SU1031995A1 - Method for preparing pigment form of bright orange vat dye - Google Patents

Abstract

The method of producing a pigment, “OPMJ DYE OF CUFFIC BRIGHT-ORACCHE-4 VOGO” by treating trans-isomer paste with naphthoylbysbeybimidaeol with a surface of an active substance and diluting the reaction mixture with water until a homogeneous suspension is obtained. that, in order to increase the yield of the target product and simplify the technological process, as a trans-isomer paste, naphthoylenbisbenzimidazole uses its spirto-alkaline paste, and the reaction mass is diluted to pH 5 before dilution 5-6.0.

Description

: l

about U1

This invention relates to a process for the production of final forms of vat dyes, in particular, to a method for the polynomial pigment form of a vat bright orange dye used for dyeing polymeric materials.

A known method of obtaining the pigment form of the dye of the cubic orang orang by treating the water paste of the trans-isomer with naphthoylenbisbenzimidazole with aliphatic carboxylic acid at a ratio of 1.1 to 3.9: 1, respectively, to the base of the dye, respectively, and with the surface-active substance with aliphatic amine or rosine ester, followed by subsequent addition of a dye to the base of the dye, followed by the aliphatic amine or ester resin, followed by the dye base and 1.1 g: water until a homogeneous suspension is obtained and drying ll.

The disadvantage of this method is the low yield of the target product () and the complexity of the technological process, due to its multi-stage, duration, and the use of a corrosion-capable means - aliphatic carboxylic acid.

The purpose of the invention is to increase the yield of the target product and simplify the process.

This goal is achieved in that according to the method of obtaining the pigment form of the dye vat bright orange by treating the trans isomer paste with naphthoylenbisbenzimidazole with a surfactant and diluting the reaction mixture with water until a homogeneous suspension and drying, as a trans isomer with naphthoylen bisbenzimidaras, In the izemaz izd, Idze-izidzeyzaras izd. and the reaction mass before dilution is treated with sulfuric acid to pH 5.5-6.0.

Example. 500 g (250 g in terms of 100% dye) of the potassium salt of the trans-isomer naphthoylenbisbenzimidazole in the form of an alcohol-alkaline paste, 12.5 g (100%) of potassium abietate are added to the mixer and mixed for 1 hour and then decomposed potassium salt by diluting the mass with water while precipitating the surfactant on the surface of the particles by acidification to pH 5.5–6, O sulfuric 20% acid, maintaining the temperature not higher. . Next, the suspension is filtered, washed to the absence of sulphate ions and dried at 80 ° С. A bottom dye is readily distributed in the plashifiers in pigment form, coloring in

intense orange color artificial fibers, plastics, natural and artificial leather. The mother liquor and wastewater regenerate and release high-quality fertilizer, potassium sulphate.

Example 2. 620 g (250 g in terms of 100% dye) of the trans-isomer of the naphthoylenbisbenzimidazole clea salt in the form of an alcohol-alkaline paste 35.7 g of a 10% aqueous solution of potassium salt of rosin silicone ether and mixed are loaded into a mixer. 30 minutes, diluted with May-su with water and acidified to pH with sulfuric acid, the suspension is filtered, washed until no sulfate ions, and dried at. A vat dye in pigment form is obtained, dyeing polymeric materials in a bright orange color with a yellowish tinge.

Example 3. In the date mixer, 900 g of the trans-isomer of the potassium salt (naphthoylenbisbenzimidazole in the form of an alcohol-alkaline paste (300 g in terms of 100% dye)), 1.5 g of the acidic abietic acid sodium salt (in ethlate) are loaded sodium and stirred for 30 minutes, then diluted mass with water. and acidified with sulfuric acid to slightly acidic reaction, filtered, washed and dried at 80 ° C. The resulting cubic dye in pigment form colors the ABS plastic in red with a yellow tinge.

Example 4. A vat dye in a pigment form is prepared under the conditions of Example 1 with the only difference that potassium silicate is used as the surface-active substance in an amount of 3% by weight of the dry dye. The resulting dye in pigment form paints PVC film and artificial fibers in an intense bright orange color.

A comparative characteristic of the proposed and known methods is given in the table.

As can be seen from the table, the method, in agreement, allows 3-4 times to intensify the technological process, significantly simplify it by reducing the number of stages, as well as increase the product yield by 7-10% and improve its coloristic properties.

Total output of the product, I

The duration of the process, h

Covering capacity / m / g

Color intensity,%

Gloss,%

but

UKR {8HISSTY, G / M

90

97

1.5-2

O .2

8.2 10

105

39

12.2

Claims (1)

METHOD FOR PRODUCING PIGMENT FORM OF CUBE BRIGHT-ORANGE COLOR DYE by treating the trans-isomer of naphthoylene bisbenzimideaol paste with a surfactant and diluting the reaction mass with water until a homogeneous suspension and drying are obtained, increasing the temperature yield of the target product and simplification of the technological process, as the paste of the trans-isomer of naphthylene bisbenzimideaol, its alcohol-alkaline paste is used, the reaction mass is treated with sulfuric acid to pH 5.5-6.0 before dilution. In <l> I