US3896250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproofing of fabrics
Assignee: Occidental Chemical Corp
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Filing: 1973-06-18
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Granted: 1975-07-22
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Expires: 1993-06-18
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 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 procuct of ethylene oxide and diammonium acid phosphate is used 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
2026-11-09 07:55
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: 22
Claim 1
Independent Claim
137 words
FLAMEPROFED SYNTHETIC FIBROUS MATERIAL COMPRISING A NORMALLY FLAMMABLE SYNTHETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENE ADIPAMIDE), POLYCAPROAMIDE, AND POLY(HEXAMETHYLENE ADIPAMIDE), WHICH MATERIAL CONTAINS A FLAME RETARDANT AMOUNT OFA REACTION PRODUCT OF AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE AND AN ALKYLENE OXIDE, SAID REACTION PRODUCT HAVING BEEN OBTANED BY REACTING AT A TEMPERATURE FROM ABOUT 0* TO ABOUT 100* CENTIGRADE, AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE CONTAINING FROM ABOUT 5 TO ABOUT 40 WEIGHT PERCENT OF AN ACID AMMONIUM PHOSPHATE SELECTAED FROM THE GROUP CONSISTING OF DIAMMONIUM ACID ORTHO-PHOSPHATE, MONO AMMONIUM DIACID ORTHO-PHOSPHATES AND MIXTURES THEREOF WITH AN AMOUNT OF AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLEN OXIDE AN BUTYLENE OXIDE WHICH IS ABOVE 0.5 TO 1.5 TIMES THE WEIGHT OF SAI ACID AMMONIUM PHOSPHATE.
Claim 2
Dependent Claim
137 words
FLAMEPROFED SYNTHETIC FIBROUS MATERIAL COMPRISING A NORMALLY FLAMMABLE SYNTHETIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENE ADIPAMIDE), POLYCAPROAMIDE, AND POLY(HEXAMETHYLENE ADIPAMIDE), WHICH MATERIAL CONTAINS A FLAME RETARDANT AMOUNT OFA REACTION PRODUCT OF AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE AND AN ALKYLENE OXIDE, SAID REACTION PRODUCT HAVING BEEN OBTANED BY REACTING AT A TEMPERATURE FROM ABOUT 0* TO ABOUT 100* CENTIGRADE, AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE CONTAINING FROM ABOUT 5 TO ABOUT 40 WEIGHT PERCENT OF AN ACID AMMONIUM PHOSPHATE SELECTAED FROM THE GROUP CONSISTING OF DIAMMONIUM ACID ORTHO-PHOSPHATE, MONO AMMONIUM DIACID ORTHO-PHOSPHATES AND MIXTURES THEREOF WITH AN AMOUNT OF AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLEN OXIDE AN BUTYLENE OXIDE WHICH IS ABOVE 0.5 TO 1.5 TIMES THE WEIGHT OF SAI ACID AMMONIUM PHOSPHATE.
Claim 3
Dependent Claim
23 words
flameproofed synthetic fibrous material as claimed in claim 1 wherein the material comprises at least 1.0 percent by weight of said reaction product.
Claim 4
Dependent Claim
18 words
Flameproofed synthetic fibrous material as claimed in claim 1 wherein the acid ammonium phosphate is diammonium acid phosphate.
Claim 5
Dependent Claim
16 words
Flameproof synthetic fibrous material as claimed in claim 1 wherein the alkylene oxide is ethylene oxide.
Claim 6
Dependent Claim
14 words
Flameproofed synthetic material as claimed in claim 1 wherein the synthetic material is poly(m-phenyleneisophthalamide).
Claim 7
Dependent Claim
26 words
Flameproof synthetic fibrous material as claimed in claim 2 wherein the material comprises from about 5.0 to about 15 percent by weight of said reaction product.
Claim 8
Dependent Claim
14 words
Flameproofed synthetic material as claimed in claim 2 wherein the synthetic material is poly(m-phenyleneisophthalamide).
Claim 9
Dependent Claim
30 words
Flameproofed synthetic fibrous material as claimed in claim 3 wherein the synthetic material is poly(m-phenyleneisophthalamide), the acid ammonium phosphate is diammonium acid phosphate, and the alkylene oxide is ethylene oxide.
Claim 10
Dependent Claim
147 words
THE PROCESS WHICH COMPRISES THE STEPS OF TREATING A NORMALLY FLAMMABLE SYNTHETIC POLYMER MATERIAL SELECTED ROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENE ADIPAMIDE), POLYCAPROAMIDE, AND POLY(M-PHENYLENEISOPHTHALAMIDE) WITH A REACTION PRODUCT O AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE AND AN ALKYLENE OXIDE, SAI REACTION PRODUCT HAVING BEEN OBTAINED BY REACTING AT A TEMPERATURE FROM ABOUT 0* TO 100* CENTIGRADE, AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE CONTAINING FROM ABOUT 5 TO ABOUT 40 WEIGHT PERCENT OF AN ACID AMMONIUM PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF DIAMMONIUM ACID OTHOPHOSPHATE, MONO AMMONIUM DIACID ORTHO-PHOSPHATES AND MIXTURES THEREOF WITH AN AMOUNT OF AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE WHICH IS ABOUT 0.5 TO 1.5 TIMES THE WEIGHT OF SAID ACID AMMONIUM PHOSPHATE OF DEPOSIT A FLAME RETARDING AMOUNT OF SAID REACTION PRODUCT ON THE PLYMER MATERIAL.
Claim 11
Dependent Claim
147 words
THE PROCESS WHICH COMPRISES THE STEPS OF TREATING A NORMALLY FLAMMABLE SYNTHETIC POLYMER MATERIAL SELECTED ROM THE GROUP CONSISTING OF POLY(HEXAMETHYLENE ADIPAMIDE), POLYCAPROAMIDE, AND POLY(M-PHENYLENEISOPHTHALAMIDE) WITH A REACTION PRODUCT O AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE AND AN ALKYLENE OXIDE, SAI REACTION PRODUCT HAVING BEEN OBTAINED BY REACTING AT A TEMPERATURE FROM ABOUT 0* TO 100* CENTIGRADE, AN AQUEOUS SOLUTION OF AN ACID AMMONIUM PHOSPHATE CONTAINING FROM ABOUT 5 TO ABOUT 40 WEIGHT PERCENT OF AN ACID AMMONIUM PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF DIAMMONIUM ACID OTHOPHOSPHATE, MONO AMMONIUM DIACID ORTHO-PHOSPHATES AND MIXTURES THEREOF WITH AN AMOUNT OF AT LEAST ONE ALKYLENE OXIDE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE AND BUTYLENE OXIDE WHICH IS ABOUT 0.5 TO 1.5 TIMES THE WEIGHT OF SAID ACID AMMONIUM PHOSPHATE OF DEPOSIT A FLAME RETARDING AMOUNT OF SAID REACTION PRODUCT ON THE PLYMER MATERIAL.
Claim 12
Dependent Claim
12 words
The process as described in claim 9 wherein the polymer is poly(m-phenyleneisophthalamide).
Claim 13
Dependent Claim
20 words
The process as described in claim 10 wherein the treated material has an Oxygen Index of at least about 40.
Claim 14
Dependent Claim
21 words
The process as described in claim 11 wherein the treated material has an Oxygen Index of about 55 to about 60.
Claim 15
Dependent Claim
148 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 an aqueous solution of an acid ammonium phosphate acid and an alkylene oxide, said reaction product having been obtained by reacting at a temperature from about 0* to about 100*C an aqueous solution of an acid ammonium phosphate containing from about 5 to about 40 weight percent of an acid ammonium phosphate selected from the group consisting of diammonium acid ortho-phosphate, monoammonium acid ortho phosphates and mixtures thereof with an amount of at least one alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide which is about 0.5 to 1.5 times the weight of said acid ammonium phosphate, and b. drying the treated synthetic polymer material.
Claim 16
Dependent Claim
148 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 an aqueous solution of an acid ammonium phosphate acid and an alkylene oxide, said reaction product having been obtained by reacting at a temperature from about 0* to about 100*C an aqueous solution of an acid ammonium phosphate containing from about 5 to about 40 weight percent of an acid ammonium phosphate selected from the group consisting of diammonium acid ortho-phosphate, monoammonium acid ortho phosphates and mixtures thereof with an amount of at least one alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide and butylene oxide which is about 0.5 to 1.5 times the weight of said acid ammonium phosphate, and b. drying the treated synthetic polymer material.
Claim 17
Dependent Claim
16 words
The process as claimed in claim 13 wherein the normally flammable synthetic polymer material is poly(m-phenyleneisophthalamide).
Claim 18
Dependent Claim
22 words
The process of claim 13 wherein the treated material contains about 5.0 to about 15 percent by weight of the reaction product.
Claim 19
Dependent Claim
25 words
The process as claimed in claim 14 wherein the aqueous solution is a solution of diammonium acid phosphate containing about 10 percent of said salt.
Claim 20
Dependent Claim
23 words
The process of claim 14 wherein the aqueous solution is a solution of monoammonium diacid phosphate containing about 10 percent of said salt.
Claim 21
Dependent Claim
14 words
The process as claimed in claim 15 wherein the alkylene oxide is ethylene oxide.
Claim 22
Dependent Claim
27 words
The process of claim 16 wherein the amount of ethylene oxide reacted to about 1 to 1 1/2 times the weight of the diammonium acid phosphate present.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |