CS221089B1 - Method of dying and printing the textile fibrous material containig cellulose fibres - Google Patents

Description

The present invention relates to dyeing textile materials containing cellulose fibers with anionic dyes using compounds of the general formula

CHr

-CH

IN

-CH-CH ₂ II ² OH Cl or

-CH-CH.

II ²

OH-O-CO-CH3

X is an anion of a strong inorganic or organic acid, n is an integer of 1, 2 or 3.

The compounds according to the invention are among the so-called cationic preparations whose use in dyeing cellulosic textile materials has become one of the important elements of rationalization in the textile industry. Cationic formulations increase the use of anionic dyes, improve their stability and reduce the amount of water required for washing after dyeing.

The cationic preparations contain in their molecule a suitable reactive group capable of binding to the hydroxyl groups of cellulose and a suitable cationic group which can bind ionic anionic dyes.

With regard to the availability and cost of the preparations, 2,3-epoxypropyl- or 3-chloro-2-hydroxypropyl is most often chosen as reactive. Typically, the quaternary ammonium group carries a positive charge.

Recently, some preparations have been protected, characterized by a doubling of both the reactive and cationic groups. One of the hitherto unknown possibilities is the di-functional compounds according to the invention.

Difunctional compounds offer the same advantages as monofunctional formulations when applied. In addition, they cause cellulose crosslinking and thereby improve recovery angles. They are also capable of covalently binding dyes with suitable groups to cellulose.

Moreover, the difunctional compounds of the invention improve the dyeability of the cellulosic substrate by disperse dyes. This circumstance can be advantageously used in dyeing and printing mixtures of cellulosic and synthetic fibers. This circumstance is particularly preferred in the sublimation printing of these blended blouses.

The compounds of the invention react with cellulose fibers in an alkaline environment similar to the prior art cellulose cation formulations.

Sodium hydroxide or sodium carbonate is most suitable as alkali. The reaction itself may take place in a long bath on conventional refining devices, such as a dyeing jug, a rope hydrodynamic dyeing machine or a dyeing apparatus with bath circulation.

From an economic point of view, it is preferable to apply the impregnation of the alkaline solutions on the filament, and the reaction itself takes place for 8 to 12 hours at room temperature in the packed room.

In the impergination processes, the reaction can be accelerated by allowing the aging to occur at elevated temperature in a thermal chamber or after drying by heat treatment in the temperature range of 100 to 220 ° C. The actual cationization is preferably carried out after pre-treatment prior to the actual dyeing. Here the use of dyes in the subsequent dyeing is highest.

However, the selected dyes can be applied simultaneously with the cationic formulation. The compositions according to the invention can also be used to additionally increase the stability of dyeing with anionic dyes, preferably dyeing with substantive dyes.

Another advantage of the process is that a non-iron treatment is achieved at the same time as the dyeing, while the loss of strength is very small compared to conventional non-iron treatment methods.

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

After conventional pre-treatment, including merceration, the cotton shirt is impregnated onto the fularda by a working bath containing

gl ^-1- (2,3-epoxypropyl) -3- (3-chloro-2-hydroxypropyl) benzimidazolinium chloride,

g. 1 - ¹ sodium hydroxide,

Detergent 80%, temperature 20 ° C.

The fabric is wrapped after passing the fulard and allowed to rest at room temperature for 8 to 12 hours.

After washing and neutralizing, the fabric is stained on a Reactive Blue No. 1 I dye. 1.5%.

The first two passages are stained at 40 ° C, the other two passages at 60 ° C and the next 4 passages are painted at 85 ° C. Water wash at 80 ° C followed by one passage, another passage at 50 ° C and the last passage with cold water washing. The resulting blue coloration has excellent wet fastness and corresponds to the saturation of conventional coloration achieved by 4% of the same dye. The fabric has very good wet recovery angles.

Example 2

A scarf made of a mixture of 67% cotton and 33% viscose staple is impregnated on the fularda with a bath containing

gl ^-1,3 -di- (3-chloro-2-hydroxypropyl) benzimidazolinium sulfate.

This is followed by drying on hotflui at 100 to 120 ° C. The web is printed on a flat film printing machine with a printing paste containing

600 g. kg ^-1 sodium alginate 4%, g. kg ^-1 sodium hydroxide, g. kg ^-1 straight orange No. CI 39,

100 g. kg ^-1 urea.

After drying on a mansard, printing is steamed on a continuous steamer with saturated steam at 102 ° C for 12 minutes. The usual washing and drying follows. The resulting prints have excellent wash stability at 95 ° C.

Example 3 i

The fabric of a mixture of 67% polyester staple and 33% cotton is impregnated on the fulare of Example 1.

After mating, washing, neutralizing and drying, the fabric is soaked in a bath:

g. 1 ^_1 disperse blue no. 73 Cl,

g. 1 ^_1 Reactive Blue no. CI 5

gl ^{-1 of} sodium alginate, impregnation temperature 20-30 ° C, 70% rinse.

After drying on hotflu at 120 ^° C, the fabric is hot-air fixed at 210 ° C for 50 seconds. The resulting dyeing uniformly covers both portions of the blends and exhibits very good wet fastnesses.

Instead of the compound of Example 1, the same amounts of compounds can be used with the same result:

1- (3-ethanoyloxy-2-hydroxypropyl) -3- (3-chloro-2-hydroxypropyl) benzimidazolinium acetate,

1,3-di- (2,3-epoxypropyl) benzimidazolinium chloride.

Example 4

Cotton fabric pre-treated and colored221089 a

After the usual washing at the end of the dyeing, it is treated for 40 minutes in a bath containing

gl ^-1 l, 3-di- (3-chloro-2-hydroxypropyljbenzimidazoliniumchloridu g. 1 ^_1 sodium hydroxide bath at a length of 1: 4 followed by washing with water at 30 ° C until neutral. The dyeing possesses very good wash-fastness.

Example 5

Mercerized cotton fabric, pre-treated according to the usual technological procedure, is soaked on the fulare

g. i “ ¹ Reactive Orange No. CI 12,

g. ¹ urea, g. I ^-1 sodium hydroxide, g. ^11-1,3 -di- (3-chloro-2-hydroxypropyl) benzimidazolinium acetate.

Bath temperature 20 ^Q C odmačk 80%.

After passing through the fulard, the fabric is allowed to rest in a wrap for 10 hours. This is followed by washing by passing through a wide machine under the conditions customary for washing reactive dyes. In the resulting dyeing, the dye utilization is increased by 35% over conventional dyeing while increasing the recovery angles from 75 ° to 125 °.

Claims (1)

Method for dyeing and printing textile fibrous materials containing cellulose fibers, characterized in that the textile fibrous materials are treated with a water bath containing, before or simultaneously with the dye, or after dyeing