Durably flame proofed textile materials
AssigneeHooker Chemicals & Plastics Corporation
InventorGeorge T. Miller
Life of this patent
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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.
Claims12
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.
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.degree. centigrade.
Dependencies are inferred from the claim text.