CS220048B1 - Transmitter for surface dying the polyester fibres - Google Patents

Abstract

Carrier for surface dyeing of textiles open or pressure dyeing apparatus at a temperature of 95 to 135 ° C contains 50 > up to 90 ° / o m-dichlorobenzene concentrate, 9 to 40% of ethoxylated alkylphenols, 1 to 40% by weight of dialkyl phthalate and optionally <perfume. This is how polyester is dyed fibers and mixtures thereof.

Description

The present invention relates to a carrier for surface dyeing of polyester fibers and / or mixtures thereof with other fibers at a temperature of 95-135 ° C in open or pressure dyeing apparatuses.

Transmitters are used to dye polyester fibers because the low sorption properties of the polyester fibers do not allow sufficient dyeing of the fibers at normal dyeing temperatures of 95-135 ° C. Transmitters are also used at higher dyeing temperatures to improve the level of dyeing and to achieve rich shades with lower doses of dyes. Carriers are chemical compounds that facilitate dye penetration into fibers and their use is particularly preferred for blends of polyester fibers with natural fibers such as wool or cotton. Especially when dyeing wool-polyester mixtures, which are commonly used for a wide variety of garments, it is desirable to dye at a lower temperature in order to avoid damage to the wool fiber and hence the use of a carrier.

Dyeing at this temperature is performed in both open and pressure dyeing apparatuses and polyester fibers are dyed with disperse dyes.

Many types of transmitters are known. These include, for example, phenoxy substituted mono- and dicarboxylic acids, formaminopropionitriles, polyvinylpyrrolidones, tribromophenoxyethanols and others. The disadvantage is the relatively complicated production of these types of carriers.

Other carriers are diphenylalkyls, alkylbenzenesulfonates, polyalkylnaphthalenes, decalin, chloroparaffins, formylaminopropionitriles and others. Their disadvantage is worse biodegradability.

The third group consists of decalin, chloroparaffins, trichlorethylene, perchlorethylene and others. A serious disadvantage of these types of carriers is their toxicity.

In addition, diphenylalkyl and phosphoric acid derivatives can be used. Their common feature and disadvantage is the difficult availability of starting materials.

The object of the invention is to overcome the above-mentioned disadvantages and, moreover, to manufacture the carrier from available and economically advantageous raw materials.

Disadvantages of the prior art carriers are eliminated with the carrier for surface dyeing of polyester fibers and / or mixtures thereof with other fibers at a temperature of 95-135 ° C in open or pressure dyeing apparatuses, the essence of the invention being that it contains 50-90% m-dichlorobenzene a concentrate comprising 30-60% o-dichlorobenzene, 30-60% m-dichlorobenzene and 0-20% p-dichlorobenzene, furthermore 9-40% ethoxylated alkylphenol of the formula

Wherein R 1 is alkyl of from 8 to 12 C, n is 4 to 20, Ph is phenyl, 1 to 40% diethyl phthalate, optionally up to 2.5% industrial perfume.

An advantage of the present invention is its ease of manufacture. It belongs to the group of relatively easily biodegradable substances and therefore does not have a negative impact on the environment. It is particularly preferred that the major component of the polyester dye surface transfer agent of the present invention is dichlorobenzene concentrate, which is a waste product in the production of monochlorobenzene.

By using the transmitter according to the invention, foreign exchange savings are achieved, as the transmitters imported from the capitalist states are still used for this purpose.

Example 1

Carrier composition:

% m-dichlorobenzene concentrate of 17% ethoxylated alkylphenol of formula

Rjj-Ph-O-fCH3 -CH2O -ίρ, Η where R 1 = alkyl with 12 C, n = 4 to 20 with the highest frequency of occurrence n = 10, Ph - phenyl% diethyl phthalate

Intended for dyeing 45/55 wool / polyester fabrics in jet dyeing machines and ower-flow dyeing machines.

Dye bath composition:

x% disperse dye - according to the desired shade, y% dye for wool according to the desired shade g / 1 ammonium sulfate

0.1 ml / l of acetic acid to pH = 5.5 1 to 2 g / l Corticol NNO, which is the sodium salt of dinaphthylmethanesulfoacid up to 5 g / l of the transporter according to the invention - according to the required coloring density

The material is treated for 5 minutes in a bath containing ammonium sulfate, acetic acid and cortamol NGO at 50 ° C. The determined amount of transfer agent - depending on the desired color saturation - is emulsified in two to three times the amount of water and added to the dye bath. After a further ten minutes of circulation, the specified amounts of dye dispersions per wool are added, and the temperature of the dyeing bath is increased at a rate of 2 to 5.

S ° C / min. to 106 ° C. The dyeing time at this temperature is 45 to 90 minutes, followed by cooling and rinsing of the fabrics.

Example 2

Carrier composition:

% m-dichlorobenzene concentrate, containing 50% m-dichlorobenzene, 40% o-dichlorobenzene and 10% p-dichlorobenzene, 17% ethoxylated alkylphenols of the formula

Wherein R 1 = alkyl of 9 C, n = 4 to 20, ph = phenyl,% dimethyl phthalate, industrial perfume.

The carrier of this composition can be used in dyeing 45/55 wool / polyester fabrics in jet dyeing apparatuses - see Example 1.

The transmitter can also be used for dyeing knitted fabrics of 100% polyester silk on sapphires or in horizontal dyeing apparatuses.

Dye bath composition:

x% disperse dyes g / l ammonium sulphate

0.1 ml / l acetic acid to pH = 5.5 1 to 2 g / l Corticol NNO 1 to 5 g / l carrier according to the invention - according to the desired color saturation.

Dyeing on the sapphires as well as in the horizontal dyeing apparatuses is carried out according to conventional technologies.

Claims (1)

Carrier for surface dyeing of polyester fibers and / or mixtures thereof with other fibers at a temperature of 95 to 135 ° C in open or pressure dyeing apparatus, characterized in that it contains 50 to 90% by weight of m-dichlorobenzene concentrate, comprising 30 to 60% by weight -dichlorobenzene, 30 to 60% m-dichlorobenzene, and 0 to the invention 20% p-dichlorobenzene, followed by 9 to 40% ethoxylated alkylphenols of the general formula RfPh-O- (CHfCH6O) wherein R1 is alkyl of 8 to 12 C, n is 4 to 20, Ph is phenyl, and 1 to 40% diethyl phthalate, optionally up to 2.5% industrial perfume.