SU517268A3 - Method for flame retardant finishing of fibrous material - Google Patents

Description

(54) METHOD: FIREPROOF FINISHING FIBER

MATERIAL 4 at the hydroxyl group of the residue 4,5 dioximidazolidone-2. Metholic compounds of urea, ethylene urea or melamine are preferred. Ethers of these aminoplast precondensates can also be used together with the reaction products of the reaction. For example, ethers of alkanols, in particular methanol, ethanol, n gfopanol, isopropanol, n "butanol, are preferred. or pentanol. | It is desirable that these aminoplastic precondensates are soluble in water, e.g., pentamethyl melamine dimethyl} ether or trimethymethyl methyl ether, to be subject to flame retardant treatment of organic fibrous materials, for example, wood (other wood), paper, furs, skins or preferably textiles, Particularly polyamide fibrous materials, cel-pyolose, celulose esters or polyesters, preferably wool fabrics, polyesters or polyester / cellulose blended fabrics with a ratio of 1: 4-2: 1, so-called e 2O / 8o, 26/74, 50/50, or 67/33 poly efirnotsellyuloznye blended fabric. Aqueous solutions of the mixture used for the flame retardant finishing of organic fiber fabrics, 5pcs usually contain g / l, preferably, in particular, 350-560 g / l, component 1 and 20 to 200 g / l, preferably 40-120, component 2 “Solutions, mixtures usually acidic, neutral or slightly alkaline. These solutions may, if necessary, contain other additives., For long, “aa ..., ..., formation on the fabric of a thicker layer L, it is advisable to inject OD-0.5% of high molecular weight polyethylene glycopes; add conventional plastic (grrr, "for example, aqueous polyethylene emulsion I or an emulsion of silicone oil. J4 For I improving the mechanical strength of the fibers, copolymers, such as / V-magnetilacrylamide or cationic, can be introduced into the impregnating solutions. For example, | water emulsions of copolymers of 0, salt alkali metal oi, y3-eth lennasylaminna mono-carboxylic acid, 0.25-30% / V-methylolamide or D / -methylolamide, ether tX, / -ethylenically unsaturated mono- / 56, or dicarboxylic acid and ;. from 99.560%. at least another polymerized compound. These copolymers, as well as the method of their half-f, are known. The use of such a copolymer can increase the strength of a rae-1 burst and abrasion of the fibrous material being worked. The polymers, as well as plasticizers, are expediently added in an amount of, for example, 1-10% relative. I am but the amount of condensation product .; / The introduction of curing initiators, such as ammonium chloride, ammonium dihydrogen phosphate, phosphoric acid, chlorine® magnesium or zinc nitrate, is possible, but usually not necessary, the pH value of the mixture is usually 2-7.5, preferably 4-7. The pH value, - .- ..- lllt; dnL h- /, and the pH is adjusted in a conventional manner, for example, by adding a base or an acid. Processing of the fibrous material is carried out by known methods, preferably carried out individually by impregnation on the pad, which is loaded with an aqueous solution of the mixture at room temperature. The fibrous material impregnated in this way is dried and subjected to heat treatment. It is better to dry at temperatures up to 1OO C. The heat treatment temperature is usually higher than 10 ° C, for example 10 ° -20 ° C, preferably 120-1800 ° C, and the heat treatment time is less, the higher the temperature. Heat treatment times, for example, from 30 seconds to 10 minutes. It is also possible to use wet or wet fixing or fixing with ammonia. When applying a wet method of fixation, the fabric is first dried to a residual moisture content of 5–20%, after which you. They are kept for 12-48 hours at a temperature of approximately 40-6 ° C, then they are washed and dried. In the wet mode, the post-spin JtTsJi lVi UUUUUUUe POSTs are similar, but they maintain a completely wet fibrous material under the specified CONDITIONS. When fixed with am. the treated fibrous material is first treated in a wet state with ammonia gas and then dried. Example 1. Mixed polyester cotton and paper fabrics (PEF / HB, 67/33) are plus a solution from a mixture of polycondensation 1 mol of THPC with 0.125 mol of guanidine hydrochloride and 1 mol dimethylol melamine, dried at 80-100 0 and cured for 5 minutes at 150 ° C. Then the fabric is washed for 5 minutes at 60 ° C in a solution containing, per liter, 5 ml of H „O - "- - ml (35%), 3 g of an aqueous solution of sodium hydroxide (30%) and 1 g (25 % aqueous solution of the condensation product from 1 mol of p-tert-nonylphenol and 9 mol of ethylene oxide. After that, the fabric is washed and dried.

Then fabric up to 4O

they are washed once in a washing machine (45 minutes of Tfi 6O C) in containing 4 g / l of detergent. I Next, the tissue is tested on fire bone. Fibrous material has a high fire resistance,

I PRI me R. 2. Mixed polyester cotton fabrics (PEF / HB, 67/33 I and 50/50) are supplemented with a solution from a mixture of a polycondensation product 1 mol TNRS with 0.2 mol guanilurea phosphate and 1 mol dimethylol melamine, dried at 80 and cured for 5 min. 150 ° C C, (Then the fabric is washed for 5 minutes at 60 ° C in a solution containing 5 ml of H O

(35%), 3 g of an aqueous solution of sodium hydroxide (ZO%) and 1 g of 25%

il aqueous solution of condensation product from

i mol of p-tert-nonylphenol and 9 mop of ethylene oxide. After that, the fabric is washed and dried,

Next, the fabric is washed up to 40 times in a washing machine (45 minutes at 60 ° C) in a solution containing 4 g / l of detergent. Individual fabrics were tested for fire resistance. Fabrics have high fire-.

resilience.

Example 3. Polyester cotton fabric (PEF / HB, 67/33), ethereal polynomial (PEF), cotton (HB) and wool gabardine (W) are plus solutions of 60 ° C mixtures listed in Table 1, then treated with one of specified

below ways

a) Drying at 80-1OO C, then curing for 5 minutes at 150 ° C (method of heat-setting, see Tables 1 and 2),

t (4 3 §

an

s 5 s I s: 5 in

e It w

33 ё i

I,

I

nineteen

eight

I s

II Dopopn (gomnom tefmyvayie: Sh 4-G1EF; 5 min at 4O С in a bath containing 4 g / l of sodium carbonate and 1 g / l of a 25% aqueous solution of a condensation product from 1 mol of p-tert-nonnlfenop and 9 mol ethylene oxide, then rinsing and drying; HB similar to W 4-PEF, but rinsing at boiling point; PEF / HB similar to example 2. b) Partial wet fixation or. keeping wet. After pln: ovcn material is stored at 10% residual moisture for 24 hours at 50 ° C, while the fibrous material is packed tightly. Then it is washed with cold water and 5 minutes in a bath containing 4 g / l of sodium carbonate and 1 g / l of condensation product from 1 mole of ptrep-nonylphenol and 9 mole of ethylene oxide, washed. at 60 ° C (CB at boiling point), rinsed and dried. c) Partial fixation with ammonia.

The amount of product (in g / l) when processed by the method

Product

1 mol TNRS + 0.01 mol guanidine carbonate

1 mol TNRS + 01,125 mol guanidine carbonate

Di-trimethylolmelamine

The condensation product from 1 mo p-tert-nonylphenol and 9 mol of ethylene oxide

Silicone Oil Emulsion

This product can be converted to a hydroxyl compound.

Table 3

480

395

905

905 103

84.5 103 After the addition of ksteriala at 80 ° e, it is not completely dried, Yumin is treated with ammonia and 10 minutes - in a bath containing 100 g / l of a 24% aqueous solution of ammonia with a bath module 1: 30, then at 40 ° Wash in a bath containing 5 g / l of soap and 6 ml / l. (35%), rinsed and dried, then the fabrics are washed up to 20 times for L45.MHH at 40 ° С (1Ш-ПЭФ), 60Ч1 (ПЗФ / ХБ) or 95 С (ХБ) in washing machine, in a solution containing 4 g / l of detergent; Separate samples are tested on .ign-; toyness Raw fabrics in contrast. F processed burn. The test results are shown in Table. and 4.

5172bv

13 Flame retardant handling Process Example 4. A PET / HB cotton cloth 67/33 and 50/50; plus with the following solution | (in g / l): Polycondensation product 1 mol TNRS with 0.125 mol guanidine carbonate and 2 mol Di - trimethylolmelamine Silicone emulsion (4O% -a) jpH solution 4., 5, solution absorption 70% Then the tissues are kept wet for 24 hours, rinsed with cold water and washed for 5 minutes in a bath, cd-holding, 4 g / l sodium carbonate and 1 g / l condensation product from 1 mol p-tert-nonylphenop and 9 mol ethylene oxide, propane skimming they are put and dried. After this, the fabrics are tested for fire resistance: - - -.

ij,

Claims (1)

t a b l and c. a time of burning / length of tear (in sec / cm) of PEF / HB.5O / 501ПЭФ / ХБ fabric, 7/33 BpeNffl combustion, secO Nadryv length1O11.5 Untreated tissues are burned. The invention The method of flame retardant finishing of fibrous material from natural and chemical fibers, treating it with an aqueous solution of a mixture of a polycondensation product of tetrakis (oxy) ethyl) phosphonium with guanidine and a functional compound, for example, an aminoplast, drying and heat treatment, | characterized in that, in order to increase the fire resistance and improve the textile properties of the material, use is made of a polycondensation product of 1 mol of tetrakis (oxymethyl) phosphonium with O, 02-O, 5 mol of guanidine or its derivative selected from the group; guanidine salt: guanylurea, guanylurea salt, methylol guanidine and methylol guanylurea.