DE1619607C3 - Process for the production of dyeings on textile materials - Google Patents

Description

The invention relates to a process for the production of dyeings on textile materials from natural or regenerated cellulose textile fibers mixed with polyester textile fibers.

From the Spanish patent specification 303 705 a process for dyeing cellulose and polyester textile fibers is known, in which a mixture of a dye mass is applied to this, which is composed of water, a thiosulfuric acid derivative of a sulfur dye, a disperse dye and a fixing agent, such as thiourea or urea, consists of what is dried and means of elevated temperature is fixed. There are some difficulties with this proposed method because e.g. B. a) the Accessibility and thus the cost of the fixation means is far more cumbersome or expensive than in the present process, b) the fixative when heated to some extent of a chemical Decomposition with a number of disperse dyes show resulting in a lower color yield than results in the present process with these disperse dyes, c) the thiosulfuric acid derivatives the sulfur dyes in the known process strongly adhere to the polyester fibers as well fix to the cellulose fibers, while in the present process the thiosulfuric acid derivatives the sulfur dyes do not fix to the polyester fibers and d) themselves with the proposed method results in greater damage to the cellulose fibers than in the present method of Case is ..

The German Auslegeschrift 1 004 586 describes a process for dyeing cotton and regenerated cellulose known with sulfur dyes without the use of reducing agents, the cellulosic Material with solutions of water-soluble reaction products of sulfur dyes with Salting the sulphurous acid is padded and then the padded material is heated to elevated temperatures will. In the known method, a water-soluble sulfur dye is by. ionic Complexing with permethylated polyimines made water-insoluble. However, these are ionic complexes unstable to alkaline washing treatments and are easily split off in the process.

In "American Dyestuff Reporter", 1964 (P 133), p. 39, sulfur dispersion systems are described in which the disperse dye is padded with a weighting agent, preferably at room temperature, after which it is treated with infrared rays and dried in a controlled manner. After heat setting for 60 to 90 seconds at about 204 to 213 ° C, the textile material is placed in a chemical padding bath which contains the reduced sulfur dye and is maintained at a temperature in the range of about 38 to 204 ° C. In a wet pick-up of 50 to 60%, the textile products in a damper which is maintained at 100 ⁰ C are guided and held in 25 to 60 seconds.

Coloring from reducing agent baths of sulfur dyes has essential practicalities Disadvantage. When dyeing from such baths, many sulfur dyes separate through air oxidation After a short time, a so-called flower, which consists of a thin membrane, appears on the surface of the bath represents insoluble sulfur dye that sticks to the goods when they are removed and for May give rise to staining. This disadvantage is particularly evident when the goods is brought several times from the dyebath into the air within several passes.

The invention is based on the object of providing a method for producing dyeings on textile materials, those made from natural or regenerated cellulose textile fibers mixed with polyester textile fibers, exist to create in which the disadvantages of the known methods are avoided and flawless Wet-fast dyeings are made possible on the textile materials mentioned.

The method according to the invention is characterized in that an aqueous dyeing composition consisting essentially of water, a finely divided suspension of disperse dyes, a dispersant and a solution of water-soluble organic dyes of phthalocyanine, metal phthalocyanine, is applied to these textile fabrics. Pyrazolone, anthraquinone, dioxazine, sulfur, azo, dibenzanthrone, or perylene type, the water-soluble organic dyes per molecule at least one of the thiosulfate groups —SSO ₃ Na, —SSO ₃ K or _{—SSO 3} NH ₄ comprise applying, drying the fabrics, heated sufficiently to polyester fibers for the fixation of the disperse dye, an aqueous solution of Na ₂ S ₂ _ _4, which may contain a water-soluble inorganic electrolyte, optionally, applying and washed with water.

The process of the invention is particularly advantageous because it is rapid, economical, and continuous can be carried out and wet-fast dyeings with excellent color yield. In addition, there is no decomposition of the disperse dyes here on, and since the heating of cellulose fibers to a high temperature in the presence A fixative is avoided, the damage or deterioration of cellulose fibers lowered to such a level that it almost has to be described as avoided. The cellulose and polyester fibers can be of substantially the same color or different colors, such as desired, can be dyed by adding a thiosulfate dye of the desired shade for the cellulosic fibers and a disperse dye of the desired depth of color is selected for the polyester fibers.

The method according to the invention is particularly suitable for woven piece goods, although it is also with Fibers in a number of forms, such as knitwear, nonwoven fabrics, and Strands or fleeces of yarn, can be applied.

Natural cellulosic fibers are suitable for use herein and include, among others Cotton and linen.

In the regenerated cellulosic fibers suitable for use include e.g. B. copper ammonium Viscose rayon and rayon with a high wet modulus and good alkali resistance.

To use suitable polyester textile fibers are z. B. linear polyester textile fibers, which are in the Reaction of a polybasic acid with a dihydric alcohol result.

If desired, the aqueous dye composition can also dye auxiliaries, for example penetrants, such as anionic or nonionic surfactants for thorough and uniform moistening the cellulose fibers through the water-soluble organic thiosulphate dyes, migration inhibitors, such as sodium alginate, and NaCl.

Water-soluble organic dyes with at least one thiosulfate group per molecule are used present use suitable and z. B. from U.S. Patents 2,180,805, 2,245,971, 2,283,326, 3,097,908; 3,088,790 and 3,100,673; British Patent Nos. 490,945, 510,453 and 953,428 and Den Belgian patents 608 829 and 652 691 known. They can be found in a variety of ways produce, for example, by reacting pig dyes and alkali metal sulfites or by Coupling of diazotized aromatic amines containing thiosulphate groups with coupling components or by condensation of reactive halogen derivatives of dyes with aliphatic ones or aromatic amines containing thiosulfate groups. The thiosulfate groups can be attached directly to a carbon atom of an aromatic ring of the dye or via bridges of aliphatic or hydrocarbon radicals which, if desired, can be substituted and by heteroatoms can be interrupted, be bound. Such dyes usually contain 1 to 4 found Thiosulfate groups, and in the case of azo dyes, the thiosulfate groups can either be present on the diazo component or on the azo coupling component or both.

The disperse dye is dispersed in the aqueous medium with the aid of a dispersant, and the water-soluble organic thiosulfate dye is in aqueous solution herewith, if the aqueous one, this Compounds containing dye composition is applied to the textile materials.

The aqueous dye mass can be obtained by mixing an aqueous suspension of the disperse dye, which already contains the suitable dispersant with the water-soluble organic thiosulphate dye, which are in the form of a paste, a powder or an aqueous solution before mixing can be produced.

The aqueous dispersion of the disperse dye can be prepared in a customary manner, for example by diluting a disperse dye powder having a particle size of 10 to 40 microns or an aqueous disperse dye paste having a particle size of 0.1 to 1 micron which is already containing the dispersant with water.

Disperse dyes are a well-known class of dyes, many of which are known as C.I. disperse dyes are listed in the Color Index. A group of disperse dyes that are particularly suitable in the present method are e.g. B. those of the benzothiazole, anthraquinone pyrazolone, Methine, quinizarine, azo, nitrodiphenylamine, nitroacridone, quinoline, naphthaquinone and Naphth (2,3-b) indolizine type.

The term “azo dyes” used here denotes dyes with at least one - N = N group per molecule, and this also includes dyes with more than one —N = N group per molecule.

The amount of each dye employed in the aqueous dye composition is determined by the depth of the for each Determines the desired coloration, the disperse dye for the polyester fibers and the fiber water-soluble organic thiosulfate dye is intended for the cellulose fibers. General will be about 1 to 120 g, usually 15 to 30 g, of the disperse dye and about 0.1 to 100 g and usually 5 to 50 g of the water-soluble thiosulfate dye, calculated as solids, per liter of the aqueous dye mass used. It goes without saying that at least one disperse dye and at least a water-soluble thiosulfate dye is used in the aqueous dye composition and that if desired more than one disperse dye and / or more than one water-soluble thiosulfate dye in the dye composition can be used.

The aqueous dye composition is then applied to the mixed fibers. The application can be on any desired manner, for example by dipping, spraying or roller coating but advantageously by means of a 2, 3 or 4-fold pad roller covered with rubber Press rollers is equipped at the block box outlet. The aqueous dye composition can be from room temperature up to about 85 ° C and is preferably between about 35 and 60 ° C applied.

After applying the aqueous dye mass, the fibers are practically dried to dryness, for example by means of hot air in a heated, closed stenter frame, by means of infrared heat or contact heat. If desired, the fibers can be bathe or steamed before drying to promote the penetration of the thiosulfate dye into the cellulose fibers.

After drying, the fibers are heated sufficiently to cause the disperse dye on the polyester fibers to fix. This heating is used to heat-set disperse dyes on polyester fibers usually carried out, and the water-soluble organic thiosulfate dye has no influence to the usual heating or disperse dyes, nor is the water-soluble thiosulfate dye The usual heating devices for thermosetting the disperse dye are influenced by the heating process are hot-air roller curing ovens (thermosol ovens), Infrared ovens and contact heat, for example from hot rotating cylinders. Time and temperature for heating polyester fibers to fix disperse dyes are mainly used by the applied heating device and the weight of the textile material and to some extent determined by the moisture content of the practically dry textile material at the beginning of the heating time.

In general, the temperature varies inversely with time. If hot air ovens are applied, the fixation may be achieved by the substantially dry textile materials dry hot air from 175 to 235 ° C for about 15 seconds to 3 minutes, usually 200 to 220 ⁰ C during 45 to 90 seconds and preferably 21O ⁰ C for Exposed for 90 seconds. If hot rotating cylinders are used, fixation can be achieved by bringing the textile materials into contact with the cylinders heated to about 200 to 235 ° C for about 12 to 20 seconds, preferably 15 seconds at 210 ° C. If infrared ovens are used, the fixation can be achieved if the practically dry textile materials are exposed to infrared units of about 435 to 1100 ° C. for about 6 to 10 seconds in the usual manner.

Subsequent to the fixation of the disperse dye in the polyester fibers, the fibers carrying the unfixed water-soluble organic dye in the Thiosulfatsalzform brought ₂ _ ₄ -Fixierlösung into contact with an aqueous Na ₂ S to the water-soluble organic dye to be fixed on the cellulose fibers.

The fixing solution comprises an aqueous solution of Na ₂ S ₂ _. ₄ The term Na ₂ S ₂ ^ _{4 used here} denotes a sodium polysulphide or mixtures of sodium polysulphides, for example disodium sulphide or disodium trisulphide or disodium tetrasulphide or mixtures of two or three such polysulphides. In the case of mixtures, the designation 2-4 on the sulfur atom is not necessarily an integer. Sodium polysulfides are known and can be prepared by adding sulfur bloom to a hot aqueous solution of sodium sulfide.

The amount of Na ₂ S ₂ _ _{4 used} relates to the amount of the water-soluble organic thiosulfate dye to be fixed; about 0.07 to 0.46 g Na ₂ S ₂ _ _4, and preferably about 0.214 g Na ₂ S ₂ _ ₄ can be applied to the fibers for each gram Thiosulfatfarbstoff to the fibers. The fixing solution can also contain, if desired, a simple water-soluble inorganic electrolyte, for example NaCl, in order to prevent such dyes which have a tendency to bleed out into the fixing solution. About 25 to 30 g NaCl per liter of fixing solution are suitable for this purpose.

The Na ₂ S ₂ _ ₄ is applied as an aqueous solution to the fibers usually at room temperature and can, spraying, dipping be applied to the fiber in the solution or any other suitable method by a Klotzabquetschverfahren.
A quick and convenient method is e.g. B.

ίο in that the fibers with the unfixed water-soluble organic thiosulfate dye on them are passed through a block box containing about 1 to 10 g Na ₂ S ₂ _ ₄ per liter of fixing solution to 1 percent by weight of the thiosulfate dye on the fibers, whereupon the fibers are squeezed between rubber-coated press rolls, so that a 60% moisture absorption of the fixing solution, based on the fiber weight, is established. The fixation of the thiosulfate dye is very rapid and can be referred to as instantaneous for practical purposes. The fixation can usually be regarded as finished when Γ dye and Na ₂ S ₂ _ _{4 were} in contact for about 1 to 30 seconds.

There is no particular advantage if the Na ₂ S ₂ _ ₄ solution is kept above room temperature.

After contact with the Na ₂ S ₂ _ _4, the fibers are washed with water, which may be at room temperature. The water is used to remove polysulphide salt residues and other water-soluble residues from the fibers. If desired, the fibers can be passed through air, steam, or saline solution prior to washing.

After washing, the fibers can be rinsed and dried in the usual way.

The following examples serve to further illustrate the invention, all parts referring to the Are by weight unless otherwise specified.

example 1

An aqueous coloring mass of 45 g of the sodium salt of a dye obtained by coupling equimolar amounts of diazotized sodium S-4-aminophenylthiosulfate and acetoacet-2 ', 5'-diethoxyanilide, in solution, from 24.75 g of CI. Disperse Yellow 42 (CI. No. 10 338), in dispersion, 19 g of sodium H-methyl-N-oleyl taurate as a dispersant and 3.5 g of sodium alginate as a migration inhibitor per liter of water was spread out on a woven cloth at 49 ° C. Form with a weight of 185 g / m ^{2 applied} by means of a pad which consisted of 35% cotton mixed with 65% linear polyester textile fibers DACRON; the fabric was squeezed to 60% moisture absorption, based on the fabric weight, with rubber-coated press rollers; then it was practically dried to dryness in a drying oven with air heated to 93 ° C, for 90 seconds through a thermosol oven, with dry hot air at 204 ° C to fix the disperse dye in the polyester, then through a double cushion roll, one Solution of 5 g Na ₂ S ₄ and 250 g NaCl per liter of water at room temperature contained, whereupon to 60% moisture absorption, based on the fabric weight, squeezed off, rinsed with water at room temperature, soaped, rinsed with hot water and

1 619 6Q7

was dried. Both kinds of the fibers were colored yellow, and the coloring was excellent Authenticity in wet processing.

Example 2

In this example, the procedure was as in Example 1, but an aqueous dye composition of 10.5 g of des Sodium salt of one in the reaction of 1 mole of copper phthalocyanine trisulfonyl chloride with 3 moles of sodium S-4-aminophenyl thiosulfate obtained dye, in solution, from 10.5 g

CO _x

NH

CO '

O NH ₂

CH ₃ -C = N

in solution, 7.2 g

in dispersion, 9 g
HO

IO

in dispersion, 7.9 g of sodium N-methyl-N-oleyl taurate as a dispersant and 5 g of sodium alginate as a migration inhibitor per liter of water was used in place of the aqueous dye composition according to Example 1 used; the thermosol oven also had a dry one Hot air of 232 ° C through which the material was passed for 15 seconds. Both types of fibers were dyed blue and the dyeing had good washfastness.

B e i s ρ i e 1 3

In this example, the procedure was as in Example 1, but an aqueous dye composition of 13.1 g the sodium salt of one in the reaction of 1 mole of copper phthalocyanine trisulfonyl chloride and. 3 moles Sodium S-4-aminophenyl thiosulfate obtained dye, in solution, 7.5 g

SSO ₃ Na

OH

O ₂ NO NH

in dispersion, 12.2 g of sodium N-methyl-N-oleyl taurate as a dispersant and 4 g of sodium alginate as a migration inhibitor per liter of water instead of the aqueous coloring material according to example 1 used. Both types of fibers were colored green as well had very good fastness to wet treatments.

Example4

The procedure was as in Example 1, but an aqueous dyeing composition of 16.9 g

SSO ₃ Na

in solution, 6.75 g of the sodium salt of a diazotized by coupling equimolar amounts Sodium S-4-aminophenyl thiosulfate and acetoacet-2 ', 5'-diethoxyanilide obtained dye, in solution, from 1.15 g of soluble C.I. Sulfur Green 2 (CI. No. 53 572) in the form of the sodium salt, in solution, 14 g

HO O

45

H C O

in dispersion, 1.9 g

CH,

QH ₅

C ₂ H ₄ CN

in dispersion, 12 g of sodium N-methyl-N-oleyl taurate as a dispersant and 2 g of sodium alginate as a migration inhibitor Instead of the aqueous dye composition according to Example 1, per liter of water is used. Both Kinds of fibers were dyed golden orange and were true to wet treatments.

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B e i s ρ i e 1 5

An aqueous coloring composition made from 30 g of the sodium salt of one obtained by condensation of 1 mol of phthalocyanine disulfonyl chloride and 2 moles of sodium S-4-aminophenyl thiosulfate obtained dye, in solution, 25 g

C-N = N

C ₂ H ₄ CN

O = S = O
CH ₃

25th

in dispersion, and 12.5 g of sodium M-methyl-N-oleyl taurate as a dispersant per liter of water were applied at 60 ° C. to a woven shirt fabric in an open form with a weight of 174 g / m ² , which consists of 35% cotton and 65% polyester linear textile fibers; the fabric was squeezed to 60% moisture absorption, based on the fabric weight, with rubber-coated pressure rollers, dried to dryness on a heated tenter frame located in a housing with hot air sections of 60, 80 and 110 ° C, for 90 seconds through a thermosol oven , which contained dry hot air at 210 ° C to fix the disperse dye in the polyester, then passed through a triple cushioned roller box containing a solution of 15 g Na ₂ S ₄ and 200 g NaCl per liter of room temperature water, to 60% Moisture absorption, based on the weight of the fabric, squeezed off and washed with water at room temperature. The cotton was dyed turquoise and the polyester was dyed red.

Example 6

40

An aqueous coloring mass of 12.5 g of the sodium salt obtained by reacting 1 mol of copper phthalocyanine trisulfonyl chloride and 3 MqlNatriurn-S- (2-aminoethyl) thiosulfate obtained dye, in Solution, 15 g - ~

H NO ₂

Containing hot air of 177 ° C, was guided to fix the disperse dye in the polyester fibers and then passed through a cushioning device containing a solution of 2 g Na ₂ S ₃₁ SJ ^e liter of water at room temperature, and to 60% moisture absorption, based on the Tissue weight, squeezed off, washed with room temperature water, soaped, rinsed with water and dried. The viscose was dyed blue and the polyester was dyed yellow.

Example 7

An aqueous coloring mass of 32 g of the sodium salt of a diazotized by reaction of equimolar amounts! Sodium S-4-aminophenylthiosulfate and l-phenyl-3-methyl-5-pyrazolone, obtained dye, in solution, 30 g of Ci. Disperse Yellow 8 (Ci. No. 12 690), in dispersion, 24 g of a sulfonated naphthalene-formaldehyde condensate as a dispersant and 2.5 g of sodium alginate as a migration inhibitor per liter of water was spread out onto woven piece goods using a cushion at 60 ° C Form with a weight of 185 g / m ² applied, which consisted of 30% copper ammonium rayon mixed with 70% linear polyester textile fibers, whereupon the fabric was squeezed to 60% moisture absorption, based on the fabric weight, practically to dryness in an oven that contained, on a 149 ° C heated air was dried and again rotating through a series of cylindrical drying rollers made of stainless steel having a surface temperature of 21O ⁰ C for 15 seconds were performed to fix the disperse dye in the polyester fiber; Finally, it was passed through a cushioned _{box containing a solution of 12.9 g Na 2} S ₃ and 200 g NaCl per liter of room temperature water, rinsed with room temperature water, soaped, rinsed with hot water and dried. Both types of the fibers were colored yellow.

Example 8

An aqueous coloring mass of 42 g
O NH-CH ₃

in dispersion, 10 g of the sodium salt of a technical lauryl alcohol sulfate as a dispersant, 5 g NaCl and 3 g sodium alginate as migration inhibitor per liter of water was applied to woven piece goods in an exposed form with a weight of 122 g / m ² using a pad at 38 ° C, which consisted of 35% viscose rayon, mixed with 65% linear polyester textile fibers, whereupon the fabric was squeezed off to 60% moisture absorption, based on the fabric weight ^{, and dried practically to dryness in an oven containing air heated to 149 0} C, whereupon for 3 minutes through a thermosol oven, the dry one

OH

NH - CH, - CH - CH, - SSO, Na

in solution, 20 g Ci. Disperse Blue 27 (CI No. ^60767).; in dispersion, 15 g of sodium lignosulfonate as a dispersant, 4.5 g of sodium alginate as a migration inhibitor and advantageously 7.5 g of a nonionic oxyethylated oil as a penetrant per liter of water was applied to woven piece goods with a weight of 214 g / m using a cushion at 60 ° C ² , which consisted of regenerated, Polynosian textile fibers "Moynel" and 65% linear polyester textile fibers, whereupon the fabric is squeezed to 60% moisture absorption, based on the fabric weight, predried in a loop dryer from 66 ° C to about 30% moisture content, practically for Dryness is dried in a hot air oven of 12 Γ C and then through a thermosol oven that has dry hot air from

218 ° C, was performed for 30 seconds to fix the disperse dye in the polyester fibers; then in a cushioned box containing a solution of 20 g of Na ₂ S ₂ and 200 g of NaCl per liter of water at room temperature, performed

60% moisture absorption, based on the weight of the fabric, squeezed off with water at room temperature rinsed, soaped, rinsed with hot water and dried. Both types of fibers turned blue colored.

Example 9

An aqueous coloring mass of 25 g

H ₅ C ₂ -N

NC ₂ H ₅ (SO ₂ NHCH ₂ CH ₂ SSO ₄ Na) ₄

in solution, 12 g

CH

N (CH ₂ CH ₂ OCCH ₂ CH _{3) 2}

in dispersion, 9 g of sodium N-methyl-N-oleyl taurate, 1.5 g of sodium alginate as a migration inhibitor and 7.5 NaCl per liter of water was applied to a woven cloth in an open form with a weight of 92 ° C. using a cushion at 54 ° C , 7 g / m ² applied, which consisted of 50% linear polyester textile fibers, whereupon the fabric to 60% moisture absorption, based on the fabric weight, squeezed, dried practically to dryness on rotating cylindrical drying rollers made of stainless steel heated to 54 ° C, while 90 seconds through a thermosol oven ^{containing dry hot air at 204 0} C to fix the disperse dye in the polyester fibers; It is then passed through a four-fold upholstery _{roll box containing a solution of 5.3 g Na 2} S ₄ and 100 g NaCl per liter of room temperature water and squeezed to 60% moisture absorption, based on the weight of the fabric, then through a Klptz box with water guided from room temperature, squeezed off, soaped, rinsed with hot water and dried. The linen is dyed purple and the polyester is dyed yellow.

Example 10

An aqueous stain made from 22.5 g of solubilized C.I. Sulfur Brown 52 (C.I. No. 53,321) in the form of the sodium thiosulphate salt, in solution, 55 g

O OH

OCH,

in dispersion, and from 40 g of the sodium salt of a technical lauryl alcohol sulfate as a dispersant per liter of water, by means of a pad application at 60 ° C on a non-woven cloth (in layers) in an open form with a weight of 83 g / m ² from 35% cotton and 65% polyester linear fiber blue dye applied; the cloth was squeezed off to 60% moisture absorption, based on the cloth weight, practically dried to dryness in an oven containing hot air at 175 ° C, for 90 seconds through a thermosol oven containing dry hot air at 210 ° C, to fix the The disperse dye passed into the polyester and then passed through a block box containing an aqueous solution of 13.2 g Na ₂ S ₃ per liter at room temperature and squeezed off to 60% moisture absorption; then it was steamed for 30 seconds at 108 ° C, rinsed with water at room temperature, soaped, with

Rinsed with hot water and dried. The cotton was dyed brown and the polyester fiber was dyed blue colored.

Example 11

An aqueous coloring mass of 55 g of the sodium salt obtained by coupling 1 mole of diazotized sodium S-4-ammophenylthiosulfate and 1 mole of 8-amino-2-naphthol and coupling equimolar amounts of the product obtained and of diazotized sodium S-4-aminophenylthiosulfate Dye, in solution, 30 g CI. Disperse Yellow 23 (CI. No. 26 070), in dispersion, 22 g of a sulfonated naphthalene-formaldehyde condensate as a dispersant and 3.5 g of sodium alginate as a migration inhibitor per liter of water was applied to a folded fabric using a cushioning process at 38 ° C, which weighed 146 g / m ² in expanded form and consisted of 35% viscose rayon and 65% linear polyester fiber, applied; the fabric was squeezed to 60% moisture absorption, based on the fabric weight, practically to dryness in a tenter frame mounted in a housing with section drying chambers which had air at 77, 93 and HO ⁰ C, and dried for 1 minute through a thermosol oven , which contained dry air at 204 ° C, led to the fixation of the disperse dye on the polyester fiber, whereupon passed through a double pad roller moistening device with a solution of 11 g Na ₂ S ₂₅ and 150 g NaCl per liter of water at room temperature, to 60% moisture absorption, based on the weight of the fabric, squeezed off, rinsed with water at room temperature, soaped, rinsed with hot water and dried. The viscose rayon turned black and the polyester fiber turned yellow.

Example 12

A Garnvlies of 15 g of 35% Kupferammoniumreyon mixed with 65% linear polyester textile fibers, was for 30 minutes in an aqueous dye content of 60 ⁰ C of 15 g of the sodium salt of the obtained by reacting 1 mol of disulfonyl chloride of Isodibenzanthrons and 2 moles of sodium S- (2-aminoethyl) thiosulfate obtained dye, in

Solution, 10.5 g

NO ₂

NH

SO ₂ -NH

in dispersion, 7.5 g of sodium lignosulfonate as a dispersing agent and advantageously 7.5 g of an oxyethylated nonionic vegetable oil as a wetting agent, per liter of water immersed; the yarn was squeezed to 60% moisture absorption, based on the yarn weight, practically dried to dryness with air at 93 ° C, heated with drying air at 218 ° C for 90 seconds to fix the disperse dye in the polyester fiber, then for 30 seconds in a Solution of 7.5 g Na ₂ S ₄ and 300 g NaCl per liter of room temperature water is immersed, rinsed with room temperature water, soaped, rinsed with hot water and dried. The rayon fibers were colored blue and the polyester fibers were colored yellow.

Examples 13-19

The listed in the following table examples ~ - play an aqueous dye composition consisting of 40 g (of Thiosulfatfarbstoffes listed in column 2, in solution, 32 g of the disperse dye listed in column 3, in suspension, 24 g of sodium N-methyl- N-oleyl taurate as a dispersant and 3.0 g of sodium alginate as a migration inhibitor per liter of water by means of a padding application at 60 ⁰ C in woven

Piece goods with a weight of 180 g / m ^{2 applied} in spread form, which consisted of 35% cotton and 65% linear polyester textile fibers; the fabric was 60% moisture absorption, based on the fabric weight, squeezed, practically dried dryness with air of 93 ° C, for 90 seconds contained by a thermosol oven, the dry hot air at 210 ⁰ C, to fix the disperse dye in the Polyester material out, through a four-fold pad roller device, which contained a solution of 250 g NaCl and 8 g Na ₂ S ₄ per liter of water at room temperature, guided, squeezed to 60% moisture absorption, based on the weight of the fabric, through a four-fold pad roller device with water from Room temperature ( controlled, soaped, rinsed with hot water and dried. The cotton was dyed with the color indicated in column 4 and the polyester with the color indicated in column 5).

example

Thiosulfate dye

Disperse dye

cotton
colored

Polyester dyed

SO ₂ NHCH ₂ CH ₂ SSO ₃ Na
O

CI Disperse Orange 5
(CI. No. HlOO)

Red

orange

NaO ₃ SSCH ₂ CH ₂ NHO ₂ S

Sodium salt of the coupling of equimolar amounts of diazotized 3-aminobenzylthioschwefelsäure and 3- (2 ', 3'-hydroxynaphthylamino) - Benzylthiosulfuric acid obtained dye

Scarlet fever

yellow

Continued 16

example
No.

Thiosulfate dye disperse dye

cotton
colored

Polyester dyed

N = N-IL ^ -SO ₂ NCH ₃

HO

SO ₂ N (CH ₃ ) CH ₂ CH ₂ SSO ₃ Na

N = N ^ /. X

X / v /

OH

CONH

OCH ₂ CH ₂ SSO ₃ Na

CO-NH-CH ₂ -CH ₂ -SSO ₃ Na

N = N - / \

I. J-SO ₂ -NH-CH ₂ -CH ₂ -SSO ₃ Na OH ^

SO ₂ -NH- CH ₂ - CH ₂ - SSO ₃ Na

OH

CH ₃ - C = N

SSO ₃ Na HO NH

orange

blue

H ₂ N

c-N = N- <f Vn

N ^ H ₄ ON

Red

Red

O = S =

CH ₃

CI Disperse Yellow 23
(CI No. 26070)

yellow

yellow

12-carboxyethyl

6.1 l-dioxonaphth [2,3-b] indolizine

yellow

violet

19 Sodium salt of aniline-3,5-di- (sulfonylamino- / 3-ethyl-thiosulfuric acid) diazotized by coupling 2 moles with 1 mol of 1,4-di- (acetoacetylamino) -2-chloro-5-methoxybenzene obtained dye

In the preceding examples, the sodium ' thiosulfate form of thiosulfate dyes used for illustration. Of course, the potassium thiosulfate form can also be used or the ammonium thiosulfate form of these dyes can be used in place of this.

co

NC ₂ H ₄ OCH ₃

yellow

blue

O NH ₂

The C.I. names and numbers of the dyes listed above were taken from "Color Index, "2nd Edition, and its supplements and supplements, published by The Society of Dyers and Taken from Colourists, Yorkshire, England.

543/465

Claims (3)

Patent claims: 1. A process for the production of dyeings on textile materials which consist of natural or regenerated cellulose textile fibers mixed with polyester textile fibers, characterized in that an aqueous dyeing composition consisting essentially of water, a finely divided suspension of disperse dyes, a dispersant and is applied to this textile fabric a solution of water-soluble organic dyes of the phthalocyanine, metal phthalocyanine, pyrazplone, anthraquinone, dioxazine, sulfur, azo, dibenzanthrone or perylene type, the water-soluble organic dyes per molecule at least one of the thiosulfate groups -SSO ₃ Na, -SSO ₃ K or - 'applies SSO ₃ NH ₄ have, dries the fabrics, heated sufficiently to polyester fibers for the fixation of the disperse dye, an aqueous solution of Na ₂ S ₂ _ _4, which may optionally contain a water-soluble inorganic electrolyte , applies and washes with water. 2. The method according to claim 1, characterized in that the fixation of the disperse dyes takes place in hot air from 175 to 235 ° C for 15 seconds to 3 minutes. , 3. The method of claim 1 or 2, characterized in that is used about 0.07 per gram of the water-soluble organic dye to 0.64 g Na ₂ S ₂ _. ₄