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A kind of highly concentrated universal color paste and its preparation method and application

A high-concentration and color paste technology, which is applied in the direction of pigment paste, coating, epoxy resin coating, etc., can solve the problem of deep color of polyester resin, poor stability of ester bonds, and influence on paint film resistance, color retention and gloss retention and other problems, to achieve the effects of no floating color and flowering, excellent color and gloss retention, alkali and water resistance, and reducing the possibility of re-flocculation or aggregation

Active Publication Date: 2022-06-28
NIPPON PAINT IND COATINGS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This dispersant is E10P modified polyester resin, and the polyester resin color and luster of this preparation method is darker, and color and luster is usually in 200-300, is not suitable for being used in the paint with higher color requirement; In addition, on the main chain of polyester resin The stability of the ester bond is not good, which will greatly affect the resistance of the paint film (including alkali and water resistance, color and gloss retention)

Method used

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  • A kind of highly concentrated universal color paste and its preparation method and application
  • A kind of highly concentrated universal color paste and its preparation method and application
  • A kind of highly concentrated universal color paste and its preparation method and application

Examples

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Effect test

preparation example Construction

[0040] In a preferred example, the preparation method of the polyester modified acrylic resin comprises the following steps:

[0041] Mix lauric acid, isononanoic acid, isooctanoic acid, NPG, TMP, terephthalic anhydride, hexahydrophthalic anhydride, tetrahydrophthalic anhydride and butenedioic anhydride and heat up to 120°C, dehydrate and heat up to 225°C within 4 hours. ℃ for 0.5 hours, when the acid value is less than 30mgKOH / g, add xylene to reflux, when the acid value is less than 6.5-10.5mgKOH / g and the viscosity is Z1-Z3, the polyester intermediate is obtained;

[0042] The polyester intermediate and solvent are heated to 150-160° C. under nitrogen protection, a mixture of acrylate monomer and 90wt% initiator is added dropwise within 3 hours, and the remaining initiator is added after holding for 1 hour. , heat preservation for 3 hours, and dilute to 70% solid content to obtain the polyester modified acrylic resin.

[0043]The above polyester modified acrylic resin stru...

Embodiment 1

[0066] The highly concentrated general environment-friendly color paste raw materials of this embodiment include: 31kg of polyester modified acrylic resin A with a mass percentage of 70%, 9.5kg of propylene glycol methyl ether acetate, 5kg of S-100 solvent, 48kg of iron yellow, polyurethane Dispersant 6.5kg.

[0067] Its preparation method is: (1) add 31kg of polyester modified acrylic resin A, 6.5kg of polyurethane-based dispersant, 9.025kg of propylene glycol methyl ether acetate, and 4.75kg of S-100 solvent into a container of suitable size, stir (400 -600rpm) for 10-15 minutes; (2) while stirring, add 48kg of PY42 iron yellow pigment, after adding the pigment, stir (400-600rpm) for 10-15 minutes; (3) while stirring, add residual solvent propylene glycol methyl along the container wall Ether acetate and S-100 solvent, continue to stir for 30 minutes until uniform; (4) start grinding and dispersing on the designated sand mill until the fineness meets the requirements;

[00...

Embodiment 2-5

[0070] The components of the high-concentration universal environmentally friendly colorants of each embodiment are shown in Table 1, the preparation method of each embodiment is basically the same as that of Example 1, and the technical indicators of the obtained coatings are shown in Table 2.

[0071] The formula composition of table 1 embodiment 2-5 environmental protection color paste

[0072]

[0073]

[0074] Table 2 Properties of the colorants obtained in Examples 1-5

[0075]

[0076] The above-mentioned high-concentration universal colorants were used to replace the original low-concentration colorants of several product systems to formulate color paints, and the key performance changes before and after the replacement were investigated.

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Abstract

The invention discloses a high-concentration general-purpose color paste, which comprises the following components in parts by weight: 30-60 parts of polyester modified acrylic resin; 3-15 parts of dispersant; optional dispersing aid 0-1 part; 10-50 parts of pigment; 10-50 parts of organic solvent. The color paste is commonly used in various general industrial coatings, and the obtained coating has good wettability, moderate viscosity, environmental protection, good color development and stability. The invention also discloses the preparation method and application of the color paste.

Description

technical field [0001] The present invention relates to the field of general industrial coatings. More specifically, it relates to a high-concentration universal color paste and its preparation method and application. Background technique [0002] With the development of the domestic economy, the coatings industry has entered a period of rapid development. In the application field of general industrial coatings, whether it involves light machine coatings or heavy machine coatings, application clients have put forward higher and higher requirements for durability and aesthetics. Polymer resins and pigments are important components of coatings. Polymer resins provide protection (meeting various tolerance requirements) and decorative properties (meeting gloss and fullness requirements) on the surface of various workpieces; pigments give the paint film a colorful color, mask defects in the substrate, beautify the appearance, and help improve the resistance of the coating. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D17/00C09D151/08C09D7/65C09D163/00
CPCC09D17/00C09D151/08C09D7/65C09D163/00C08L2205/03C08L75/04C08L33/08C08L51/08
Inventor 陈浦徐国虎高群郑金城
Owner NIPPON PAINT IND COATINGS SHANGHAI
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