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Phthalocyanine pigment color paste, and preparation method and application thereof

A technology for phthalocyanine pigments and color pastes, applied in the direction of pigment pastes, etc., can solve the problems that are difficult to meet the storage stability, moisture retention, and environmental protection performance requirements of the automatic coloring system of paints, and achieve good storage stability and moisture retention, Enhance the effect of dispersion and stability

Active Publication Date: 2020-09-18
常熟世名化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The color paste prepared by the existing technology is difficult to meet the demanding performance requirements of the paint automatic color matching system in terms of storage stability, moisture retention, environmental protection, etc.

Method used

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  • Phthalocyanine pigment color paste, and preparation method and application thereof
  • Phthalocyanine pigment color paste, and preparation method and application thereof
  • Phthalocyanine pigment color paste, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The surface modified phthalocyanine pigment is prepared by the following steps:

[0032] S1: Add 1 part by mass of phthalocyanine blue 15:3 pigment to 6 parts by mass of chlorosulfonic acid and 2.5 parts by mass of concentrated sulfuric acid under stirring conditions, and stir for 45 minutes; add 0.8 parts by mass of chlorosulfuric acid Sulfoxide, slowly warming up to 90°C, reacting for 6 hours, cooling down, filtering, washing, and drying to obtain sulfonylated phthalocyanine blue 15:3 pigment;

[0033] S2: Add the sulfonylated phthalocyanine blue 15:3 pigment prepared in step S1 to 8 parts of water by mass, use sodium hydroxide pH adjuster to control the pH value to 9.0, and add 0.8 parts of ethylene glycol Amine, keep the temperature at 120°C, react for 7h, cool down, filter, wash, and dry to obtain the phthalocyanine blue 15:3 pigment of aminolysis;

[0034] S3: Add chloroacetic acid with a mass of 0.8 to 10 parts of absolute ethanol for dissolution, use a sodium h...

Embodiment 2

[0036] The surface modified phthalocyanine pigment is prepared by the following steps:

[0037] S1: Add 1 part by mass of phthalocyanine green pigment to 5 parts by mass of chlorosulfonic acid and 2 parts by mass of concentrated sulfuric acid under stirring conditions, and stir for 30 minutes; add 0.5 part by mass of thionyl chloride, Slowly raise the temperature to 120°C, react for 4 hours, cool down, filter, wash, and dry to obtain sulfonylated phthalocyanine green pigment;

[0038]S2: Add the sulfonylated phthalocyanine green pigment prepared in step S1 to 5 parts of water by mass, control the pH value to 7.0 with a potassium hydroxide pH regulator, and add 0.5 parts of dimethyl propane Amine, keep the temperature at 150°C, react for 4 hours, cool down, filter, wash, and dry to obtain the phthalocyanine green pigment of aminolysis;

[0039] S3: Add 0.5 parts of 3-chloropropionic acid to 10 parts of absolute ethanol for dissolving, control the pH value to 7.0 with potassium...

Embodiment 3

[0041] The surface modified phthalocyanine pigment is prepared by the following steps:

[0042] S1: Add 1 part by mass of phthalocyanine blue 15:1 pigment to 7 parts by mass of chlorosulfonic acid and 3 parts by mass of concentrated sulfuric acid under stirring conditions, and stir for 60 minutes; add 1 part by mass of chlorinated Sulfoxide, slowly warming up to 70°C, reacting for 8 hours, cooling down, filtering, washing, and drying to obtain sulfonylated phthalocyanine blue 15:1 pigment;

[0043] S2: The sulfonylated phthalocyanine blue 15:1 pigment prepared in step S1 is added to 10 parts of water by mass, and the pH value is controlled by a sodium bicarbonate pH regulator to 10.0, and 1 part by mass of 1, 4-Butanediamine, keep the temperature at 90°C, react for 10 hours, cool down, filter, wash, and dry to obtain the phthalocyanine blue 15:1 pigment of aminolysis;

[0044] S3: 1 part of 4-chlorobutyric acid is dissolved in 10 parts of absolute ethanol, and the pH value is...

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Abstract

The invention discloses phthalocyanine pigment color paste, and a preparation method and application thereof. The phthalocyanine pigment color paste is obtained by uniformly mixing a surfactant, a humectant, a mildew-proof bactericide and water, adjusting a pH value, uniformly mixing the obtained mixture with a surface modified phthalocyanine pigment, and performing filtering. According to the phthalocyanine pigment color paste, and the preparation method and application thereof in the invention, phthalocyanine pigment is subjected to sulfonylation and amination and then reacts with chlorinated alkyl acid; hydrophilic carboxyl groups are arranged at the tail end of the surface modified phthalocyanine pigment, so the dispersity and the stability of the color paste in water are enhanced; a surfactant with a special structure is used, so the color paste has low critical micelle concentration, high surface activity, good hydrophilicity, wettability and low foaming property; polyhydric alcohol with a boiling point higher than 250 DEG C and ether of the polyhydric alcohol or a polymer of the polyhydric alcohol is used as a humectant, so a VOC content requirement is met, and the moistureretention of the color paste is guaranteed; and the color paste is suitable for an automatic color mixing system of water-based paint and has good storage stability and moisture retention performance.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a phthalocyanine pigment paste and its preparation method and application. Background technique [0002] Traditional paint toning requires professional color toning personnel, limited by the professional level of color toning personnel, there are problems such as large batch color difference, large amount of waste, and the cost and efficiency of color toning are difficult to meet customer needs. The automatic color mixing system is a new color mixing method that uses the color matching software to control the color mixing machine to add a certain mass / volume of color paste to the base paint, which solves many disadvantages of the traditional color mixing method. Among them, the performance of the color paste used in the automatic color matching system is very important to the color toning effect. The color paste is required to have excellent stability, high moi...

Claims

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Application Information

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IPC IPC(8): C09D17/00
CPCC09D17/001C09D17/003
Inventor 吕仕铭周华陈爽胡艺民
Owner 常熟世名化工科技有限公司
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