US2018436A

US2018436A - Printing of animal fibers with mordant dyestuffs

Info

Publication number: US2018436A
Application number: US670032A
Authority: US
Inventors: Brandt Philippe
Original assignee: Firm Durand & Huguenin S A
Current assignee: Firm Durand & Huguenin S A
Priority date: 1932-05-12
Filing date: 1933-05-08
Publication date: 1935-10-22
Anticipated expiration: 1952-10-22

Description

' ing operation quite' apart from a short steaming operation,

animal fibers are I a sufficient quantity of in free state desired result can these results can Patented a. 2'2, 1935 PRINTING or MORDAN'I' Philippe Brandt, flrmDuran 82 land.

I No Drawing.

claims.

Acid mordant dyestufls with chromium mordants can, up to the present, when used for printing wool, only be suinciently fixed by' a steamof long duration, namely 0! one hour and even longer. For certain articles, however, along steaming operation is a disadvantage, the consumption of time and of steam, in that in overprinting on light ground shades, ior'example, the ground shade easily becomes yellow.

It has now been found that it is ssibleto fix acid mordant dyestuffs on wool co pletely by such as steaming for 8 minutes in a Mather-Flatt apparatus. For this purpose it has been found necessary to use in the printing paste an increased or substantial proportion of a non-volatile organic acid, such as oxalic acid, tartaric acid, citric-acid, adipic acidand the like, whereby the acid conditions which promote the fixation or the 'dyestufl on given throughout the whole steaming operation. The simplest way is to add such an acid to the printing. paste. Printing pastes containing such acid are often insufliciently stable. The also be attained by producing the, said acid in the printing pastes themselves by dissociation of salts thereof, for instance of ammonium salts of suchacidsor corresponding chromium salts like chromium oxalate, chromium tartrate, chromium citrate, during the steaming operation. The various ways of working may also be combined. Thus, for example, the addition 0! free acid to a printing paste containing already an ammonium salt or a chromium salt of such an acid, or both, is suitable for the pur- D se.:oi the present invention.

Besideshaving the advantage that the duration of the steaming process oflers it shortens operation, the new other advantages in so far as the -prints obtained are much fuller and-have an improved iastness to rubbing. In most cases simultaneous use of urea or in: Past The new process cannot only beapplied to wool, but also to silk, in general to animal fibers. It gives good results not only in proper printing, but. also in the production 0! padded dyeings thio-urea in the print- .on the aforesaid fibers. r

In hitherto known printing prescriptions, the I use of oxalate of ammonia for examplehas already been indicated. This body, however,- was evidently used in quantities insufllcient tor the Application my German! when an increased quantity of oxalate of am- 1 monia-for instance at least 4 per cent or the simple manner a problem set to the further be enhanced by the Annual. mans wrrn nrrs'rur'rs Mulhouse, d Huguenin France, auignor to S. A Band, Switzeh a, rose, Serial No. May 12. 1932 (C1; 8- purpose of the present invention, since for a complete fixation of the dyestuffs a steaming op-' eration of 1-2 hours was alwaysnecessary. Contrarily to this, according to the present process,

, said salt for 3 per cent dyestuiI--is added to the printing paste, already by a short steaming-8 1 minutes-a complete fixation is attained. In this 'ago has been solved. The same result is obtained, when the other cited non-volatile organic acids, respectively their dissociable salts, like ammonium salts, chromium salts are used. 5 The improved process is illustrated by the 101- lowing examples: g

Example 1 Parts Dyestufl according to Example 1 of U. S. Patent No. 1,895,545 (sulphonated anilido compound of the. galloqgoanine dyestufl firom' nitrosodiethyl-metaluidine and gallic acid) Urea 60 Hot water 190 Tragacanth thi"kening 550 Ammonium oxalate (solid) 50 these ingred ents being mixed, heated up for dissolution and then cooled down, there A. upon there is added 1 Chromium acetate solution (20 B.). 90 9 Example 2 5 Chromocltronlne R (see Color Index No.

441)- Urea a 90 Hot water 170 40 Tragacanth thiclrening 600 Ammonium oxalate (solid) are heated up for dissolution and cooled down, whereupon there is added Chromium acetate solution (20 B.) 90 45 1000 Example 3 1 v cl trgnorhcdine BR (see Color Index No.

Urea

Water 1'10 'n-agacanth' thickening 600 practice long 10 Ammonium oxalate (solidY are heated up to dissolve and cool whereupon there is added Chromium acetatesolution (20 B.) 90

Example 4 Parts Chromocitronine R (see Color Index N '30 Water 260 'I'ragacanth thickening 570 Ammonium tartrate (solid) 50 are heated up to dissolve and cooled down, whereupon there is added Chromium acetate solution (20 B.) 90

1000 Example 5 I. 'Parts Chromocitronine R (see Color Index No.

I so Urea 60 Water 220 Tragacanth thickening 600 onium oxalate (solid) 50 Chromium tartrate (solid) 40 The thus prepared printing colours are printed dried, steamed for 8 minutes, washed blue, yellow or rose prints fast to rubbing are obtained. In a similar way prints on natural silk are produced.

What I claim is:--

1. A process for producing prints or dyeings about '8 2. A process for producing prints or dyeings on animal fibers with acid mordant dyestufis by steaming, said prints or dyeings being steaming, said prints or dyeings being fast to rubbing and of deep intensity, which consists in adding to the printing paste or besides the usual ingredients, at least 4- per cent prepared printing paste or padding solution and fixing the dyestuii on the fiber by a steaming for about 8 minutes.

cent of dyestuif, when heated,

condition is maintained throughout steaming, 25

producing prints or dyeings 4. A process for producing prints or dyeings on animal fibers with acid mordant dyestuffs by steaming, said prints or dyeings being fast to rubbing and of deep intensity, which consists in adding to the printing paste or padding solution, besides the usual ingredients, a dissociable salt of a non-volatile organic acid, in a quantity, capable of yielding at least 4 per cent'of acid for 3 per cent of dyestufi, when heated, so that the Pacid condition is-maintained throughout steaming, in combination with an urea compound. printing or padding the fabric with the thus prepared printing paste or padding solution and fixing the dyestuff on the fiber by a -steaming for about 8 minutes.

mal fibers with acid mordant dyestuifs by steaming, said prints or dyeings being fast to rubbing and of deep intensity, which consists in adding to the printing paste or padding solution, be- 2 sides the usual ingredients, an ammonium salt of a non-volatile organic acid in a quantity capable of yielding at least 4 per cent of acid for 3 per so that the acid printing or padding the fabric with the thus prepared printing paste or padding solution and fixing the dyestufi on the fiber by a steaming for about 8 minutes.

' 6. A process for producing prints or dyeings on 0 animal fibers with acid mordant dyestuffs by steaming, said prints or dyeings being fast to rubbing and of deep' intensity, which consists in adding to the printing paste or padding solution,

besides the usual ingredients, ammonium oxalate 35 in a quantity capable of yielding at least 4 per cent of acid for 3 per cent of dyestufi, when heated, so that the acid condition is maintained through- 1 out steaming, printing or padding the fabric with the thus prepared printing paste or padding solu- 40 tion and fixing the dyestuff steaming for about 8 minutes.

7. A process for producing prints or dyeings on animal fibers with acid mordant dyestufi's by on the fiber by a steaming, said prints or dyeings being fast to rub- 45 bing and of deep intensity, which consists in adding to the printing paste or padding solution, be-

- "sides the usual ingredients, a chromium salt of a tion is maintained throughout steaming, printing or padding the fabric with, the thus prepared printing paste or padding solution and fixing the dyestufl. on the fiber minutes.

8. A process for producing prints or-dyeings on animal fibers with acid mordant dyestuffs by the thusprepared printing paste or padding solu-- tion and fixing the dyestufl on the fiber by a steaming for about 8 minutes.

9. A process for producing prints or dyeings on 16 5. A process for producing prints or dyeings on by a steaming for about 8 55 cent of dyestufl, when heated, so that the acid condition is maintained throughout steaming, in combination with an urea compound, printing or padding the fabric with the thus prepared printing paste or padding solution and fixing the dyestufl on the fiber by a steaming for about 8 minutes.

10. A process for producing prints or dyeings on animal fibers with acid mordant dyestufls by steaming, said prints or dyeings being iast to rub-,

of a non-volatile organic acid in a quantity capabie oi yielding at least 4 per cent of acid for 3 per bins and of deep intensity, which consists in adding to the printing paste or padding solution, be-

sides the usual ingredients, ammonium oxalate in a quantity capable oi yielding at least 4 per cent oi acid for 3 per cent 01 dyestufl, when heated, so that the acid condition is maintained throughout steaming, in combination with urea, printing or padding the fabric with the thus prepared printing paste or padding solution and fixing the dyestufl on the fiber by a steaming for about 8 10 minutes.

FHIIJPPE BRANDT.