SU383322A1 - - Google Patents

Description

A method of dyeing and printing textiles

MATERIALS

There is a known method of dyeing and printing textile materials from synthetic organic fibers that do not contain amino groups by padding with dyes containing carboxyl groups and drying. In order to obtain a multicolor print after drying, the textile material is printed with an alkaline paste, including dye, pigment or optical brightener that does not contain carboxyl groups, followed by heat fixation (better dry heat) and rinsing. The printed paste contains an excess of alkali. An alkali metal hydroxide and a dispersed dye are used as the alkaline agent, while the optical bleach should be stable with respect to alkali.

As synthetic fibers, fibers based on acrylonitrile, vlnilchloride, vinylidene chloride, from dicyanoethylene copolymers and vinyl acetate, based on acrylic esters, amides of acrylic acid, from copolymers are used.

acrylonitrile, polyepoxide fibers, from polyurethanes, from polyolefin, from aromatic polyesters, from 3-2 / 2 cellulose acetate. Fibers do not contain free amino groups; Blended fabrics from these polymers can be used. Textile materials are fabrics, knitwear, nonwovens, etc.

iB as dyes, any dyes containing at least a carboxylic acid group can be used, for example metal-containing or metal-free monopoly polyazo-dyes or azometype dyes, azoporphine, anthraquinone, oxazine, nitro-dyes, diphenylamine dyes, naphthalic acid, di- and triphenylmethane, condensed dyes, naphtholactam, dyes based on naphthoquinone and naphthoquinone imine and other combination si. dyes.

Along with the carboxyl group of the cranes 1

may contain the following substituents: halogen, cycloalkyl, aralkyl, aryl, alkoxy, aryloxy, nitro, sulfonic or substituted sulfonamide groups, acyl-amino groups, alkyldio, arylthio groups, hydroxy, hydroxynalkyloxy, cyanocycans, cyanocycans, cyanocycans, cyanocytes, hydroxy-

In addition to dyes, the solution for padding may contain sodium salts of highly condensed formaldehyde resins of naphthalenesulfonic acid, a waste alkaline sulfite cellulose products, condensation products of higher alcohols with ethylene oxide, polyglycol ethers of fatty acid amides and alkyl, phenols, sulfate esters or.

Spin is 20–200% by weight of the fiber, and the textile is dried with a stream of hot air at 70–150 ° C for 10–300 sec.

An alkaline printing paste containing a heat-resistant alkaline compound, for example an alkali metal carbonate (potash, soda) or an alkali metal hydroxide (sodium, potassium), is printed in an amount that ensures the conversion of the dye into an alkaline salt.

Upon receipt of a white reserve, the printed paste contains white pygmets — tchtan dioxide, zinc oxide. The paste also contains thickeners, for example, gum arabic, methyl cellulose. To obtain two-color printing, alkali-resistant dyes, in particular dispersed azo dyes that do not contain carboxyl groups, are introduced into the printing paste.

After printing, the textile material is dried with steam or hot air or is directly fixed at 100-260 ° C, preferably 150-230 ° C.

| PO) After printing, the material is washed in an organic or water bath.

Example 1. 133 parts of a 10% dye paste of 4-carboxy-4- (dihydroxyethyl-amino) -2-chloro-azobenzene, 200 parts of a 2.5% solution of sodium algnate, 1.5 volumes by volume 40% With acetic acid, water is added to 1000 hours, plus polyester fabric is added to this bath and wrung out to almost 75%. Dry the fabric for 1 min at 120 ° C and print a portion of the dried cloth and white reserve.

The fabric is printed with a paste of 20 parts of soda and 950 parts of a 2.5% sodium alginate solution. Immediately after this, the tissue is thermofixed with one minute at 200 ° C and then well washed with a solution containing the product of the addition — 9 moles of ethylene oxide to 1 mole of nonyl phenol. An orange fabric with a white reserve is obtained.

If the backup paste consists of 3% dispersed dye of 1,4-diamino-5-nitro-anthraquinone, 2% soda and 95% sodium alginate 2.5% solution and is carried out as described above, then get the fabric in orange and purple stripes.

To the printing paste it is more than a little to add additional additives, like borg-butt; - lat alomy1p-g or L -nitrobenzenesulfonate.

Example 2: Polyester fabric 1 of a water van “oh containing, in 1000 hours, 133 parts 5, of a substance named in npiir.icpe 1, containing carboxyl groups of the dye, 30 hours 1,4-diamino-5 -nitro-anthraquino 1a and 200 parts of a 2.5% sodium alginate solution, squeeze out up to 75% of the fiber weight and dry. Then

0 prints the fabric mentioned in example 1 with a stripe of colorless backup paste and after this they heat it with one minute HJH 200 ° C. Then wash the fabric with soda

5 soapy water and dry it. Fabric in olive-green and olulet strip is obtained.

Example 3. Cellulose triacetate fabric is supplemented with 2-carboxy-4-nitro-20 acetamido-4- (cyanoethyl-: 1-methoxyethyl-amino) azobeisol dye, as described in Example 1, dried and printed with white fake pasta in example 1 , heat-set at and finally washed in the presence of alkali.

5 Get a purple-red fabric with a backup pattern.

Example 4. Plus 100 hours of polyester fabric with a solution of 8 parts of the dye structure

.N)

/

Noros

 N - K

in 1000 hours of methyl sulfide oxide, squeeze it to 60% of the fiber weight and dry for 1 minute at

100 ° C with a stream of hot air. Then, dried tissue is printed on with a printing paste, which, in addition to sodium alginate, contains 1000 parts of sodium carbonate and 100 parts of zinc oxide in 1000 parts of pasgi.

Then the printed fabric is dried and it is heat-set for 1 min at 200 ° C. After a soap treatment with a solution of 2 g / l of hydrosulfide, 2 g / l of a fatty amine addition product to a polyethylene film and 2 g / l of 35% lye sodium liquor at 80 ° C, it is additionally washed with fuel. A white pattern is obtained on a yellow background.

Example 5. The process is carried out as described above, but alkaline-printed nacia

additionally contains dispersed dye 1,4-diamino-5-nitroanthraquinone. The result is therefore a purple drawing of a la yellow background.

Example 6: Each of the three pieces of polyester fabric bath, consisting of 120 g / l of one of the three dyes mentioned in examples 1, 3, and 4 containing carboxyl groups, 100 g / l of a 12% sodium algipate solution, and 2 g are added; / l 40% acetic acid

acids, squeeze them out to about 55% by weight of the fiber and dry in an oven at 80-100 ° C.

The fabric is printed with a white reserve striped, consisting of 40 g-ag of caustic soda

(36 ° Be), 200 g // sr of rongalite C (sodium formaldehyde sulfoxyglyate), 260 g / kg of water and 500 g // cg of a 10% aqueous solution of carboxymethylcellulose (Solvitose C 5).

Instead of a white reserve, a color reserve containing 10 g / kg of sodium liquor (36 ° Be), 440 g // cr of water and 550 g // cr of a 10% aqueous solution of carboxymethylcellulose (Solvitose C 5) can be consumed. Topkob grind free from carboxygroup dye. Dye. serves, for example, as shown in example 1 anthraquinone dye.

Striped printed weaves and shades of which are the same as in the examples given.

Instead of the dyes mentioned in Examples 1, 3, 4, other dyes containing carboxyl groups can also be used.

Example 7. The fabric is made of unmodified polypropylene, as it was done in Example 6, dried and printed as white reserves, but the compound of the structure is used as a dye

HOOG-O-N-NO

Х2Н „-СК

and heat fabric 2 minutes at 150 ° C. A yellow stripe pattern is obtained with a white reservation.

Example 8. Pl. Insulated polyester O fabric 14 hours dye structure

N

NcSOOI 11

NC

Sleep

five

sn,

which is dispersed in 1000 hours, dried it

1 min at 120 ° C with a stream of hot air and print a picture on it. For this purpose, a printed alginate thickened solution containing 50 g1l of dioxide is used.

titanium (rutile), 40 g / l soda and 50 g / l magnesium carbonate. Dry the fabric as it is. But above, heat one minute at 190 ° C. It is washed with water and the furnace is loaded into a bath of 5 g / l of sodium hydrosulfite and 10 g / l of naive liquor (36 ° Be). After washing it is dry. It has a white p nunok on a blue background.

Subject invention

Claims (5)

1. A method of dyeing and printing textiles from synthetic linear polymers that do not contain amino groups, by adding dyes, contains carboxes, and drying them, characterized in that they obtained a neutral print, after drying textiles This material is printed with an alkaline paste, including carcinyl carboxy dye, an optical bleach pigment, followed by thermal fixation and washing. 2. A method according to claim 1, characterized in that g 1droc 1c of an alkali metal is used as an alkaline agent for printing paste. 3. The method according to p. 1, dated.-1Pchayu1tsii with the fact that the printing paste contains an excess of alkali. 4. Method according to paragraphs. 1-3, characterized in that the printing paste contains an optical bleach or disperse dye that is stable in proportion to 0 to whole. 5. Method according to paragraphs. 1-4, characterized in that the fixation is carried out, for example, by dry heat, preferably at 150-230 ° C.