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Color paste for cathode electrophoretic paint and preparation method of color paste

A cathodic electrophoresis and color paste technology, which is applied in the direction of electrophoretic coatings, pigment pastes, coatings, etc., can solve the problems of low stability, low uniformity of color paste, and poor performance of cathodic electrophoretic paint, etc., to achieve improved Uniformity and stability, and the effect of improving throwing power

Active Publication Date: 2020-04-17
湖北同邦达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The color paste for cathodic electrophoretic paint disclosed in the prior art has low uniformity and low stability, so that the produced cathodic electrophoretic paint has poor throwing power and other performances, and cannot meet the needs of some existing coating industries. requirements

Method used

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  • Color paste for cathode electrophoretic paint and preparation method of color paste
  • Color paste for cathode electrophoretic paint and preparation method of color paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a kind of color paste for cathodic electrophoretic paint, and the preparation method comprises the following steps:

[0026] Modification of epoxy resin with decylphenol: 500 parts of epoxy resin e-54, 125 parts of epoxy resin e-51, 63 parts of bisphenol, 125 parts of decylphenol, 70 parts of xylene, 5 parts of bisphenol Add methylbenzylamine into the reaction kettle one by one, react at 130°C, detect the epoxy value in the reaction system, when the epoxy value is 0.16, cool down to 90°C, add 100 parts of methyl isobutyl ketone, add 45 parts N-methylethanolamine was reacted at 90°C for 1 hour, 30 parts of monoethanolamine was added, reacted at 110±5°C for 3 hours, and the solvent was removed to obtain a decylphenol-modified epoxy resin.

[0027] Mix 20 parts of decylphenol-modified epoxy resin, 5 parts of ethylene glycol butyl ether, 5 parts of ethylene glycol and 3 parts of butanol evenly to obtain a mixed solution, add 1 part of carbon black t...

Embodiment 2

[0030] This embodiment provides a kind of color paste for cathodic electrophoretic paint, and the preparation method comprises the following steps:

[0031]Modification of epoxy resin with decylphenol: 500 parts of epoxy resin e-54, 125 parts of epoxy resin e-51, 63 parts of bisphenol, 125 parts of decylphenol, 70 parts of xylene, 5 parts of di Add methylbenzylamine into the reaction kettle in turn, react at 130°C, detect the epoxy value in the reaction system, when the epoxy value is 0.16, cool down to 90°C, add 100 parts of methyl isobutyl ketone, add 45 parts N-methylethanolamine was reacted at 90°C for 1 hour, 30 parts of monoethanolamine was added, reacted at 110±5°C for 3 hours, and the solvent was removed to obtain a decylphenol-modified epoxy resin.

[0032] Mix 25 parts of decylphenol-modified epoxy resin, 6 parts of ethylene glycol butyl ether, 6 parts of ethylene glycol and 4 parts of butanol evenly to obtain a mixed solution, add 1.2 parts of carbon black to the mi...

Embodiment 3

[0035] This embodiment provides a kind of color paste for cathodic electrophoretic paint, and the preparation method comprises the following steps:

[0036] Modification of epoxy resin with decylphenol: 500 parts of epoxy resin e-54, 125 parts of epoxy resin e-51, 63 parts of bisphenol, 125 parts of decylphenol, 70 parts of xylene, 5 parts of di Add methylbenzylamine into the reaction kettle in turn, react at 130°C, detect the epoxy value in the reaction system, when the epoxy value is 0.16, cool down to 90°C, add 100 parts of methyl isobutyl ketone, add 45 parts N-methylethanolamine was reacted at 90°C for 1 hour, 30 parts of monoethanolamine was added, reacted at 110±5°C for 3 hours, and the solvent was removed to obtain a decylphenol-modified epoxy resin.

[0037] Mix 15 parts of decylphenol-modified epoxy resin, 3 parts of ethylene glycol butyl ether, 3 parts of ethylene glycol and 1 part of butanol evenly to obtain a mixed solution, add 0.5 parts of carbon black to the mi...

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Abstract

The invention provides color paste for a cathode electrophoretic paint and a preparation method of the color paste. The color paste for the cathode electrophoretic paint comprises the following raw materials in parts by weight: 15-30 parts of decylphenol modified epoxy resin, 3-10 parts of ethylene glycol butyl ether, 3-10 parts of ethylene glycol, 1-6 parts of butanol, 0.1-2 parts of carbon black, 7-14 parts of hydroxy cellulose, 1-6 parts of ferric oxide, 0.5-2 parts of acetic acid and 12-25 parts of titanium dioxide. According to the invention, the decylphenol modified epoxy resin is mixedwith a specific solvent and other components, so that the salt fog resistance and throwing power of the cathode electrophoretic paint prepared from the color paste composed of the raw materials are effectively improved, and the electrophoretic coating productivity is improved.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a color paste for cathodic electrophoretic paint and a preparation method thereof. Background technique [0002] Electrophoretic paint is a kind of water-based paint, also known as electrophoretic paint. Electrophoresis is one of the most effective methods for coating metal workpieces, and it is a coating construction technology developed in the 1960s. Because cathodic electrophoretic coating has the advantages of excellent corrosion resistance, high throwing power rate, high leveling property, high degree of coating automation and low environmental pollution, it has been paid more and more attention. With the development of electrophoretic coating technology, the performance requirements of electrophoretic coatings are getting higher and higher, especially when coating surfaces with irregular shapes such as concaves, cavities, and gaps. The index to measure whether the cathod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D17/00C09D5/44
CPCC09D17/005C09D17/008C09D17/001C09D5/4492
Inventor 周雪科徐雪俊
Owner 湖北同邦达科技有限公司
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