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Lithol red preparing method

A Lisol red and liquid caustic technology, applied in the field of pigments, can solve the problems of uneven pigment thickness, pigment separation, mottled, etc., and achieve the effects of uniform color depth, refined pigment particles, and small particle size.

Inactive Publication Date: 2019-02-22
宣城英特颜料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The Lithor scarlet pigment produced in the prior art is prone to flocculation, forming larger pigment aggregates, which slow down in the eddy current movement, causing separation of the pigment, sometimes becoming lighter, and sometimes forming mottling. There will be uneven color and uneven pigment thickness during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of Lisol Scarlet, comprising the following steps:

[0021] (1) Configure the coupling solution, mix and dissolve 3 parts of liquid caustic soda with a mass fraction of 25-28%, 3 parts of ethyl naphthol, and 0.6 part of Swire oil in parts by weight while stirring at 15°C, and dissolve completely. When the solution is transparent, lower the temperature of the solution to 15-20°C, and the temperature can be lowered by adding ice to obtain the coupling solution;

[0022] (2) To prepare diazo solution, add 1.5 parts by weight of liquid caustic soda with a mass fraction of 25%, 3 parts of sulfonic acid, 3 parts of sulfonated acid, and 2 parts of bulenic acid in the bottom water at 25 °C, Turn on stirring and adjust the motor frequency to 25Hz, mix evenly, adjust the temperature of the mixture to -1°C, and add 3 parts of hydrochloric acid with a mass fraction of 24% and 2.4 parts of sodium nitrite to carry out the diazonium reaction when the motor frequenc...

Embodiment 2

[0026] A preparation method of Lisol Scarlet, comprising the following steps:

[0027] (1) Configure the coupling solution, mix and dissolve 5.6 parts of liquid caustic soda with a mass fraction of 28%, 5 parts of ethyl naphthol, and 1.5 parts of sodium alkylbenzene sulfonate by weight parts while stirring at 20 ° C, completely Dissolve and when the solution is transparent, lower the temperature of the solution to 20°C, and lower the temperature by adding ice to obtain a coupling solution;

[0028] (2) To prepare diazo solution, add 2 parts by weight of liquid caustic soda with a mass fraction of 28%, 4 parts of sulfonic acid, 4 parts of sulfonic acid, and 4 parts of bulenic acid in the bottom water at 30 °C, Turn on stirring and adjust the motor frequency to 25Hz, mix evenly, adjust the temperature of the mixture to 0°C, and add 4 parts of hydrochloric acid with a mass fraction of 26% and 2.8 parts of sodium nitrite to carry out the diazonium reaction when the motor frequency...

Embodiment 3

[0032] A preparation method of Lisol Scarlet, comprising the following steps:

[0033] (1) Configure the coupling solution, mix and dissolve 5 parts of liquid caustic soda with a mass fraction of 26%, 4 parts of ethyl naphthol, and 1 part of stearic acid in parts by weight while stirring at 18°C, and dissolve completely. When it is transparent, lower the temperature of the solution to 18°C, and lower the temperature by adding ice to obtain a coupling solution;

[0034] (2) To prepare the diazo solution, add 2.5 parts by weight of liquid caustic soda with a mass fraction of 26%, 3.5 parts of tunic acid, 3.5 parts of sulfonated acid, and 3 parts of bulenic acid in the bottom water at 26 °C, Turn on stirring and adjust the motor frequency to 25Hz, mix evenly, adjust the temperature of the mixture to -0.5°C, and add 5 parts of hydrochloric acid with a mass fraction of 25% and 3.8 parts of sodium nitrite to carry out diazonium reaction when the motor frequency is about 50 Hz , get...

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PUM

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Abstract

The invention provides a lithol red preparing method and relates to the technical field of pigments. The lithol red preparing method comprises the following steps of (1) preparing a coupling fluid bymixing and dissolving, by weight part, 3-5.6 parts of liquid alkali, 3-5 parts of ethyl naphthol and 0.6-1.5 parts of anionic surfactant; (2) preparing a diazonium solution by uniformly mixing, by weight part, 3-4.5 parts of liquid alkali, 3-4 parts of tobias acid, 3-4 parts of sulfonated tobias acid and 2-4 parts of cold distributing acid and then adding in 0.6-3 parts of hydrochloric acid and 1.5-2.8 parts of sodium nitrite for diazo reaction; (3) mixing, by weight part, 2-4 parts of liquid alkali and 2-3 parts of rosin to obtain a rosin solution; (4), mixing the coupling fluid and the diazonium solution for coupling reaction, then adding in the rosin solution and saturated barium chloride solution, adjusting the pH to 7.5-8.0 and adding in aluminum chloride to obtain lithol red. The prepared lithol red can avoid flocculation in a system when applied to ink and paint, and is free from separation, uniform in color darkness, fined in pigment particles and small in grain size.

Description

technical field [0001] The invention relates to the technical field of pigments, in particular to a preparation method of Lisol scarlet. Background technique [0002] The pigment used in the ink refers to the raw material that makes the ink color. It is insoluble in water and has excellent alcohol resistance. Pigments are colored organic or inorganic colored compounds that are insoluble in water and general organic solvents, but not all colored substances can be used as organic pigments. To become pigments, colored substances must have the following properties: [0003] 1) The color is bright, which can give the coloring object (or substrate) a firm color; [0004] 2) Insoluble in water, organic solvents or application media; [0005] 3) It is easy to disperse evenly in the application, and is not affected by the physical and chemical effects of the application medium during the entire dispersion process, and retains their own inherent crystal structure; [0006] 4) Sunsh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B29/15C09B29/03C09D11/037C09D7/41
CPCC09B29/103C09B29/0014C09D7/41C09D11/037
Inventor 方晖李良武
Owner 宣城英特颜料有限公司
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