US3877974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardants for blends of natural and synthetic fibers
Assignee: White Chemical Corp
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Filing: 1972-10-25
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Granted: 1975-04-15
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Expires: 1992-10-25
Abstract
Abstract A process for rendering synthetic materials, of synthetic fibers or mixtures of the same flame resistant which entails employing water insoluble flame retardant agents which are treated as colorless pigments, reduced to extremely finely divided condition, suspended in latex medium and applied as such or as part of a dispersed dye paste to the fabric, dried and set in place. The active flame retardant agents are brominated organic chemical compounds, and reduced to a fine state of subdivision, preferably under two microns, average particle diameter, which compound is supported in an aqueous suspension with a colloidal protective agent, and thus, is in a form for blending in a binder, plastic resin latex, so that when the composition is dried and cured in place on the fabric, a very useful retardant effect is obtained which is durable to laundering and dry cleaning, and the hand of the fabric is preserved.
Inventors
- 👤 Vladimir Mischutin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/325; D06M13/338; C; C08; C08K; C08K13/00; C08K13/02; D06M11/00; D06M11/07; D06M11/11; D06M11/20; D06M11/32; D06M11/36; D06M11/45; D06M11/46; D06M11/47; D06M11/77; D06M11/79; D06M13/02; D06M13/08; D06M13/10; D06M13/152; D06M13/184; D06M13/207; D06M13/21; D06M13/244; D06M13/282; D06M13/292; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/693; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/16; D06M2101/30; D06M2101/32; D06M2200/00; D06M2200/30; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2713
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A METHOD OF RENDERING FLAMMABLE TEXTILE MATERIALS FLAME RETARDANT WHICH COMPRISES: TREATING SAID MATERIALS WITH A FLAME RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF ABROMINATED, ORGAIC AROMATIC OR CYCLIC COMPOUND AD A METALLIC OXIDE, IN AQUEOUS DISPERSION, IN ADMIXTURE WITH AN AQUEOUS EMULSION OF A SUITALEE HIGH MOLECULAR WEIGHT POLYMERIC ADHESIVE BIN BINDER, SAID BROMINATED COMPOUND AND SAID METALLIC OXIDE BEING SOLIDS AT ROOM TEMPERATURE, SUBSTANTIALLY TOTALLY INSOLUBLE IN WATER, HAVING BEEN REDUCED TO AN AVERAGE PARTICLE SIZE BELOW 2 MICRONS, AND BEING IN WEIGHT RATIO OF 1:4 PARTS OF BROMINATED COMPOUND OF 0.1:1 PART OF METALLIC OXIDE, SAID HIGH MOLECULAR WEIGHT POLYMERIC BINDER BEING PRESENT IN AMOUNT SUFFICIENT TO SECURE SAID BROMINATED ORGANIC COMPOUND AND METALLIC OXIDE FLAME RETARDANT COMPOSITION TO SAID MATERIAL, AND DRYING AND CURING SAID TREATED MATERIAL, WHEREIN THE TOTAL AMOUNT OF FLAME RETARDANT DEPOSITED ON SAID MATERIAL IS EFFECTIVE TO REDUCE THE FLAMMABILITY OF THE TEXTILE AND IS DURABLE TO LAUNDERING AND DRY CLEANING.
Claim 2
Independent Claim
157 words
A METHOD OF RENDERING FLAMMABLE TEXTILE MATERIALS FLAME RETARDANT WHICH COMPRISES: TREATING SAID MATERIALS WITH A FLAME RETARDANT COMPOSITION CONSISTING ESSENTIALLY OF ABROMINATED, ORGAIC AROMATIC OR CYCLIC COMPOUND AD A METALLIC OXIDE, IN AQUEOUS DISPERSION, IN ADMIXTURE WITH AN AQUEOUS EMULSION OF A SUITALEE HIGH MOLECULAR WEIGHT POLYMERIC ADHESIVE BIN BINDER, SAID BROMINATED COMPOUND AND SAID METALLIC OXIDE BEING SOLIDS AT ROOM TEMPERATURE, SUBSTANTIALLY TOTALLY INSOLUBLE IN WATER, HAVING BEEN REDUCED TO AN AVERAGE PARTICLE SIZE BELOW 2 MICRONS, AND BEING IN WEIGHT RATIO OF 1:4 PARTS OF BROMINATED COMPOUND OF 0.1:1 PART OF METALLIC OXIDE, SAID HIGH MOLECULAR WEIGHT POLYMERIC BINDER BEING PRESENT IN AMOUNT SUFFICIENT TO SECURE SAID BROMINATED ORGANIC COMPOUND AND METALLIC OXIDE FLAME RETARDANT COMPOSITION TO SAID MATERIAL, AND DRYING AND CURING SAID TREATED MATERIAL, WHEREIN THE TOTAL AMOUNT OF FLAME RETARDANT DEPOSITED ON SAID MATERIAL IS EFFECTIVE TO REDUCE THE FLAMMABILITY OF THE TEXTILE AND IS DURABLE TO LAUNDERING AND DRY CLEANING.
Claim 3
Dependent Claim
17 words
The method in accordance with claim 1 whereby drying is carried out at elevated temperatures of 100*-175*C.
Claim 4
Dependent Claim
16 words
The method in accordance with claim 1 in which the flame retardant is applied by padding.
Claim 5
Dependent Claim
17 words
The method in accordance with claim 1 in which the flame retardant is applied by knife coating.
Claim 6
Dependent Claim
56 words
The method of claim 1 wherein the brominated solid organic material is selected from the group consisting of: Polybrominated biphenyl Polybrominated biphenyl oxide Polybrominated benzene Polybrominated toluene Polybrominated chlorotoluene Polybrominated phenol Polybrominated aniline Polybrominated benzoic acid Tris phosphates of polybrominated phenols Polybrominated cyclopentane Polybrominated cyclohexane Polybrominated cyclooctane Polybrominated cyclodecane Polybrominated cyclododecane Hexachlorocyclopentadieno-dibromocyclooctane and N,N'' -ethyl-bis (dibromo-norbornene-dicarboximide).
Claim 7
Dependent Claim
27 words
The method of claim 1 wherein the metallic oxide is selected from the group consisting of: Al, Ga, Si, Ge, As, Sb, Bi, Ti and Zr oxides.
Claim 8
Dependent Claim
42 words
The method of claim 1 wherein the latexes are selected from the group consisting of: Polymers of esters of acrylic acid Styrene butadiene copolymers Acrylonitrile-styrene-butadiene copolymers Copolymers of ethyl acrylic-N-methylol acrylamideacrylonitrile-acrylic acid Vinyl acetate-ethyl acrylate copolymers Butyl acrylate-N-methylol acrylamide-acrylonitrile, and Polyurethane polymers.
Claim 9
Dependent Claim
24 words
A textile material inherently flammable, rendered flame resistant by the impregnation with a flame retardant composition in accordance with the process of claim 1.
Claim 10
Dependent Claim
111 words
The method of claim 1 wherein the brominated compound is selected from the group consisting of: Polybrominated biphenyl Polybrominated biphenyl oxide Polybrominated benzene Polybrominated toluene Polybrominated chlorotoluene Polybrominated phenol Polybrominated aniline Polybrominated benzoic acid Tris phosphates of polybrominated phenols Polybrominated cyclopentane Polybrominated cyclohexane Polybrominated cyclooctane Polybrominated cyclodecane Polybrominated cyclododecane Hexachlorocyclopentadieno-dibromocyclooctane, and, N,N'' -ethyl-bis (dibromo-norbornene-dicarboximide), the metallic oxide is selected from the group consisting of: Al, Ga, Si, Ge, Sb, Bi, Ti, and Zr oxides, and the latex is selected from the group consisting of: polymers of esters of acrylic acid styrene butadiene copolymers acrylonitrile-styrene-butadiene copolymers copolymers of ethyl acrylate-N-methylol acrylamide-acrylonitrile-acrylic acid vinyl acetate-ethyl acryLate copolymers butyl acrylate-N-methylol acrylamide-acrylonitrile and polyurethane polymers.
References Cited (Backward Citations)
US2668294A
Cited
US2912392A
Cited
US3047425A
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US3093599A
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US3668155A
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US3770577A
Cited
US3658634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |