CS238916B1 - Method of refining of textile materials containing cellulose fibre - Google Patents

Abstract

Processing of textile materials containing cellulose fibers before dyeing concurrently with staining or after anionic staining dyeing with a water bath of value pH = 11-14, containing 1 to 200 g.l. compounds of the formula wherein Y is CH- - CH - CH - "V or CH ~ - CH - CH- - | 2 I 2 n is an integer of 1, 2 or 3 X is an inorganic inorganic radical or organic acids, improves coloring cellulose fibers and at the same time crosslinks cellulose to improve performance cellulosic fabrics.

Description

The invention relates to a process for the refining of textile materials containing cellulose fibers, which is carried out before, at the same time as or after dyeing with anionic dyes, preferably substantive or reactive dyes.

Dyeing of cellulosic textile materials with anionic dyes, mediated by compounds having at least one group capable of reacting with the hydroxyl groups of cellulose and a quaternary ammonium group capable of binding ionic organic dyes, has been known for many years and has recently seen the development of new compounds with two reactive and two quaternary ammonium groups considerably expanded.

All of these compounds covalently bind to cellulose in an alkaline environment and, through a quaternary ammonium group, improve the dyeability of the cellulosic materials with anionic dyes, which results in an increased uptake of these dyes as well as an improvement in the resistance of such dyes, i.e., stability.

Generally, reactive quaternary ammonium compounds can be used prior to dyeing, simultaneously with the dye, but also to enhance the dye stability.

A number of such compounds have already been described in the literature and in the patents. So far, most have been reported on two compounds, N, N, N-trimethyl-N-glycidylammonium chloride and N, N, N-trimethyl-N-propylene chlorohydrinammonium chloride.

However, these substances did not find wider application due to some negative properties. Of greater importance are compounds having two glycidyl or porpylenohlorohydrin groups in the molecule which are not only capable of binding to cellulose but even causing crosslinking.

The aforementioned problems are solved by a method of refining textile materials containing cellulosic fibers which is carried out before, simultaneously with or after dyeing with anionic dyes, preferably substantive or reactive dyes.

The method is characterized in that the textile material is treated with an aqueous bath in an alkaline medium at a pH of - 11 to 14, comprising from 1 to 200 gl ^-1 compound of formula ^{1: H} 2 - ^C ¹H © "

Y - Ν'- CH- - CH - J> N - Y = X \ ^{2 n} CH - CH ₂ where Y is a group CH ₂ - <

CH - CH.

or

CH ₂ -CH-CH ₂ Cl OH n is an integer of 1, 2 or 3

X is an anionic residue of an inorganic or organic acid.

The optimum effect of the process according to the invention is achieved when the textile material is treated in an alkaline environment with sodium hydroxide.

The compounds of formula (1) may be applied to the cellulose fibers prior to the dyeing, simultaneously with the dye or after dyeing. The effect of these substances increases the ability of the cellulose to absorb anionic dyes if the cellulose fibers are exposed to the compounds of formula 1 prior to dyeing.

For example, the use of reactive dyes is thereby increased by an average of 30 to 50 S, moreover, the modified cellulose fibers can be dyed with reactive dyes without the usual addition of salt and alkaline.

The use of the compounds of the formula I together with anionic dyes also increases their use, shortens the fixation time and increases the color fastness. The application of these substances after dyeing increases color fastness, which is most noticeable with substantive dyeing.

In all these cases, however, the reaction of the compounds of formula (1) also results in crosslinking of the cellulosic fibers, thereby improving the non-flammable properties and dimensional stabilization of the fabrics.

Thus, an effect comparable to the crosslinking effect of the resin formulations is achieved. The advantage of the process according to the invention, however, is that the loss of strength is, in contrast to the resin treatment, negligible.

Of great importance is also the possibility to achieve a finish in one bath at the same time as dyeing, which results in time and energy savings and at the same time a high dye utilization is achieved.

The advantages of the process of the invention are described in the following examples.

He did

Cotton yarn in reels on bobbins is after processing and bleaching processed on bath dyeing machine:

compound 1 of Table 1 20 gl sodium hydroxide 8 gl ¹

Bath ratio 1: 6, temperature 55 ° C, time 50 minutes.

This is followed by washing with water at a temperature of 40 ° C to pH 7 and dyeing in a bath containing

Reactive Blue No. C.I.5 2%

The bath ratio is 1: 6, initial temperature 30 ° C. The temperature is raised to boiling for 40 minutes, boiling for 15 minutes. At the end of the dyeing, the dyeing bath is completely clear. The dye was completely stretched onto the cellulose fibers without dosing the salt and foxivalo with no alkali.

Further conventional soap treatment is not required. It is sufficient to wash the material with water simultaneously with cooling. The resulting deterioration has twice the saturation compared to that achieved on the same material by conventional dyeing technology with the same amount of the same dye.

Example 2

Cotton pre-treated mercerized shirts are soaked in the bath by:

Compound No. 2 of Table 1 Straight Orange No. C.I. Sodium hydroxide

50 g.i ' ¹ 15 Dec gi ¹ -1 50 g-i -1 20 May g.i

Leave the bath temperature with a stable fabric.

° C, 70% rinse. After passing through the follicle, the fabric is wound up and the wrap is rotated for 12 hours. Washing into a neutral reaction follows

The rich orange coloration has a durability comparable to that of the reactive dye. At the same time, the fabric exhibits a very good ironiness characterized by a wet recovery angle

Example 3 (knitted fabric pre-treated and dyed using conventional dye hydrodynamic dye machine)

Straight Blue 8. CX 106 2% is treated for 15 minutes in a bath containing Compound No. 3 of Table 1 5 gl ¹ in a 1: 10 bath ratio.

The bath temperature is raised from an initial 30 ° C to 50 ° C during this time. Add to the bath:

sodium hydroxide 2 gl ^{3 4} '.

and the fabric is processed at 50-60 ° C for an additional 30 minutes. This is followed by washing to a neutral reaction of the dyed material. The coloring shows stability in water 4-5 / 4-5 / 4-5 and in washing at 60 ° C 4 / 4-5 / 4-5.

Table

Examples of compounds of the invention

and.

CH. il ² / / ^CH 2 CH - ch ₂ - N - ch ₂ OH '^ CH-

QH ₂ ^N ° 4 ^CH 2. N - CH ₂ - CH - CH 1 ch; OH 1 Cl

2.

@X ^CH 2 ^C S2 © 2 CH ₃ C00 CH. · 1 ² Cl - CH - CH. 1 2 OH - N - CH. · ^ ^CH 2 ' ^{N - CH} 2 - ^CH 2 - CH t OH - CH. Cl

3.

C - CH

CH.

CH

CH

CH

Cl

CH. - CH - CH. ² '-o ^{7 2}

CH. ^so d - 2 © 4 CHjjji N - CH. - CH - CH. 2 i 2 ch ₂ OH Cl

4.

Claims (2)

SUBJECT OF THE INVENTION Method for the treatment of textile materials containing cellulosic fibers before, simultaneously with or after dyeing with anionic dyes, preferably substantive or reactive dyes, characterized in that the textile material is treated with a water bath having a pH of 11 to 14 containing 1 to 200 g / compound of formula 1 1 ^'-CH 2 - ^c ₂ -e © CH ₂ -CH OH where Y is CH ₂ -CH 2 O CH, or CH - CH - CH ² I ² Cl OH n is an integer of 1, 2 or 3 X is an anionic residue of an inorganic or organic acid. 2. A method according to claim 1, wherein the textile material is treated in an alkaline medium formed by sodium hydroxide.