Concentrate of printing dye and method for its preparing

FIELD: printing dyes.

SUBSTANCE: invention relates to concentrate of printing dyes and a method for its preparing. Invention describes dye concentrate for offset printing in form non-sticky granules covered by envelope and/or non-sticky granules without envelope with the pigment content in its 45-65 wt.-%. Envelope-cover consists of powder-like solid materials, wax or liquid materials, for example, oil. Also, invention describes a method for preparing indicated concentrate that involves grinding dye concentrate for offset printing and its covering by envelope wherein covering by envelope is carried out by direct applying powder-like solid material on the printing dye concentrate and wherein powder-like solid materials are combined firstly with liquid carrier followed by its evaporation, or solid envelope is prepared by applying melted material useful for coating. Invention provides decreasing viscosity and stickiness of the printing dye concentrate and allows simple transporting and simple mixing with additional components.

EFFECT: improved and valuable properties of concentrate.

9 cl, 12 ex

 

The invention relates to a concentrate of printing inks and method of its manufacture.

Printing inks are usually made by connection of source materials - pigments, binders, additives, liquids and subsequent dispersion. The dispersion method is used for grinding the pigment agglomerates to obtain pigment particles of the desired value. Thus to achieve the required quality of printing ink, such as, for example, sufficient saturation and good quality print.

For more rational and cost-effective manufacture of printing inks in the above-described method also typically includes the intermediate stage. This intermediate stage is to obtain a concentrate of printing ink, which is different from conventional printing inks for the fact that it is significantly higher pigment concentration. The proportion of binder, and a liquid fraction thereby naturally less. Concentrates printing inks are used for manufacture of finished paints, and to enhance the concentration of dyes printing inks of the same hue, and nansirovaniya printing inks.

A binder, and a liquid is added to the concentrate printing inks for dilution, and is made by mixing the final printing ink. The use of dispersion on the stage dilution is not more required since the printing ink concentrate with the introduction of procedures dispersion is produced from source materials of pigment, binder, additives and liquids.

Concentrates printing inks therefore differ significantly from the preparation of the pigment in the sense that concentrate printing ink pigments are already available in dispersed form.

Concentrates printing inks are usually made so that there is a dispersion of solid materials such as pigments and solid additives in a binder substances and liquids by dispersing devices such as devices with three rolling rollers, mixers, extruders or ball mills mixers with multi-stage cycles or doprocessing way as described in the European patent 0807670 A1.

In this way, obtained viscous and highly viscous with adhesion concentrates printing inks.

Used solid materials are pigments, such as phthalocyanine (Phthalocyanin CI 15), ruby pigment (Rubinpigment CI 57:1), yellow diaryl (Diarylgelb CI 12/13), as well as pigments decorative paints and other non-colored solid materials, which are often also known as fillers, such as chalk, kaolin, equivalent (Butylhydroxytoluol) or auxiliary means for dispersion. They are EMERAUDE in the form of a powder or granulate. Used binder can be a varnish for printing inks, which are made by vyvarki resins printing inks, oils, printing inks and alkido. As binders are also used alcidi, such as Alcide linseed oil, Alcide soybean oil. As the liquid components are special mineral oil for printing inks with boiling between 230-370 degrees, such as pantozol (Printosol C800), and vegetable oils such as linseed oil, soybean oil.

Get another way concentrate form of printing ink is Flashpaste. They are also viscous and highly viscous and has adhesiveness (stickiness).

In Flashpaste pigment is present in crushed friction condition required for use in printing ink, and the need for dispersion or grinding is missing.

These concentrates printing ink after fabrication loaded in the transport packaging, such as cans, buckets, barrels, tin containers or industrial packaging. They are used for storage, transportation and intake of concentrate printing ink.

For the manufacture of the finished printing ink one or more of printing ink concentrates are collected, weighed and mixed with additives, binders or liquid component is having such as oil.

The weighting is usually by manually fence concentrate printing inks, for example, with the help of a spatula and laying in the weight of the container. Another way is to use the so-called metering stations, which concentrates printing inks are in storage tanks, for example in tin containers or barrels, and delivered by means of pumps or hydraulic presses and through metering valves are dosed by volume or by weight. Such automatic devices are widely spread in the trade.

The weighted components are then mixed in the mixers, such as dissolvers, mixers, paddle mixers, or other mixing units, with the addition of excipients, binders and oils to the finished paint. The mixing process is used for the homogenization of the product.

The dispersion of pigment here is no longer required, as it has already been carried out in the manufacture of printing ink concentrate.

The problem is the high viscosity and tackiness of the printing ink concentrate, especially depending on the applied amount of pigment. The higher the proportion of pigment, i.e., the fraction of solid-phase part of the concentrate, the more viscous is the product. Accordingly difficult handling, i.e. fence manually or POS of the face transfer printing ink concentrate with a pump.

Fence manually, is often simply impossible. Fence product can be carried out only with considerable technical expenditure, for example by means of presses, high pressure, often heated product.

While shipping and dispensing liquid printing inks can be implemented with relatively low cost, in the case of pasty concentrates printing inks need to use expensive vacuum pumps such as rotary pumps or pneumatic piston pumps.

The number of different colors of paint required for the manufacture of special paints, specifies that for one automatic mixers typically require 20 to 60 units pumps, which represents a significant cost.

When greater viscosity concentrates printing inks must be applied hydraulic presses for reliable delivery of the product. This technique high pressure increases many times the investment costs. Fence manually, such concentrates for offset printing, as a rule, is simply impossible.

The task of the invention is to overcome the described disadvantages of the methods known from the prior art, and at the same time to obtain a printing ink concentrate, allowing easy transportation and easy CME is ivanie with additional components.

This problem is solved by creating a concentrate of printing ink in the form of a coated non-adhesive (non-sticky) and/or coated and non-adhesive (non-sticky) granules.

To achieve this goal came from in order to use the high viscosity of the printing ink concentrates and to consider and use them as a rigid body in spite of their properties of high viscosity and adhesive properties. This requires a sticky, highly viscous initial printing ink concentrate to convert to a new non-adhesive material.

Reduce the stickiness of the concentrate is due to the increase of the proportion of solid material concentrate. The fluidity and deformability concentrate printing ink is reduced due to a combination of a high proportion of pigment and a low share of binders. The concentrates and any resulting granules can still have a little residual stickiness, which is reduced or eliminated by subsequent coating or the conclusion of pellets in the shell. The proportion of pigment in the printing ink concentrate is in the granules according to the invention typically 45-65 percent. The concentration of the pigment thus significantly higher than in conventional printing ink concentrates.

Form of granules ideally spherical. They can, however, also have other symmetric and asymmetric Faure is s.

The granule size ideally suited to the next dosing process. The specific density of the printing ink concentrate is typically 0.9 to 2.0 grams per cubic centimeter.

When maximum weighing accuracy +/-1 gram pellet has a volume of approximately 0.5 to 1.0 cubic centimeters. Depending on the applied method, the volume can also be selected individually different.

Concentrate printing inks in accordance with the invention in the form of a coated non-adhesive and/or coated non-adhesive pellet has a number of significant advantages.

So, it can be treated as bulk cargo. Each pellet can thus get individually and dosed count. Fence manually concentrates for offset printing now not only possible, but can be carried out particularly simply.

Concentrate printing inks in accordance with the invention thus allows to easily dosage and thereby permits the use of standard dispensers for solid materials, so that it becomes possible to automate the weighing and dosing.

Pellets as a solid material can be easily transported and thereby easily partapanats. As a solid material, they can easily packaged and transported. Because the granules which have no stickiness, excluded bonding and sintering of particles.

In the case of printing ink concentrates, known from the prior art, there is a strong pollution of all incoming into contact with the product parts, which leads to high costs of treatment, as well as to the problem of liberation from the remnants of the product and packaging. In contrast, it is possible to prevent contamination by the emission of paint on surfaces that make contact with the printing ink concentrates. Contamination of parts that are in contact with the product, minimally, so that cleanup costs are very small. When the dump is not a residue, and thus there is no debris that reasons of environmental protection should be seen as a particular advantage. In addition, there is no loss of material and may use simpler packages.

Covered with granules or pellets after weighing are mixed in a common mixing units. To them in particular are dissolvers, mixers, vibromassage, tumbler mixer. Subsequent dispersion or grinding is not required.

A particular coating material as an integral part of the concentrate printing ink becomes part made out of printing ink.

The coating material, thus, need not be removed before further treatment is processing.

Next is the method of manufacturing of printing ink with the concentration of the ink in accordance with the invention.

Thus, it can be made wahrane paint (UV-Druckfarben), inks for flexographic printing PA water-based, toluene inks for gravure printing, printing ink, solvent containing, for example, on the basis of ethanol and ethyl acetate, nitrocellulose printing ink, ink for screen printing, paints or inks for pad printing.

In one preferred form of the invention presents a concentrate of printing ink, in which the coating consists of powdered solid materials, wax and liquid materials. When this liquid material may be oil.

The material of the coating can thus be adapted to the respective purpose of application.

As the coating material can be applied to solid and liquid materials that are compatible with the printing ink. Suitable solid materials for example is a powdered materials, such as chalk, kaolin, paraffin wax, PE wax (PE-Wachse), Fischer-Tropsch-Wachse, or talc. Powders have an average particle size of the grains maximum 25 μm, in the ideal case, the grain size of the grains is less than 5 μm. The average size of grains more than 25 μm also mouthparts, however, this may cause problems when using the final product - printing inks, such as, for example, to the formation of structures in the matrix.

By coating the surface of the granules does not have any adhesive properties.

In one other preferred form of the invention the coating of printing ink concentrate is a hard shell. This fully hard shell may be, for example, the shell of wax.

In another particularly preferred form of execution of the invention, the printing ink concentrate is a concentrate of inks for offset printing.

Another object of the invention is a method of manufacturing a concentrate of printing ink, which is characterized in that the printing ink concentrate homogenized and covered with a shell. Manufacturing of pellets can occur separately, but should be directly associated with the manufacture of printing ink concentrate.

For granulation can be used known methods such as those used in the food or feed production.

This may be either the output of concentrate from the air nozzle or valve-spout, or concentrate production of printing ink in the matrix with subsequent grinding. In the extreme case is made strip is of oncentrate printing ink, which is cut to length only at the next processing stage dosing.

In one preferred form of the process according to the invention the coating is carried out by direct application of the powdered solid material on the printing ink concentrate.

Applying powdered material may, for example, occur by direct wetting of the granules or by rolling of the pellets in the appropriate applied covering material.

In one other preferred forms of implementation of the method according to the invention the powder coating materials is carried out indirectly via a carrier liquid, which subsequently evaporates.

As carriers are liquids and solvents, in which the covering material may be in the form of a suspension or dissolved. Application may be by spraying or immersion in a suspension or solution.

The subsequent drying of the carrier fluid or solution is removed, and remains coated granule.

In one other preferred forms of implementation of the method according to the invention solid coated surface is carried out by applying a molten material or by applying the dissolved suitable as membrane material, if e is ω, the solvent is subsequently evaporated.

For example, the shell of the wax can be obtained by melting the wax and subsequent wetting of the surface of the printing ink concentrate. As wax is suitable, for example, paraffin Veski, PE-wax, and Fischer-Tropsch wax.

Materials suitable for membrane concentrate printing ink may be, for example, fats, such as Palmin or gelatin.

The material suitable for the shell, can be dissolved in the carrier fluid, which is removed by evaporation after application to bare granules printing inks. Because this process can be repeated, the thickness of the shell can be arbitrarily increased.

Thanks to the use of a high proportion of solids of pigment in the printing ink concentrate in more than 50 percent of residual stickiness of the product can be reduced to such an extent that the protective sheath in the form of the coating is no longer necessary.

Thus have further advantages, such as falling short of the necessary coating and the need for additional components to cover.

The invention is explained in more detail with examples of manufacturing coated and not coated granules.

Example 1

In a laboratory extruder manufacturing printing ink concentrate, made of 45% of the mass of yellow pigment (Pigment ellow CI 13) and 55% mass binder material for offset printing Grinding base (Grinding Base 100S, or otherwise UROSET 100SE - polymer Alcide 65-75%, esterified rosin 10-20%, hydrosulfurous kerosene (oil) 5-10%, light distillate (petroleum) 5-10%) firms later (Lawter), and the resulting printing ink concentrate was removed from the extruder in the form of a strip. After cooling to room temperature, the product had only a small residual stickiness and had no significant deformiruem. spine.

Concentrate printing ink into fragments were mechanically granules weighing 1 gram per share.

Then the pellets were dipped into molten wax paste, which consisted of 37.5% by weight PE wax with melting point of 115 degrees Celsius and 62.5% by weight of linseed oil. Then the granules were passed through a sieve and cool.

Thus obtained coated granules practically have no adhesiveness (stickiness).

Example 2

Concentrate printing ink produced in accordance with example 1, were placed in a heated container. When the temperature of the product to about 70 degrees Celsius concentrate printing ink was merged with gear pump through a die with a hole diameter of 4 mm, the Obtained strip paint thickness 4 mm cut into pellets with a length of 10 mm and then valavanis in talcum powder, when it was created the shell of the powder material. Excessive fine powder is the very through a sieve.

Thus obtained coated (shell) granules practically not find any stickiness.

Example 3

Were made not covered (shell) granules of printing ink in accordance with example 2, which was immersed in an aqueous wax emulsion is then passed through a sieve and dried in a stream of warm air.

Thus obtained coated (shell) granules practically not find any stickiness.

Example 4

Were made not covered (shell) granules of printing ink in accordance with example 2, which was immersed in a silicone emulsion was then passed through a sieve and dried in a stream of warm air.

Thus obtained coated (shell) granules practically not find any stickiness.

Example 5

The container was heated standard flush-paste (Standard-Flushpaste Pigment Yellow C12). When reaching 60 degrees Celsius flush-pasta with pump have merged through a die with a hole diameter of 4 mm, the Obtained strip concentrate printing inks cut into pellets with a length of 10 mm is These latter were covered (shell) in accordance with example 1.

Thus obtained coated (shell) granules virtually no detect no longer sticky, but still less deformable.

Example 6

Izgotovlivala is not covered (shell) granules in accordance with example 5. They were covered in accordance with example 2.

Thus obtained coated (shell) granules practically not find any more stickiness.

Example 7

Were made not covered (shell) granules in accordance with example 5. They were covered (shell) in accordance with example 3.

Thus obtained coated (shell) granules practically not find any more stickiness.

Example 8

Were made not covered with granules in accordance with example 5. They were covered in accordance with example 4.

Thus obtained coated granules practically not find any more stickiness.

Example 9

Concentrate printing inks in accordance with example 1 using the clutch release cylinder was connected to the matrix. The resulting strip of printing ink concentrate was obrushivalas in podduvalom in the air with talcum powder, and a thin layer is deposited on the surface of the strip.

Coated strip was tied or was blown away in the packaging. When weighing the obtained fine printing inks band was just cut off, or was granulated.

Covered with a strip of printing ink concentrate almost does not detect any more stickiness.

Example 10

Concentrate printing inks in accordance with example 1 was fed to the valve dispenser. P and each step of dosing were thrown out part of the printing ink concentrate.

Portsionirovaniem thus pellets of concentrate printing ink from falling into the vortex of the shroud, which was located at the bottom of the air nozzle so that the granules were maintained on the fly together with enveloping them powder separating the powder of talc.

Thus obtained coated granules practically not find any more stickiness.

Example 11

Concentrate printing ink produced in accordance with example 1, was directed at the outlet of the extruder in the pipe. After 25 holes located on the sides of the pipe, the concentrate out of the partial bands at about 100 degrees Celsius outside. Part of the strips were immersed in cooling the ribbon next to each other and taken away. The tape was covered with talcum powder to prevent sticking concentrate, equally for the same were covered with powder and stripes concentrate.

After the concentrate was cooled to 25 degrees Celsius, strip concentrate were cut into separate pieces of 20 mm in a rotary cutting device. Excess talcum powder was separated in swinging the crash.

Thus obtained granules are practically not find any more stickiness.

Example 12

In a laboratory extruder manufacturing printing ink concentrate, made of 63% by weight goal is wow pigment (C.I. 15:3), for example Lutetia Cyanin J 505 Micropeari, and 37% by weight of a binder material for offset printing Grinding base (Grinding Base 100S) firm later, and obtained from extruder printing ink concentrate was withdrawn in the form of a strip.

After cooling to room temperature the product was not found any more sticky and was cut into pellets with a volume of 1 cubic see

1. Concentrate inks for offset printing in the form of a coated non-adhesive and/or uncovered by the sheath sticky granules, characterized in that the pigment content in it is within 45-65% by mass.

2. Concentrate inks for offset printing according to claim 1, characterized in that the sheath-floor consists of a powdered solid material, wax or liquid materials.

3. Concentrate inks for offset printing according to claim 2, characterized in that the liquid material is oil.

4. Concentrate inks for offset printing according to claim 1, characterized in that the sheath-floor is solid shell.

5. A method of obtaining a concentrate inks for offset printing according to claims 1 to 4, characterized in that the concentrate inks for offset printing homogenized and covered with a shell.

6. The method according to claim 5, characterized in that the coated surface is the direct application of a powdered solid material on the printing ink concentrate.

7. JV the property according to claim 6, wherein the powdered solid material is first connected with a liquid carrier, which then evaporates.

8. The method according to claim 5, characterized in that the shell is solid and is obtained by applying molten material.

9. The method according to claim 5, characterized in that the shell is solid and is obtained by applying the dissolved suitable for encapsulating material, and the solvent is subsequently evaporated.



 

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The invention relates to the field of aniline-dye industry, in particular to a method for basic dyes, xanthene, methine, polymethine, di - and triarylmethane number in the liquid discharge form

FIELD: dyes and pigments.

SUBSTANCE: invention relates to a method for preparing an aqueous dispersion wherein water-insoluble dye is dispersed stable in an aqueous medium containing water and that is used as ink, respectively. Invention describes an aqueous dispersion comprising particles including water-insoluble dye and a polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group. Particles are dispersed in water-containing medium and dispersion shows intensity of light scattering 30000 imp/s, not above, when it comprises sufficient amount of particles and to provides value of absorption peak with respect to visible light = 1 and particles give the same color as a water-insoluble dye in crystalline state. Also, invention relates to a method for its preparing involving the following stages: (1) preparing a solution containing water-insoluble dye and a dispersing agent dissolved in aprotonic water-soluble organic solvent in the presence of alkali; (2) mixing the solution with water and preparing the dispersion containing particles comprising water-insoluble dye and dispersing agent. Also, invention describes particles comprising water-insoluble dye and polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group provides the same color as water-insoluble dye in crystalline state and having colored moiety with water-insoluble dye and non-colored moiety wherein non-colored moiety exists in the round region with radius 40 nm and wherein its center is the required point in a particle. Also, invention relates to a method for their preparing that involves the following stages: (A) preparing an aqueous dispersion; (B) formation of aggregate consisting of dispersion particles and isolation of aggregate from the dispersion; (C) conferring to particles in aggregate the capacity for repeated dispersing and wherein the stage (B) involves sub-stage of addition of acid to the dispersion to form aggregate, and the stage (C) involves sub-stage of treatment of aggregate with alkali to confer particle in aggregate the capacity for repeated dispersing, and ink containing particles described above. Proposed ink provides printing with excellent quality by color and clearness that are resistant to water and light.

EFFECT: improved preparing method, improved and valuable properties of dispersion and ink.

19 cl, 16 tbl, 1 dwg, 24 ex

FIELD: dyes and pigments.

SUBSTANCE: invention relates to a method for preparing an aqueous dispersion wherein water-insoluble dye is dispersed stable in an aqueous medium containing water and that is used as ink, respectively. Invention describes an aqueous dispersion comprising particles including water-insoluble dye and a polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group. Particles are dispersed in water-containing medium and dispersion shows intensity of light scattering 30000 imp/s, not above, when it comprises sufficient amount of particles and to provides value of absorption peak with respect to visible light = 1 and particles give the same color as a water-insoluble dye in crystalline state. Also, invention relates to a method for its preparing involving the following stages: (1) preparing a solution containing water-insoluble dye and a dispersing agent dissolved in aprotonic water-soluble organic solvent in the presence of alkali; (2) mixing the solution with water and preparing the dispersion containing particles comprising water-insoluble dye and dispersing agent. Also, invention describes particles comprising water-insoluble dye and polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group provides the same color as water-insoluble dye in crystalline state and having colored moiety with water-insoluble dye and non-colored moiety wherein non-colored moiety exists in the round region with radius 40 nm and wherein its center is the required point in a particle. Also, invention relates to a method for their preparing that involves the following stages: (A) preparing an aqueous dispersion; (B) formation of aggregate consisting of dispersion particles and isolation of aggregate from the dispersion; (C) conferring to particles in aggregate the capacity for repeated dispersing and wherein the stage (B) involves sub-stage of addition of acid to the dispersion to form aggregate, and the stage (C) involves sub-stage of treatment of aggregate with alkali to confer particle in aggregate the capacity for repeated dispersing, and ink containing particles described above. Proposed ink provides printing with excellent quality by color and clearness that are resistant to water and light.

EFFECT: improved preparing method, improved and valuable properties of dispersion and ink.

19 cl, 16 tbl, 1 dwg, 24 ex

FIELD: dyes and pigments.

SUBSTANCE: invention relates to a method for preparing an aqueous dispersion wherein water-insoluble dye is dispersed stable in an aqueous medium containing water and that is used as ink, respectively. Invention describes an aqueous dispersion comprising particles including water-insoluble dye and a polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group. Particles are dispersed in water-containing medium and dispersion shows intensity of light scattering 30000 imp/s, not above, when it comprises sufficient amount of particles and to provides value of absorption peak with respect to visible light = 1 and particles give the same color as a water-insoluble dye in crystalline state. Also, invention relates to a method for its preparing involving the following stages: (1) preparing a solution containing water-insoluble dye and a dispersing agent dissolved in aprotonic water-soluble organic solvent in the presence of alkali; (2) mixing the solution with water and preparing the dispersion containing particles comprising water-insoluble dye and dispersing agent. Also, invention describes particles comprising water-insoluble dye and polymeric compound or surface-active substance wherein its hydrophilic moiety is formed by at least one group taken among the group consisting of carboxyl, sulfonic, phosphorus, hydroxyl and alkylene oxide group provides the same color as water-insoluble dye in crystalline state and having colored moiety with water-insoluble dye and non-colored moiety wherein non-colored moiety exists in the round region with radius 40 nm and wherein its center is the required point in a particle. Also, invention relates to a method for their preparing that involves the following stages: (A) preparing an aqueous dispersion; (B) formation of aggregate consisting of dispersion particles and isolation of aggregate from the dispersion; (C) conferring to particles in aggregate the capacity for repeated dispersing and wherein the stage (B) involves sub-stage of addition of acid to the dispersion to form aggregate, and the stage (C) involves sub-stage of treatment of aggregate with alkali to confer particle in aggregate the capacity for repeated dispersing, and ink containing particles described above. Proposed ink provides printing with excellent quality by color and clearness that are resistant to water and light.

EFFECT: improved preparing method, improved and valuable properties of dispersion and ink.

19 cl, 16 tbl, 1 dwg, 24 ex

FIELD: organic chemistry, dyes.

SUBSTANCE: invention relates to the dispersed dyes comprising N-methylphthalimide-diazo-component and a coupling aniline component. Invention proposes a dye of the formula (1): wherein R means hydrogen or bromine atom; R1 means hydrogen atom, methyl or -NHCO-(C1-C4)-alkyl; R2 means (C1-C4)-alkyl substituted with (C1-C4)-alkoxy-group; R3 has any value among R2 being independently of R2. Invention proposes a mixture of dyes comprising at least one azo dye of the formula (1) and at least one azo dye of the formula (4): wherein R1 means hydrogen atom, methyl or -NHCO-(C1-C4)-alkyl; R2 means (C1-C4)-alkyl wherein is possible but not obligatory that C2-alkyl chain or comprising more carbon atoms is broken with oxygen atom, and R has any value of R being independently of R2. Also, invention proposes a method for coloring or printing on semisynthetic or synthetic hydrophobic fibrous materials wherein dye of the formula (1) or mixture of dyes of formulae (1) and (4) is applied on such materials or added in them. Invention proposes dispersed dyes providing coloring characterizing by high strength degree in laundry and against sweat.

EFFECT: valuable properties of dyes.

7 cl, 2 tbl, 3 ex

Active monoazo dyes // 2287542

FIELD: dyes.

SUBSTANCE: invention relates to active dyes designated for staining or printing of hydroxy- or nitrogen-containing organic substrates. Invention describes novel monoazo dyes comprising sulfatoethylsulfonyl groups of the formula (1) given in the invention description, mixtures of dyes and their using for staining or printing of hydroxy- or nitrogen-containing organic substrates and in dyes for jet printing. Proposed dyes provide the enhanced light resistance of painting and mixtures of dyes comprising the proposed dye possess the enhanced dyeing capacity as compared with individual dyes.

EFFECT: improved and valuable properties of dyes.

8 cl, 3 tbl, 45 ex

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