KR920005740A - Flame retardant treatment of fabric - Google Patents

Abstract

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Description

Flame retardant treatment of fabric

As this is a public information case, the full text was not included.

Claims (15)

(a) impregnating the substrate with a silicone compound comprising at least two active-hydrogen-reactors or their precursors, followed by an aqueous solution of an organophosphorus compound, (b) drying the substrate, and c) Flame retardant treatment of a substrate of organic fibers containing a reactor characterized by curing the substrate by heating to a temperature of at least 100 ° C. and / or treatment with ammonia. The method of claim 1, wherein the substrate made of organic fibers comprises, for example, natural cotton, ramie fibers, flax fibers, paper or cardboard viscose or cuproammonium fibers, or cellulose fibers such as cellulose acetate or cellulose propionate. How to. The method of claim 1 wherein the substrate of organic fibers comprises cellulose fibers and non-cellulose fibers such as polyester, polyamide or acrylic. A method according to claim 1, wherein the substrate made of organic fibers consists essentially of non-cellulose fibers. The method according to any one of claims 1 to 4, wherein the silicon compound is of formula (R) _a Sir ¹ _b R ² _c . Wherein (i) each of a, b may be the same or different from each other, a and b are 0, 1, 2, 3 or 4, c is 0, 1 or 2, and a + b + c is 4 ( Ii) R is such that the hydrolyzate can react or interact with hydroxyl or amide groups in the insoluble polymer, and (i) R ¹ reacts with hydroxymethyl groups and / or with ammonia or amide NH ₂ groups Where (i) R ² is an inert organic, in particular wherein said silicon compound is of the general formula R ¹ Si (OCH ₃ ) ₃ or R ¹ Si (OC ₂ H ₅ ) ₃ , wherein R ¹ is 3-substituted 1,3-propylene selected from the following groups: glycidyloxy, methacryloxy, acryloxy, chlorine, amine, cyano, ureido and 2- (aminoethyl) amino, in particular here Wherein the silicone compound is-(2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane or non- Nyltrialkoxysilane. The method according to any one of claims 1 to 5, wherein the silicone compound is applied to the substrate in an aqueous solution, the aqueous solution having a concentration of 0.1 to 10% by weight, in particular the aqueous solution being weak acid, for example Acetic acid or phosphoric acid, wherein the weak acid is present in the aqueous solution at 0.1-1% by weight. The process according to any one of claims 1 to 6, wherein impregnation (a) is achieved by treating the substrate to wet 40 to 150% with a solution containing a silicone compound or their precursors, in particular This impregnated fabric is subjected to the following treatments: (i) drying by heating at 80 to 100 ° C. for 0.1-5 minutes, (ii) heating at 90 to 150 ° C. for 0.5 to 10 minutes, and (i) 10 to 60 hours of stop time at ambient temperature, and in particular, wherein the substrate is subjected to one or more of the processes of leaving the substrate to dry incidentally. The impregnation (a) of claim 1, wherein the impregnation (a) is achieved by a tetrakis (hydroxyorgano) phosphonium compound, in particular wherein the hydroxyorgano group is of the general formula HO-C. (R ¹ R ² ) is an alpha-hydroxyorgano group having 1 to 9 carbon atoms, wherein R ¹ and R ² are the same or different from each other, and R ¹ and R ² are hydrogen or an alkyl group having 1 to 4 carbon atoms , In particular tetrakis (hydroxymethyl) phosphonium (THP) compounds, or their water-soluble self-condensates, or THP compounds and, for example, urea, biuret, guadinin, melamine or metholated melamine or A mixture of said organic nitrogen compound with a phosphorus compound, or a water-soluble condensate of an organic nitrogen compound such as a condensate or a self-condensate. The impregnation (a) according to any one of claims 1 to 8, wherein the molar ratio of the organic nitrogen compound to THP is 0.05: 1 to 0.8: 1, especially 0.25: 1 to 0.6: 1, especially 0.4: 1. Achieved by a solution comprising a pre-condensate of a THP salt and an organic nitrogen compound in a ratio of ˜0.6: 1, wherein the pH of the solution is 2 to 7.5, in particular 4 to 5, and the organophosphorus compound in the impregnation solution. The concentration of (in weight as THP ⁺ ion) is 5 to 70%, and the impregnation solution is present in the following additives, i.e., in the amount of 0.05 to 0.5% by weight of the impregnation solution. Ionic wetting agents, (ii) fabric softeners present in an amount of 0.1 to 2% by weight of the impregnating solution, (iii) ammonium present in an amount of 0.1 to 5% by weight of the impregnation solution, for example ammonium Or catalysts comprising salts of strong acids and weak bases such as chlorides or nitrates of alkaline earth metals or ammonium phosphates Method characterized in that it comprises an additive. 10. The method according to any of claims 1 to 9, wherein impregnation (a) has an organophosphorus less than 40% (as THP ⁺ ions relative to the original weight of the substrate), in particular 20-30% (the sub Treating the substrate with the impregnating solution so that it is wetted with the original weight of the straight (as THP ⁺ ions). 11. The method of claim 10, characterized in that the wet substrate is squeezed to 50-130% (by weight relative to the original weight of the substrate). 10. The method according to any one of claims 1 to 9, characterized in that the treated fabric is impregnated with 10-50% wetness with the concentrated impregnation solution by the least dropping method, in particular the least dropping method. The method according to any one of claims 1 to 12, characterized in that (c) thermosetting occurs in a stenter or baking oven with a curing time of 10 to 0.5 minutes at 100 to 180 ° C. How to. The method of claim 13, wherein the thermal curing occurs prior to ammonia curing. The process according to any one of claims 1 to 14, wherein the cured substrate is subjected to the following treatment: (i) insolubilization of the cured resin in the treated substrate, (ii) oxidation, ) Washing with basic aqueous solution and washing with water, in which an excess of oxidant is applied at 0-40 ° C. for 0.1-10 minutes to achieve oxidation (ii), which is hydrogen peroxide in a concentration of 0.5-15% by weight. Or one or more of the steps of oxidizing sodium perbong oxide at a concentration of 1-10% by weight, or oxidizing the cured substrate by aspirating or blowing a gas containing oxygen molecules through the substrate. Method characterized by application to the process. ※ Note: The disclosure is based on the initial application.