DE575022C - Process for the production of softeners for textile goods - Google Patents

Description

Process for the production of softening agents for textile goods It has been found that valuable plasticizers for textile fibers, in particular those made of artificial silk, consisting of colloidal solutions of polar (hydrophilic) Group-containing substances in hydrotropic bodies are obtained when one gets its amide a saturated higher fatty acid or an N-substitution product thereof a hydroxyl-containing derivative: a higher paraffin hydrocarbon or with oleic acid amide or an N-substitution product thereof mixes and the mixture a sulphonation process under such mild conditions: underwiYft that the amide or N-substituted amide of the saturated fatty acid remains unsulfonated while in. the hydroxyl-containing bodies known to be easier to sulfonate or in the oleic acid amide a sulfur: outer residue enters. As such hydroxyl-containing bodies be the wax alcohols or their technical mixtures as well as conversion products called, obtained by the action of aqueous alkalis on haloparaffins will.

The goal of partial sulfonation is achieved by either: one for the complete sulfonation of both components as the starting material Serving: Mixtures insufficient amount of the sulfonating agent used or else lets the sulfonation process go on at so low temperatures that too in the presence of sufficient amounts of the sulfonating agent, sulfonation of the saturated fatty acid amide is omitted.

The particular technical advantage of the present process is there in the fact that a completely colloidal solution - a water-insoluble one - can be obtained in one operation unsulfonated fatty substance in a sulfonation product of the above Kind receives.

Compared to the products described in British patent specification 328 675, which sulfonated by mixing fatty acid amides with previously completely sulfonated. Substances of various kinds are obtained, the present products show due to the fact that a completely colloidal solution of the components is present; a particularly high degree of mixing. As a result, with the help of the present products, textile fibers of vegetable origin, especially those made from rayon, are softened. effect achieved as: it cannot be achieved with the products of the said British patent specification and also with the sulfonation products of fatty acid amides alone, which are obtained according to British patent 318 542. Example i 80 parts of oleic acid amide are mixed with 20 parts of stearic acid amide and about zoo parts of trichlorethylene. 100 parts of sulfuric acid monohydrate are allowed to run into this mixture with cooling at from 0 to + 5 °. After the sulfonation has ended, the reaction mass is poured onto ice, separated from the aqueous layer which separates out above and the lower layer, which contains the reaction product, is neutralized with sodium hydroxide solution. After the solvent has been distilled off, the product is obtained as a homogeneous water-soluble paste. Example 2 75 parts of oleic acid ethyl anilide are stirred with 25 parts of stearic acid amide and about zoo parts of carbon tetrachloride and cooled to + 5 °. 95% strength sulfuric acid is allowed to run into this mixture at from 0 to + 5 °. After the sulfuric acid has been added, the sulfonation is poured onto ice and worked up as described in Example i. EXAMPLE 3 75 parts of oleic acid diethylamide are dissolved with 25 parts of phenitic acid diethylamide in zoo parts of trichlorethylene and this solution is sulfonated at 0 to + 10 ° with 100 parts of monohydrate. The sulphonation is worked up as described in Example i.

Example 4 40 parts of lauryl alcohol and 10 parts of palmitic acid amide stirred with 150 parts of trichlorethylene or with ether. The mixture is taking Cooling with 50 parts of monohydrate sulfonated. After the acid has run in, the The sulfonation mass is poured onto ice and converted into the sodium salt in the usual way and freed from solvents. If you use the corresponding one instead of lauryl alcohol Amount of product obtained by the action of caustic soda on trichloride hard paraffin obtained, a mixture of similarly good properties is obtained. example 54 parts of stearyl alcohol are mixed with 12 parts of falmitic acid amide at about 60 ° melted together and stirred. At 50 °, 20 parts of monohydrate are added to this mixture dripped in. After all the sulfuric acid has run in, it will be stirred after a short period of time neutralized in the usual way.

The colloidal solutions prepared in this way are used in amounts of o, 2-bis 2 g per liter and give artificial silk in particular a supple feel and robust grip, as it is generally desired for these articles. You can Can also be used in the dyebath, as the handle is retained despite subsequent winding remain.

Claims (1)

PATLNTANSL'RUCTi: Process for the production of plasticizers for textile fibers, consisting of an amide of a saturated higher fatty acid or an N - substitution product of the same with a hydroxylated derivative of a higher molecular weight paraffin hydrocarbon or with oleic acid amide or an N-substitution product the same mixes and the mixture undergoes a sulfonation process under such mild Subject to conditions that either using one for full Sulphonation of the starting mixture Insufficient amount of the sulphonating agent or by holding such low temperatures during the sulfonation process. the amide or N-substituted amide of the saturated fatty acid remains urisulfonated.