SU439095A3 - METHOD FOR FINISHING TEXTILE MATERIAL FROM SYNTHETIC FIBER - Google Patents

Description

one

The invention relates to the technology of textile finishing production, namely, to the technology of optical bleaching of textile materials, for example. tissue.

There is a method of finishing textile material made of synthetic fiber by surface contacting of the material under pressure and at a temperature of 15 ° -25 ° C with a temporary substrate, onto which the finishing composition is applied. The method is intended for dyeing a textile material. According to this method, a finishing composition containing a dye in an environment of an aqueous-organic solvent sublimated at 15 ° -22 ° C is used.

The purpose of the invention is to provide effective bleaching of textile material: synthetic fiber. This goal is achieved due to the fact that they use a finishing composition containing an optical bleach sublimated at 150-22 ° C in an organic solvent: l.

The use of an anhydrous finishing compound facilitates the process of applying it to a temporary substrate, especially of paper, eliminates the stickiness of the substrate, and accelerates the drying process.

Fiber, yarn, fabric, knitwear, felt, carpets and other types of textile material made from synthetic, for example polyamide or polyester fiber, are subjected to finishing. Finishing is carried out locally or over the entire surface of the material. With the introduction of dyes into the finishing composition, simultaneously with bleaching, a 1-brush packing is obtained on the surface of the material.

As a temporary substrate, a sheet of paper or metal, for example aluminum, is used, if necessary, pasted on a paper tape, or a sheet of paper, a film of regenerated cellulose, etc.

The finishing composition is a solution, varnish, emulsion or dispersion containing not more than 15 weight. % water, organic solvent, optical bleach sublimated at 150-220 ° C and heat resistant thickener or binder. Dyestuffs sublimated at 150–22 ° C can be simultaneously introduced into the finishing composition. Alkali metal alginates, locust gum, tragant, carboxymethyl cellulose and, mainly, organic solvents soluble nitrocellulose and other cellulose ethers, for example methyl, ethyl, hydroxyethyl or hydroxypropyl cellulose, are used as binders. The dyes used are 1-hydroxy-3-phenoxy-4-minoanthraquinone (red), 1,4-dimethylaminoanthraquinone (blue), 4- (4 methyl-2-nitrophenylazo) -3-methyl-5-pyrazolone (yellow color), butyl or propyl ester of 1,4-diaminoanthraquinone-2-carbonic acid (blue color), hydr1-rxi: inof alone (yellow color). Optical brighteners used according to the invention, must be. heat resistant within temperatures up to 25 ° C; In addition, they should not contain acid residues that give solubility in water, for example, carboxyl groups or sulfo groups. Of particular interest are those bleaching agents that contain at least one benoxazolthiophene radical. They correspond, for example, to the formula HC-CH with V in which R is a benzene radical condensed as indicated in the formula, with

-CH-CHX

h

oxazole, and R is a benzene ring radical. The second radical of benzoxazole is connected in position 2 with a thiophene ring or a functionally altered carboxyl group. It is also possible to use dibenzothiophene -bioxide-type bleaching agents, which may contain amino groups, in some cases acylated, or coumarin derivatives, pyrazolines, mono- or bisoxazoles, as well as products corresponding to the formula Cn, lN "-" X c wherein R is hydrogen or an aryl group, y is hydrogen or chlorine and X is a substituent-CO-I - (is an amino group or aryl-O-) or chlorine. As an example of the optical beaters used in the proposed process, mention should be made of 4-methyl-7-diethylaminocoumarin and forum products.

ns-mon, g

II 11 / g

with s-s

s

ns-ns x

 II II / s s- s

 / 5о

NS-CH

11 11 /

f fvV V

V

NS-CH l P II /

S 0

DOS

one.

NchS

coaxially N NS-SN NS-SN

NchSOOS

sx

coaxially CH, C-CH3

C N

coaxially

CH CH- / V-TNl

r

N

SO.-NH-CgHn

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0 0

0

C-CH-CH

/ 0

c.

sh

CH-C

0

/

h

N

Cl

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about 0

DOS

NzS-S

.si /

oh oh

eleven

Optical bleaches are chosen depending on the type of synthetic fiber. So ,,; when bleaching material from H 11 II

g f g

P 0

12

Polyacrylonitrile fibers mainly use the following optical brighteners:

NS-CH

L / VJ vj

sn

 eleven /

From polyamide bleaches of the formula NdS C According to the invention, the material is finished as follows. They are preliminarily applied by known methods, such as photo films or heliogravures, to a temporary substrate, and then after drying, the temporary substrate is brought into contact with the surface of the material to be subjected to finishing, slightly pressing them together, while heating up to 150-250 ° C. 210-230s. NekontaktiNS- CH,.,

CtCH)

5J3

- with ss

Y

CtCH,)

EZ 1SI --- N I 11 The side of the material with a temporary substrate can be slightly cooled. The method is carried out using the following devices: iron, ironing machine, heating plate, ironing drums. Example. Preparing the finishing composition, carefully shifting 1 wt. including ethylcellulose N 22, 3 weight.h derived thiophene formula

13

h 1

0 y

57 wt. including methyl ethyl ketone and ZO weight. including ethyl or propanol alcohol. The composition is applied on a temporary substrate, for example, paper tape or aluminum film, with a thickness of 20 cm; Only 6 microns and dry. After drying, the printed side of the aluminum sheet (or paper) is brought into contact with a polyester fabric (polyether terephthalate). Industrial ironing machine is applied at a temperature of 185 ° C for 1 min to the non-nib. paper on fabric that fits on a smooth lpd

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f С С-С

V -0

R

ns-sh

II and

V

ns-ns-ns

14

snh ss s

sweetener. After removing the paper, it is found that the polyester fabric is significantly whiter,

15 than the raw fabric.

According to the invention, it is also possible to use a continuous device, which regulates the movement of a rammer.

2Q bumps; {: SH in such a way that they remain in contact, for example, 15 seconds at 21 ° C or 25 seconds at 200 ° C.

Instead of the products of this formula, you can also use the following products, which give a similar effect to optical bleaching:

consistent with

PRI me R 2.

Prepare preforms: Preform I: the whitener of the formula

NlS

Nn

(w) h

Billet L: a mixture of equal weight; the output of ethyl cellulose n 1-hydroxy-3; phenoxy-4-aminoanthraquinone.

Billet 1P: a mixture of equal weight parts of ethyl cellulose and 1,5-dime-. Tylaminoanthraquinone.

Billet IV: a mixture of equal weight parts of ethyl cellulose and oxyquinophthalone.

The finishing composition is prepared from 3 weight, h of the workpiece and 97 weight. including mixtures (1: 1) of methyl ethyl ketone and ethyl alcohol. If necessary, the viscosity of the composition is changed by the addition of ethyl cellulose. With the help of these compositions i stuffed on a sheet of paper; a multi-color pattern, then dried in a stream of hot air. After drying, the printed side of the temporary substrate is brought into contact with a polyamide (polymer-caprolactam) fabric and heated in an industrial ironing press continuously at 200-205 ° C. The transmission time is adjusted.

Subject invention

The method of finishing textile material from synthetic fiber by superficial contacting of the material under

pressure and at a temperature of 150-250 C 85 I with a temporary substrate, onto which a finishing composition is applied, characterized in that, in order to effectively bleach the material, a finishing composition containing optical brightener sublimated at 150-220 ° C is used in the environment of an organic solvent.

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