DD207740A1 - METHOD FOR THE MICROBICIDAL EQUIPMENT OF CELLULOSIC TEXTILE FIBERS AND FABRIC FIBERS - Google Patents

Abstract

THE INVENTION CONCERNS A TEXTILE RESTORATION PROCESS WHICH MAY CONVEY UNODODICTED AND ACRYLIC ACID MODIFIED CELLULOSIC TEXTILE FIBERS AND WOVEN BIOLOGICAL ACTIVITY AGAINST MICROORGANISMS (BACTERIA AND MUSHROOMS). As an active ingredient find POLYMERS ORGANIC TRIBUTYLZINN COMPOUNDS, IN PARTICULAR TRIBUTYLZINN POLYACRYLATE, USE. THESE ACTIVE SUBSTANCES WILL BE LIQUID IN LOW-WATER, WATER-SOLUBLE ORGANIC SOLVENTS; D. ACTIVE SUBSTANCES OF THE TRAENKLOESUNGEN SHOULD BE 0.05 TO 5 WEIGHT PERCENTAGE. BEFORE D. TRAENKPROZESS, THE TEXTILES FIBERS AND FABRICS IN WATER MUST BE SOULED (SOIL TIMES 1 TO 2 MINUTES) AND CONSEQUENTLY WASHED (WASHING 70 TO 90%). THE TRAENKPROCESS IS TAKEN AT NORMAL TEMPERATURE AS A RESULT OF THE ACRYLIC ACID CONTENT OF THE TEXTILES (TRAVEL TIME 5 TO 20 MINUTES FOR UNMODIFIED, 1 TO 5 MINUTES OF ACRYLIC ACID MODIFIED WOVEN FABRICS). OUTSTANDING TRAENKLOESUNG IS TAKEN FROM THE TISSUE. THE DESCRIBED PROCEDURE IS SUITABLE FOR THE MICROBICIDAL FURNISHING OF TEXTILES IN HOSPITALS (BED LINEN, KITTEN, TOWELS) TO CONTROLLED HOSPITALISM. TECHNICAL TEXTILES (TABLE TABLES, COVER PLANES, BAG MATERIALS) MAY EFFECT THIS EQUIPMENT BEFORE THE APPLICATION WITH MILK MUSHROOMS OR WITH THIS EQUIPMENT. BEING PROCESSED.

Description

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VEB ΟΉΕϊ'ΠΕΚΟΙΐΒΉϊΑΤ Β IT TEEPELD

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Yerf teach the microbicidal equipment cellulose-containing textile fibers and Plachenfasergebilden

Field of application of the invention

The invention relates to a method of microbicidal treatment of cellulose-containing textile fibers and plank fiber structures, in particular of cotton and cotton-wool fabrics and their acrylic acid graft copolymer, with triorganotin compounds.

Characteristic of the known technical solutions

It is known that monomeric organic tin compounds in aqueous formulation can be used for the microbicidal finishing of textiles (DE-AS 1 567 117, DE-OS 2 313 687, DE-OS 2 402 954).

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The disadvantage is that the monomeric organotin compounds used, in particular the trialkyltin compounds, smell very unpleasant and can cause skin or mucosal irritation. Y / eiter these agents are relatively resistant to washing, especially in washing processes above 90 ⁰ C in strongly alkaline washing · The long-term behavior with respect to the active loss by evaporation, chemical cleaning processes or weathering can not satisfy either. , , ,

Object of the invention

The aim of the invention is to provide cellulose-containing textile fibers and fabrics with less toxic and more resistant organic tin compounds.

Explanation of the essence of the invention ;

The invention is based on the object, by a finishing process, the ,, unmodified. and. to treat acrylic acid-modified cellulose-containing polyethylene fibers and fabrics with polymeric organic trialkyltin compounds »

It has now been found that the object is achieved by applying polymeric trialkyltin compounds which are dissolved in low-boiling, water-miscible organic solvents or solvent mixtures, to water-swollen cellulose-containing fibers or fabrics.

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As active ingredients, copolymers of Sributylzinnacrylat with acrylic acid or butyl methacrylate, but mainly Tributylzinnpolyacrylat (degree of polymerization 10) are used. The active compounds are dissolved in low-boiling, water-miscible organic solvents or solvent mixtures. For Tributvlzinnpolyacrylat acetone has proved to be advantageous. The active ingredient concentration in the solvent should be between 0.05 and 5 percent by weight, preferably 0.5 percent by weight. '

Tor the impregnation process, it is necessary to activate the cellulosic fibers or, tissue by swelling in water. The fiber swelling promotes the diffusion process of the active ingredients in the interior of the Paser. At a . Water temperature of 20 ⁰ C, swelling times of 1 to minutes are sufficient. Then the excess water must be squeezed off. The squeezing effect should be between .70 and 90 % .

The impregnation process takes place at room temperature (20 to 25 ⁰ G). In order to ensure sufficient biological effectiveness in the finished fibers, the bathing times should be between 5 and 20 minutes, depending on the active concentration of the silting solution. In a discontinuous soaking process, the plotting ratio (tissue mass: impregnation solution) can be varied within wide limits ^J. In order to achieve a homogeneous distribution of the active substance, a liquor ratio of 1: 1 should not be exceeded, however, in the case of unmodified fabrics. In a continuous soaking process, attention must be paid to a constant concentration of active ingredient in the impregnation solution.

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Further improvement / durability and durability of the disinfecting equipment can be achieved with acrylic modified cellulosic fibers and fabrics. The acrylic acid content of the textiles may be between 2 and 20 weight percent, preferably about 5 weight percent. The treatment is analogous to unmodified fabrics "Only at temperatures of 20 C are enough watering times of 1 to 5 minutes to impart microbicidal efficacy to the fabrics. The liquor ratio can be 1:20."

After impregnation, the excess impregnation solution is squeezed off and the fabric is dried. This process according to the invention also makes it possible to equip microcrystalline acid-modified synthetic fibers and fabrics (polyesters, polyamides). In this case, tissue swelling with water can be dispensed with. The improvement in durability and durability of the microbicidal equipment becomes clear when an unmodified bovine rayon / viscose fiber fabric and a cotton / polyester fiber fabric equipped with a monomeric organic tin compound (tributyl zinnoside) and a tributyltin polyacrylate-treated acrylic acid-modified fabric are treated as the same. Conditions Washed 40 times in the Thermo-Disinfection Washing Process · The acrylic acid-modified fabrics finished with the polymeric compound still show a clear effect in the inhibition test against bacteria and fungi *

embodiment

The following examples are intended to illustrate the invention without, however, limiting it.

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example 1

the milcrobizide equipment unmodified Bäumwoll / Yiskosefasergewebe (75% cotton, 25% ITEP) and cotton / polyester fabric (50% cotton, 50% EB), the fabric immersed in "water of 20 ⁰ G for two minutes' · The excess water is to 80 % squeezed · The prepared fabric is treated in a 0.5% tributyltin polyacrylate solution for 15 minutes at 20 ^° C. · The solvent used is acetone · The liquor ratio is 1:20 · The excess impregnation solution is then squeezed off and the fabric is squeezed with warm air dried. \

Example 2

The textile fabrics described in Example 1 are chemically or radiation-chemically modified with acrylic acid, the content of grafted acrylic acid being 5% by weight. Prior to the soaking process, the modified tissues are immersed in 20 C of water within

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2 minutes enabled .. The excess water is · .with a squeezing effect of 80% * The removed tissue are activated in a 0.5 follow Tributylzinnacrylat solution for a period of time, soaked in 2 minutes; as solvent is acetone * The temperature is 20 ⁰ G and the liquor ratio 1: 50 »compartment to the impregnation process, the excess impregnation solution was removed by squeezing the fabric and getrockne with hot air

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Claims (2)

- 6 - 2254 invention claim Process for the microbicidal finishing of aellulose-containing textile fiber !! and J'lächenf asergebilden and their acrylic acid graft copolymers with polymeric Trialkylzinnyerbindungen, characterized in that the Tesrtilfasem and tissue are swollen with 'water within 1 to 2 minutes at 20 ⁰ C, the excess water with a Abquetscheffelet from 70 to 90 % , the test fiber and tissue are treated with a 0.05 to 5% aqueous solution of polymeric uracyltin compounds in low boiling, water-miscible organic solvents at 20G and the excess trans-solution is squeezed off. · .'- 2. Method according to item 1 / -characterized in that · in the case of re-modified cellulose-containing textile fibers and fabrics, the impregnation times are 5 to 10 minutes. - 7 -. '2254 Terassen after. Item 1, characterized in that acrylic acid-modified cellulosic 3 est estilfasern fibers and tissues with a Acrjlsäuregeiialty 2 to 20 percent by weight "are treated and the soak times of 1 to 5 minutes. Procedure according to points 2 or 3 ». characterized. in that tributylamine polyacrylate is used as the active ingredient vn.rd ·