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A kind of oil-shrinking cathodic electrophoretic paint and preparation method thereof

A cathodic electrophoretic coating and polydimethylsiloxane technology, which is applied in electrophoretic coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., can solve the problem of limited development and application, shrinkage of paint film, and failure to achieve multiple Subsequent effects and other issues

Active Publication Date: 2021-12-28
HAOLISEN CHEM TECH (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the paint film is dried in this way of electrophoresis, the additives flow to the surface of the paint film. Although it has the effect of shrinking oil, it cannot achieve the effect of repeated times, and with the extension of time, the original paint Due to its low surface tension, shrinkage additives will float on the surface of the original paint, causing shrinkage and other disadvantages of the paint film
Limit its development and application in the range hood field

Method used

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  • A kind of oil-shrinking cathodic electrophoretic paint and preparation method thereof

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Effect test

Embodiment 1

[0021] A kind of shrinkage cathodic electrophoretic paint, comprising by weight: 30 parts of toluene diisocyanate;

[0022] 5 parts of methyl isobutyl ketone;

[0023] 5 parts of carboxy-terminated polydimethylsiloxane;

[0024] 40 parts of ethylene glycol butyl ether;

[0025] 200 parts of epoxy resin;

[0026] 10 parts of acetic acid;

[0027] 900 parts of pure water.

[0028] In addition, a preparation method for preparing the above-mentioned shrinkage cathodic electrophoretic coating is provided: including the following steps, adding toluene diisocyanate and methyl isobutyl ketone into a reaction vessel with stirring and condensation, blowing nitrogen gas, and raising the temperature to 60±2°C , and then slowly add carboxyl-terminated polydimethylsiloxane dropwise to the reaction vessel, the dropping time is 30±5 minutes, the temperature is maintained at 60±2°C during the dropping process, and the temperature is raised to 80±2°C after the dropping is completed, React ...

Embodiment 2

[0031] A shrink oil cathodic electrophoretic coating, comprising: 65-70 parts of isophorone diisocyanate; 10-15 parts of methyl isobutyl ketone; 8-10 parts of amino-terminated polydimethylsiloxane 55-60 parts of ethylene glycol butyl ether; 300-350 parts of epoxy resin; 15-20 parts of acetic acid; 900-1000 parts of pure water.

[0032] The preparation method is the same as the aforementioned method.

Embodiment 3

[0034] A shrink oil cathodic electrophoretic coating, comprising: 68 parts of diphenylmethane diisocyanate; 13 parts of methyl isobutyl ketone; 9 parts of amino-terminated polydimethylsiloxane; 58 parts of ether; 325 parts of epoxy resin; 18 parts of acetic acid; 950 parts of pure water.

[0035] The preparation method is the same as the aforementioned method.

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Abstract

The application discloses a shrink oil cathodic electrophoretic coating and a preparation method thereof. Add isocyanate and methyl isobutyl ketone into a reaction vessel, pass nitrogen gas, stir and heat at the same time; Terminal polydimethylsiloxane, heat after the dropwise addition, and then cool down after the first reaction; continue to drop ethylene glycol butyl ether into the reaction vessel, heat, and wait for the second reaction to finish , cool down for later use; add epoxy resin to another reaction vessel, add the prepared above-mentioned materials into this reaction vessel, stir, heat, then add acetic acid to neutralize the resin; stop heating, add pure water, and disperse evenly Finished product is prepared. The oil shrinkage electrophoretic paint of the present invention has excellent multiple continuous oil shrinkage effects and hardness, and has the advantages of good original paint stability, easy application, and the like.

Description

technical field [0001] The invention belongs to the technical field of cathodic electrophoretic coatings and preparation methods, and in particular relates to a shrink oil cathodic electrophoretic coating and a preparation method thereof. Background technique [0002] Electrophoretic coating is a new type of coating developed and industrialized in the mid-1970s. It has the advantages of environmental protection, high throwing power, high coating efficiency, good coating quality and high degree of application automation. The awareness of environmental protection is increasing day by day, relevant environmental protection laws and regulations impose strict restrictions on the content of volatile organic solvents, and the application of electrophoretic coatings is also becoming more and more extensive. [0003] Epoxy cathodic electrophoretic coatings have advantages such as strong adhesion, high temperature resistance, and chemical resistance. However, there are very few electr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D175/04C09D5/44
CPCC09D163/00C09D5/4473C09D5/4488C08L75/04
Inventor 黄磊陈海波赵颖胡浩东黄诚诚朱婷婷
Owner HAOLISEN CHEM TECH (JIANGSU) CO LTD
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