DE1469306A1 - Process for treating textiles that consist entirely or predominantly of cellulose and / or regenerated cellulose fibers - Google Patents

Description

Aura treatment of textiles,

which are wholly or predominantly made of cellulose and / or

IDa is known that the tendency to wrinkle 'of textiles made of cellulose and / or regenerated cellulose fibers by treatment with v / t-sseri _o t;! Compounds n solutions of methyl o is greatly reduced by Alkylenharnstoffsn and acids or those nucleating catalysts with subsequent drying and condensation ,

"(If the textiles after padding to a moisture level, which is significantly below the moisture that can be achieved by squeezing or spinning off the goods, but at least about a month or more Conditioning moisture corresponds, brought and in this state stored for a long time, about a few to 24 hours at normal or moderately elevated temperature, then rinsed and dried, so they also get NaS crease resistance, i.e. one more or less extensive wrinkling when moist.

For this process, acidic catalysts are added to the liquor, which lower their pH ~ V7ert very much, what by application strong acids is achieved.

It has now been found that it is also expedient to work in such a way that mixtures of phosphoric acids and ammonium salts of strong acids are added to the liquors as hardeners. The pH value of the liquors is not lowered as much as by hydrochloric acid and the like, so that an increased elimination of formaldehyde can occur during finishing, but these mixtures still work when storing the impregnated goods, which are also mentioned above

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Best moisture content, in such a way that the textiles are also wet = crease / earth »

Ammonium salts of strong acids, such as ammonium chloride, alone lower the pII-7 / ert of the fleets are constantly standing with them, while the Combination of iliocphic acid and aimium chloride according to the invention immediately gives the fleet a certain reduced level, which also remains fairly constant over several days The fleet and achievable effects are largely the same.

The advantage of using the catalyst mixture described above Compared to the use of strong acids alone, there is the fact that the degree of ice cream effect when using oval brighteners is less affected.

The alkylene urea resins are mono- or direthyl compounds ^{: i} of cyclic alkylene ureas in which 1 or 2 II atoms on different carbons can be replaced by hydroxyl groups, or the ethers of these methylol compounds with saturated monohydric alcohols 1 to 4, especially 1 to 2 carbon atoms are suitable. Cyclic alkylene ureas which may be mentioned are ethylene, propylene, dioxyethylene, oxypropylene oxy-fuel, or acetyl sulphite. Also compounds of such ethylol compounds or their ethers can be used.

The recipe from phosphoric acid and the ammonium salt of strong acids Can in weight ratios of 10-60 ^ phosphoric acid: 90-4C ^ a Ammonium salt can be applied. Particularly suitable phosphoric acid is o-phosphoric acid, but also meta- or pyrophosphoric acid are useful. The ammonium size of strong acids and those of Hydrochloric, nitric, sulfuric or oxalic acid, with that of the saltsMure is preferred.

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The residual moisture of the textiles is about 4 - 2O; o with natural cellulose fibers and 6 - 25 $ for 2generate cellulose fibers.

Suitable textiles are those made of cellulose and / or Hegenerate cellulose fibers exist. If necessary, can also Mixed fabrics with other fibers, such as fully synthetic, are finished according to the method described, but the proportion must be of cellulose or itegenerate cellulose fibers predominate. The Hestfeuehtigkeit can laser with such mixed fabrics due to the significantly lower conditioning moisture of the fully synthetic are still correspondingly lower.

The treatment liquors according to the invention contain about 6 to 25% of the ICC ^ igen Llethylolverbindungen or their ethers. If necessary, some of the methylol compounds, up to a maximum of 50% of their weight, can be replaced by nitrogen-free formaldehyde reaction products with monohydric or polyhydric alcohols up to 4 carbon atoms.

Treatment of undyed textiles that are predominantly natural Cellulose fibers contain, methylol compounds are preferred of propylene or oxypropylene urea, in the case of colored ones Textiles preferably methylol compounds of dioxyethylene urea used. The Eatalysatorengemis.ch from phosphoric acid and ammonium salt is preferably C.8-2.5 percent by weight added to the liquor.

When treating textiles that are mostly regenerated Containing cellulose fibers are preferably methyl compounds of i'ithylen- b ^ iv. Dioxyethylene ureas or acetylene diurea at (. an ICatalyst concentration in the liquor of preferably 1 - 4 ;: applied.

9813/1154

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Example 1: Sin whiter, mereerized, not yet optical lightened cotton poplin with a square meter weight of 125 g, ■ with a? Soaked liquor, which 150 g 1,3-Dimethylolperhydra =. pyrimidinone (100%), the mixture according to the invention of 12 g

Ammonium chloride, 4% o-phosphoric acid 85% and 3 g of an optical brightener (C * J. Fluorescent brightening agent 24) per liter. It is squeezed off to a liquor pickup of 65 $ and dried at a drying temperature of 100 ⁰ G in smooth state to a residual moisture of 6 $. It is then rolled up smoothly, left to remain in the absence of air for 20 hours at room temperature. then washed out, neutralized, rinsed thoroughly and dried without heating «

The above liquor shows good stability, no calcium absorption fertilizers and low formaldehyde development during drying. The following effects were found on the treated poplin: Dry crease angle (average of warp and weft) 128 °, hate crease angle 146 ° and a loss of strength of $ 28 towards the. untreated goods. The whiteness of the fabric was very good. ■ "

Example 2: A reactively colored, light blue batiste with a square meter weight of 84 g is padded with a liquor (squeeze effect 70 ^), consisting of: 280 g / l of a 5Obigen dirnethyloldi = hydroxyethylene urea resin, 8 g / l ammonium chloride, 3 g / 1 o-phosphoric acid (85%) and 6 g / l maleic acid. Then it is dried to a residual moisture of $ 7, rolled up smooth and after a dwell time of 16 hours 'g finished as in example * 1, _t '

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Good dry and wet crease angles were found with good retention of bite texture. The liquor could be kept for several days. Die'G-eruchtsbelästigung (formalin) in the drying of the ^r-G ewebes was very low. ■ ^; '' ■ ^:

Example 3 · ί A printed Dekorationsrlps' from cell-wool is treated with a liquor containing per liter 120 g Mme thyloldihydroxyäthylen * = ^ urea ^"lÖ0;! G G-lykolhalbacetal (prepared from 1 mole Äthylenglykoi ^r und'2 moles of formaldehyde) y Contains 10 g of ammonium nitrate and 10 g of phosphoric acid, padded, pre-dried to 20% moisture and left to lie in a rolled-up state for 2G hours at normal temperature, then neutralized , " rinsed ^"and; dried, liie y / are has good quality and drying resistance and the liquor has a long shelf life. ''

Claims (2)

Expectations: 1. The process of handling textiles that consist entirely or predominantly of cellulose and / or hegenerate cellulose fibers, by treatment with aqueous liquors which contain methylol = compounds of alkylene ureas, their alkylene groups and their methylol groups may optionally be etherified or acidic Hartungsmittelh, hours of Terweilenlassen at ordinary or moderately elevated temperature, washing and drying the feel without Naeherhltzung, characterized in that as the curing agent Semische of phosphoric acid and ammonium salts of strong acids. · Used and after the removal of the liquor removal to a moisture content of about 4 b ^ B 18? & For natural cellulose fibers and about 6 to 25% for fiber cellulose fibers BADOFIIGiNAL pre-dried textiles can be left to linger. 2. Proceed according to. Claim 1, since it is marked that a hardening agent of 10 to 40% phosphoric acid and 9C to 60% airmonium salt is used. ORIGINAL BATHROOM 809813/1186