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENEADIPAMIDE), POLYCAPROAMIDE, AND POLY(M-PHENYLENISOPTHALAMIDE), WHICH MATERIAL CONTAINS A FLAME RETARDANT AMOUNT OF THE REACTION PRODUCT OF AN AQUEOUS SOLUTION OF ORTHOPHOSPHORIC ACID CONTAINING FROM ABOUT 1 TO ABOUT 85% BY WEIGHT ORTHOPHOSPHORIC ACID AND AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE, THE WEIGHT RATIO OF ALKYLENE OXIDE TO H3PO4 IN SAID REACTION PRODUCT BEING 0.2-1.5:1.
Claim 3
Dependent Claim
29 words
Flameproofed synthetic fibrous material as claimed in claim 1 wherein the material comprises at least 0.5 percent by weight of said reaction product, which has been neutralized by ammonia.
Claim 4
Dependent Claim
26 words
Flameproofed synthetic fibrous material as claimed in claim 2 wherein the material comprises from about 0.73 to about 32 percent by weight of said reaction product.
Claim 5
Dependent Claim
16 words
Flameproofed synthetic fibrous material as claimed in claim 2 wherein the alkylene oxide is ethylene oxide.
Claim 6
Dependent Claim
14 words
Flameproofed synthetic material as claimed in claim 2 wherein the synthetic material is poly(m-phenyleneisophthalamide).
Claim 7
Dependent Claim
91 words
A process which comprises the steps of treating a normally flammable synthetic polymer material selected from the group consisting of poly(hexamethyleneadipamide), polycaproamide, and poly(m-phenyleneisophthalamide) with the reaction product of aqueous orthophosphoric acid containing from about 1 to about 85 percent by weight orthophosphoric acid and at least one alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide, the weight ratio of alkylene oxide to H3PO4 in said reaction product being 0.5-1.5:1 and depositing an flame retarding amount of said reaction product on the polymer material.
Claim 8
Dependent Claim
91 words
A process which comprises the steps of treating a normally flammable synthetic polymer material selected from the group consisting of poly(hexamethyleneadipamide), polycaproamide, and poly(m-phenyleneisophthalamide) with the reaction product of aqueous orthophosphoric acid containing from about 1 to about 85 percent by weight orthophosphoric acid and at least one alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide, the weight ratio of alkylene oxide to H3PO4 in said reaction product being 0.5-1.5:1 and depositing an flame retarding amount of said reaction product on the polymer material.
Claim 9
Dependent Claim
12 words
The process as described in claim 6 wherein the polymer is poly(m-phenyleneisophthalamide).
Claim 10
Dependent Claim
20 words
The process as described in claim 7 wherein the treated material has an Oxygen Index of at least about 40.
Claim 11
Dependent Claim
21 words
The process as described in claim 8 wherein the treated material has an Oxygen Index of from 43 to about 65.
Claim 12
Dependent Claim
107 words
The process which comprises the steps of a. applying to a normally flammable synthetic polymer material selected from the group consisting of polyhexamethylene adipamide, polycaproamide, and poly(m-phenyleneisophthalamide) a fire retardant amount of a reaction product of aqueous phosphoric acid and an alkylene oxide, said reaction product having been obtained by reacting an aqueous solution of orthophosphoric acid containing from about 1 to about 85 weight percent of orthophosphoric acid with an amount of alkylene oxide which is about 0.5 to 1.5 times the weight of 100 percent orthophosphoric acid present and thereafter neutralizing the resultant reaction product with ammonia and b. drying the treated synthetic polymer material.
Claim 13
Dependent Claim
107 words
The process which comprises the steps of a. applying to a normally flammable synthetic polymer material selected from the group consisting of polyhexamethylene adipamide, polycaproamide, and poly(m-phenyleneisophthalamide) a fire retardant amount of a reaction product of aqueous phosphoric acid and an alkylene oxide, said reaction product having been obtained by reacting an aqueous solution of orthophosphoric acid containing from about 1 to about 85 weight percent of orthophosphoric acid with an amount of alkylene oxide which is about 0.5 to 1.5 times the weight of 100 percent orthophosphoric acid present and thereafter neutralizing the resultant reaction product with ammonia and b. drying the treated synthetic polymer material.
Claim 14
Dependent Claim
16 words
The process as claimed in claim 10 wherein the normally flammable synthetic polymer material is poly(m-phenyleneisophthalamide).
Claim 15
Dependent Claim
14 words
The process as claimed in claim 11 wherein the alkylene oxide is ethylene oxide.
Claim 16
Dependent Claim
22 words
The process of claim 10 wherein the treated material contains about 0.73 to about 32 percent by weight of the reaction product.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |