DE1594940A1 - Equipment for textile goods - Google Patents

Description

Badische Anilin- & Soda-Fabrik AG

Our symbols: O.Z. 25 137 Rt / Fe ludwigshafen / Rhein, September 27th, 1967

Finishing agents for textile goods

It is known that textile fiber material which contains natural or regenerated cellulose or consists of it, with H'-methylol or N-alkoxymethyl compounds of urea or thioureas or impregnated with mixtures of such compounds in an aqueous bath, dried, possibly a mechanical one Subjects to treatment and in the presence of acids or acid-releasing agents as catalysts at higher temperatures heated. Such a treatment can be used to produce anti-crease, anti-shrink, embossing and chintz finishes. These known agents have a number of application-related disadvantages. Their aqueous solutions are very sensitive against the catalysts required for the equipment. Baths that contain the known agents and catalysts

therefore, become unusable within a short time and must / quickly be used. In addition, the equipment with the dimethylol or dialkoxymethyl compounds of the substance or of the thiourea in most cases to tissues that have a have a hard handle, which have only moderate wash resistance in acidic media and very low chlorine fastness.

909835 / M8b

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Since the dimethylol and dialkoxymethyl compounds of urea and thioureas are solid crystalline compounds in pure form represent, they cause difficulties with automatic dosing.

It has now been found that equipments are obtained which equip the equipments with dimethylol and dialkoxymethyl compounds
Surpass urea and thioureas in their properties, result in better chlorine fastness, have a good resistance to hydrolysis and produce a soft feel on the fabric, if one uses the
Contains or consists of natural or regenerated cellulose, substances of the general formula

p CH ₂ -OR ₁

N-CO-N (I)

R ₁ -O-CH ₂ H

used in which the radicals R _{1 are} identical or different alkyl radicals having 1 to 4 carbon atoms or radicals of the formula
- (CHp) -OR, where R is an alkyl radical with 1 to 4
Denotes carbon atoms and η is 2 or 3. Preference is given to those substances of the formula I in which the radicals R _{1 are} alkyl radicals having 1 to 3 carbon atoms or methoxyethyl radicals.

As examples of the designs to be used according to the invention

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armor agents are: Ν, Ν, Ν'-trimethoxymethylurea, Ν, ίί, ΙΓ-triethoxymethylurea, Ν, Ν, Ν'-tri-methoxyethoxymethylurea. The compounds of the formula I can be prepared according to patent (patent application B 94 398 IVb / 12 o) c

The finishing agents of the formula I are used in a manner known per se, preferably in the form of an aqueous impregnation bath. The concentration of finishing agents depends in the usual way on the desired effect. It is generally between 50 and 300 g per liter. The material to be treated is soaked in the usual way with the impregnation bath. A padder is preferably used for this. The impregnated material is freed from superfluous impregnating liquid in a manner known per se by squeezing it off. One can dry the impregnated fiber material, and then in the presence of acidic or potentially acidic catalysts at a temperature up to 180 ⁰ O preferably at 120 to 160 ⁰ G, heat. In general, the reaction is complete in 1 to 10 minutes under these conditions. The fiber material can be shaped mechanically during drying or afterwards, for example by upsetting, crimping, ironing, calendering, embossing or pleating. After the reaction of the substances of the formula I, the fiber material has a high drying angle of crease. In addition, the shape communicated to the fiber material is fixed on it in a wash-proof manner. The treated material can be washed, rinsed and dried in the usual way.

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You also have the very advantageous option of leaving the impregnated and squeezed-off G-ut wet and thus swollen or to dry it to a certain moisture content and while maintaining the swollen state or the set moisture content at normal or elevated temperature, preferably at a temperature of up to at 50 C, in the presence of acidic and / or potentially acidic catalysts. The reaction with the cellulose generally takes 5 to 30 hours under these conditions, and less at temperatures above 50 °. This process makes it possible, in a simple and reliable manner, to equip fiber material which contains or consists of cellulose in a single operation so that it has high to very high wet crease angles of HO ⁰ C and more and average dry ^{crease angles of 110 0} C and more. By varying the process conditions, one has the ability to adapt the height and difference of the wet and dry wrinkle angles to the respective needs.

Acid and potentially acid catalysts are generally known and used for the purposes of crease-proof finishing. As such, for example, inorganic and organic acids such as sulfuric acid, hydrochloric acid, phosphoric acid, Boric acid, formic acid, acetic acid, oxalic acid, tartaric acid, maleic acid and salts which react acidic or which form acids due to the action of heat and / or hydrolysis, e.g. B. ammonium salts and amine salts of strong acids, magnesium chloride, aluminum chloride,

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Zinc chloride and zinc nitrate. The reaction of the finishing agents to be used according to the invention "is, as mentioned, in the presence these catalysts carried out. You can do that by the catalysts, preferably in the form of aqueous ones, before or after the material to be treated is impregnated Solutions to this applies. Preferably, however, the catalysts are added directly to the one containing the finishing agents Impregnation bath. The concentration of the catalysts is determined in the specific finishing process used usual area chosen.

In general, catalyst concentrations between 1 and 40 g / liter have proven useful for equipment at high temperatures, while for the finish it is in the swollen state of the fiber, i.e. H. in the presence of considerable amounts of water, and at low reaction temperature is known to be necessary can use strongly acidic catalysts in a higher concentration.

When used together with catalysts in one bath, the finishing agents according to the invention have a further advantage over the dimethylol and dialkoxymethyl compounds of urea and thiourea noticeable. They have a much better hydrolysis resistance than the N, N'-dimethylol and N, N'-dialkoxymethyl compounds of urea and thioureas. This has the consequence that finishing baths, which the finishing agents according to the invention together with the ca-

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contain catalysts, are significantly less sensitive to high catalyst contents and are significantly more storage-stable than those, which instead use the dimethylol or dialkoxymethyl compounds of urea and thioureas. Nevertheless, surprisingly, they react relatively quickly to the fiber.

Along with the new equipment, the common ones can also be used nitrogenous and nitrogen-free methylol and alkoxymethyl compounds, ζ. B. Dimethylolurea and Dime thoxyme thy lha rns toff, the methyl and alkoxymethyl compounds of cyclic ureas, such as ethylene urea, propylene urea, Grlyoxalmonourein, triazinones, urons, melamine and other aminotriazines, mono- and dicarbamic acid esters and polyethylene glycol formals, and compounds containing epoxy groups, e.g. B. Glykoldiglycidäther can be used. Furthermore it is possible, nor the usual hydrophobic, softening, leveling, Wetting and finishing agents as well as plastic solutions and -dispersions to be used. Water repellants are z. B. the well-known aluminum or zirconium-containing paraffin wax emulsions as well as preparations containing silicone and perfluorinated aliphatic compounds. As a plasticizer are z. B. Ethylation products of higher molecular weight fatty acids, fatty alcohols or fatty acid amides, higher molecular weight polyglycol ethers and their esters, higher molecular weight fatty acids, fatty alcohol sulfonates, stearyl-N, N-ethylene urea and stearylamidomethylpyridinium chloride called. As leveling agents, for example

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water-soluble salts of acidic esters of polybasic acids such as ethylene oxide or propylene oxide adducts of longer-chain alkoxylatable ones Raw materials are used. Wetting agents are, for example, salts of alkylnaphthalenesulfonic acid, the alkali salts of the sulfonated dioctyl succinate and the addition products from alkylene oxides to fatty alcohols, alkylphenols, fatty amines and the like. As a finishing agent, for example Cellulose ethers or esters and alginates into consideration, as well as solutions and dispersions of synthetic polymers, z. B. of polyethylene, polyamides, oxyethylated polyamides, polyvinyl ethers, polyvinyl alcohols, polyacrylic acid or their Esters and amides as well as of corresponding polymethaery! Compounds, Polyvinyl propionate, polyvinyl pyrrolidone, of copolymers, z. B. of those made of vinyl chloride and aerylic acid esters Butadiene and styrene or acrylonitrile or from Ok dichloroethylene, ß-chloroalkyl acrylic acid esters or vinyl ß-ethyl ether and acrylic acid amide or the amides of crotonic acid or Maleic acid or from N-methylol methacrylic acid amide and others polymerizable compounds.

The finishing agents to be used according to the invention tend in the In contrast to the dimethylol and dialkoxymethyl compounds of Urea and thiourea hardly lead to self-crosslinking. They are therefore to be regarded as real reactant crosslinkers. About that In addition, the new finishing agents contain a total of 3 crosslinking groups in the molecule, while the dimethylol and dialkoxyme thy! connections only have 2 crosslinker groups.

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The parts and percentages given in the example are weight units. The parts by weight are related to parts of space as the kilogram is to the liter.

example

A mercerized and bleached cotton fabric with a weight of 125 g / m is comprising on a Poulard with an aqueous solution g per liter 120 Trimethoxymethylharnstoff and 20 g magnesium chloride (hexahydrate), impregnated and squeezed to 75 $> wet pickup. It is then dried on a tenter frame at 120 ^° C. to 7% residual moisture and then exposed to ^{a temperature of 150 ° C. for 5 minutes.}

The fabric has the following technological values (values in brackets = untreated fabric):

Dry wrinkle angle according to DIN 53 890: sum of warp and weft 240 ° (140 °)

Wet crease angle according to Tootal:

Sum of warp and weft 250 ° (170 °)

Monsanto image test after 3 machine washes 4.5 (1.5)

Tear strength 50 χ 200 mm in kg 29.5 (45)

Tear strength after one wash and one-time chlorination 28.7.

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BAD OBiGiNAL

Claims (1)

-9- O.Z. 25th Claim Use of substances of the general formula R ₁ -O-CH5 CH ₂ -OR ₁ J ^ N-CO-N ^ R ₁ -O-CH ₂ H in which the radicals R _{1 are} identical or different alkyl radicals with 1 to 4 carbon atoms or radicals of the formula - (CH ₀ VOR, where R denotes an alkyl radical with 1 to 4 carbon atoms and η is 2 or 3, as finishing agents for textile goods, which contains or consists of natural or regenerated cellulose. Badische Anilin- & Soda-Fabrik AG 909835 / 148b