DE3022429A1 - Reserve dyeing printing of polyester cellulose mixed textile - using alkali and sulphite, bi:sulphite or formaldehyde adduct - Google Patents

Abstract

Reserve dyeing or printing of PES/CEL (polyester/ cellulose) mixed textile with reactive dyestuffs is carried out using alkalis and alkali (bi)sulphites or their HCHO adducts. No discharge agent is needed, so that the available choice of reactive and disperse dyestuffs is much greater than usual.

Description

Process for dyeing PES / CEL mixed textiles

The present invention relates to a reserve pressure method for FES / CEL tissue using alkali sulfites.

Illuminations in large decks were made on PES / CEL mixed media or colorings so far using caustic agents such as sodium or zinc formaldehyde sulfoxylate (Etching reserve pressure). The main disadvantage of this method is the limited selection of suitable etch-resistant dyes and also in the Difficulty producing prints without etched edges, it has now been found that a reserve pressure on PES / CEL is also possible without the use of caustic agents, if As a reservation agent, combine an alkali with sulfites or bisulfites or formaldehyde adducts the same can be used.

The present invention is therefore a method for Dyeing or printing of PES / CEL niche textiles with reactive and disperse dyes, which is characterized in that the reserve is made using alkali lien and alkali sulfites, bisulfites or their formaldehyde addition compounds is carried out.

Mixtures of this type are used for color reserve printing Reactive and disperse dyes, which are insensitive to alkali and sulfites are.

This selection is considerably larger than in the previously practiced etching reserve.

Suitable disperse dyes are the dyes of the nitro, aminoketone, Ketonimine, methine, azomethine, quinoline, coumarine and especially the anthraquinone and azo series. Most of all, the most suitable dyes are those which no substituents in the coupling component under alkaline conditions contain cleavable ester group.

Suitable reactive dyes include azo, anthraquinone, Formazan? Triphendioxazine, nitro and phthalocyanine series. Your fiber-reactive Groups are mainly the mono- and di-halogen 1,2,5-triazine trithlorpyrimidine, Monochlorodifluoropyrimidine, ethylsulfonyl-chloro-methyl-pyrimidine, dichloroquinoxaline groups. A preferred class of reactive dyes are in the color index as drimaras Z and Drimaren P dyes are known for dyeing or cover printing Such reactive and disperse dye mixtures used their fixation prevented by alkali and ne sulfite will.

Disperse dyes suitable for this purpose are above all those which are cleavable under the conditions to be used according to the invention, e.g. dispersions dyes containing cleavable carboxylic acid ester and / or sulfonic acid ester groups contain.

These disperse dyes can also be of the most varied class belong, e.g. to the class of Anthraquinone ^, Elono = and Disazole-, Nitrov, Quinine phthaline, methine and azomethine dyes Suitable reactive dyes are here especially those containing vinyl sulfone or sulfoethyl sulfone groups. These Reactive dyes also include the anthraquinone, mono- and disazoo, nitro- ^, Formazan, triphendioxazine and phthalocyanine series.

The alkalis to be used according to the invention are preferably soda or caustic soda, which in amounts of 1-10%, preferably about 2-8% (based on printing paste) can be used (soda is preferred). The sulfites (preferably navsulfite or bisulfite, or their formaldehyde adducts) are also in amounts of 1-10%, preferably 2-5% (related to printing paste) available. In addition to the aforementioned agents, there are also oxidation / reduction stabilizers (org. nitro compounds) preferred further agents in the printing pastes. The thickening depends on the type of fabric and the printing process on pre-dyed fabrics it is advantageous to proceed in such a way that the dye liquor that contains the last two above-mentioned disperse and reactive dye types, is padded and after a pre-drying (without fixation) then the color reserve print with the preparations of the first two types of dye and the reservation agents is carried out.

In pure printing processes (in which both) dye groups in separate Approaches are applied to the textile material) the color reserve printing takes place (with the first two types of dye mentioned) and with reservation agent first, and only then did the Decker print with the last two types of dye.

The fixation is carried out according to the usual procedures in the usual way and way.

In the following examples, parts are parts by weight or parts by volume; % are% by weight, temperatures are given in ° C.

Example 1 A PES / Co 67/33 blended fabric is mixed with a solution consisting of 30 g / l C.I. Reactive Blue 19 40 g / L C.I. Disp. Blue 284 50 g / l migration inhibitor (8% guar solution) 3 g / l mono-Na-phosphate padded and dried below 100 ° C.

The fabric prepared in this way is coated with a printing paste consisting of 500 parts solution of a guar thickening (8% aqueous solution) 30 parts anhydrous sodium sulfite 50 parts of calcined soda 100 parts of polyethylene glycol 300 100 parts of glycerol 10 parts Sodium nitrobenzenesulfonate 30 parts C.I. Disp. yellow 54 40 parts C.I. React. yellow 19 140 parts water 1000 parts printed and dried.

To fix the dyes, the top prints are first used during 7 ltin.

steamed in superheated steam at 1700 and then in a bath, Consists of 150 g / l calcined soda 100 g / l solid table salt 50 g / l potash solid 70 ml / l sodium hydroxide solution 360Be1 treated for 10 seconds at 950C.

This is followed by rinsing in cold water and soapy when increasing Temperature from 40 to 950C in the presence of a dye-affine detergent and 2 g / l caustic soda solid. It is then rinsed, neutralized with acetic acid, rinsed and dried.

Example 2 A PES / CV 50 / So mixed fabric is printed (1) with a Printing paste consisting of 500 parts of a solution of a guar thickener (8% aq.) 30 parts Na sulfite anhydrous 50 parts of calcined soda 100 parts of polyethylene glycol 300 100 Parts glycerin 10 parts sodium nitrobenzenesulfonate 50 parts C.I. Disp.red 121 20 parts of C.I. React.red 187 140 parts water 1000 parts (2) then overprinted with a printing paste consisting of (4% aq.) 600 parts solution of an alginate thickener (4, aq,) 3 parts mono-Na-phosphate solid 50 parts C.I. Disp.blue 285 40 parts C.I. React.blue 122 307 parts water 1000 parts and then dried.

The fixation and further completion takes place according to the information of example 1.

Claims (2)

Process for dyeing PES / CEL mixed textiles Patent claims X Process for dyeing or printing PES / CEL mixed textiles with reactive dyes, characterized in that the reserve is made using alkalis and alkali sulfites, bisulfites or their formaldehyde addition compounds is carried out. 2. Textiles, dyed using the agents according to claim 1.