US1979121A - Method for treating textile goods of any description - Google Patents

Description

Patented a.- 30, i934 MEI-non FOR TREATING TEXTILE GOODS OF ANY DESCRIPTION 1 Walter Betta, Zwichn, Germany No Drawing. Appllczltlilon Serial No. 390,501. 1932 I 3 Claims.

The British specification No. 251,993 has disclosed how solutions containing urea can result in dressing efiects on fibrous matter. It is described there that by the treatment done with urea a 5 smooth and moist feel may be imparted to the fibrous matter, that the dressing so produced is heat-resisting in a satisfactory degree and that the infiammability of the fibrous matter so treated is reduced. Moreover the British specification No. 285,942 shows that acetate silk may be rendered more absorptive for dyes by being treated with urea as a swelling means. From ancient times it is also known to use urea (urine) as a means for promoting the felting process of cloth and felt of any description.

It has been found that the molecular compounds of urea, its derivatives and products of substitution permit of securing particular dressing effects on. account of their favorable properties. These molecular compounds are characterized by the general formula I A in which M is a monovalent, divalent, trivalent or quadrivalent metal, e. g. sodium, magnesium, al-

uminium, zinc or cadmium, and X any anion. Some of these compounds may be mentioned here. So the Journal fiir'praktische Chemie 1.35, 58 refers to the compound [Mg(CON2H4) 4] (N03) 2,

the Chemisches Zentralblatt 1906, II, 1841 describes the compounds [Mg (CON2H4) 6131's and Mg 00 Bra,

OOIHG the Ann-a-len der Chemie 101, 339 describe the compound [zmcommmcu September 21, 1933, Germany September 23,

the said molecular compounds distinguish themselves sensibly from the urea so that the use thereof in dressing and other treatments of fabrics is not only a novel process but also a substantial advantage.

In contrast to the British specification 285,942

the said compounds are used for an after-treatment and always after dyeing. The application may be done in the rinsing bath directly after the dyeing process or on a gumming or impregnating machine or on a reel or washing machine. It is also possible to pulverize thedressing solutions in order to be sprayed on the fabric, even for increasing weight only.

On account of the neutral reaction the combination with dressing means of any description is almost unlimited so that there is the possibility of producing socalled combination effects to a very wide extent which eifects are often required for textile goods.

Example No. 1.A viscose charmeuse is treated on the reel with a bath containing 5 kilos of carbamide-cadmium-chloride in 100 litres, and

- thereupon centrifuged and dried.

Example No. 2.-A pure-woollen gentlemans cloth is passed on the padding machine through a bath containing 3 kilos of flake leather glue and 12 kilos of carbamide-sodium-chloride in 100 litres of water, thereupon squeezed, dried and hot-pressed.

Example No. 3.0n the reverse side of a coloured cotton fabric is sprayed a dressing solution containing 10 kilos of soluble starch and 15 kilos of carbamide-zinc-chloride in 100-litres of the liquid, thereupon dried and calendered.

The method is applicable to treating textile goods of any description made of silk, cotton, artificial silk or mixtures thereof.

I claim 1. A method for treating textile goods of any description made of wool, cotton, artificial silk, or mixtures thereof, which comprises dyeing the goods and then treating the same water-soluble hygroscopic molecular compound of a carbamide.

with a neutral 1 2. A method for treating textile goo of description made of wool, cotton, artificial silk, or mixtures thereof, which includes the step of treating the same with a water-soluble hygroscopic molecular compound of o. substance oi the group consisting of carbsmide and its substitution products and derivatives.

3. A method for treating tee ewes ofy mveisi