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A kind of electrophoretic coating and preparation method thereof

A technology of electrophoretic coatings and epoxy resins, applied in the direction of electrophoretic coatings, epoxy resin coatings, anti-fouling/underwater coatings, etc., can solve the problems of not considering environmental hazards, single branched chain functional groups, and no anti-pollution components, etc. Achieve the effect of improving the disadvantages of the coating film, high gloss, and good surface anti-fouling ability

Active Publication Date: 2021-03-26
NIPPON PAINT IND COATINGS SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional kitchen and bathroom products, due to long-term oil stains, oil stains will stick to it, making it difficult to remove
Traditional kitchen and bathroom products, such as the range hood impeller, are modified by spraying oil-based paint or traditional epoxy electrophoretic coating. Due to the irregularity of the range hood impeller, spraying oil-based paint cannot cover all the positions of the impeller. Kitchen and bathroom utensils are difficult to clean due to oil stains and other pollution during long-term use; traditional electrophoretic coatings, because they use amine-modified epoxy resins, have relatively single branched chain functional groups, and the hydroxyl and hydrocyanic acid groups in the curing process Groups react, because there are not too many functional groups, when it is polluted, there is no anti-pollution component on the surface, and it is difficult to remove oil pollution
At the same time, the electrophoretic coatings of traditional kitchen and bathroom appliances did not consider environmental hazards at the beginning of the design. Heavy metals such as tin were introduced. After long-term use and wiping, the residual tin will have a toxic effect on the human body.

Method used

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  • A kind of electrophoretic coating and preparation method thereof
  • A kind of electrophoretic coating and preparation method thereof
  • A kind of electrophoretic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:

[0058] In a four-neck flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 454.5g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 107.4g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 301.4 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 106.7g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , adding 30.1 g of...

Embodiment 2

[0072] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:

[0073] In a four-necked flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 480.2g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 123.2g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 315.3 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 127.3g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , add 32.5g of m...

Embodiment 3

[0087] The preparation of low-temperature polyfunctional block type isocyanate curing agent, described preparation method comprises the following steps:

[0088]In a four-necked flask (manufactured by Collins of Shanghai Gaoxin Chemical Glass Co., Ltd.) with a condenser and nitrogen protection, put 421.6g of diphenylmethane diisocyanate (purchased from Wanhua Chemical Group Co., Ltd.) and 108.2g of formazan Base isobutyl ketone (purchased from Jinan Century Tongda Chemical Co., Ltd.), the temperature was raised to 40 ° C, and 304.5 g of methyl ethyl ketone oxime (purchased from Baishun (Beijing) Chemical Technology Co., Ltd.) was added dropwise, controlled at 45 ± 3 ° C, NCO The equivalent is controlled at 250-270; add 103.5g of ethylene glycol butyl ether (purchased from Jinan Century Tongda Chemical Co., Ltd.), after the addition, the temperature rises to 100°C, and it is kept at 100°C for 1 hour. The actual NCO equivalent is 48120, and the result is >42000 , add 42.7g of me...

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Abstract

The invention discloses electrophoretic paint. The electrophoretic paint is prepared from the following components in parts by weight: 400-500 parts of emulsions for the electrophoretic paint, 90-100parts of color paste and 400-800 parts of pure water. The invention further discloses a preparation method of the electrophoretic paint. The preparation method includes the step of evenly stirring the400-500 parts of the emulsions for the electrophoretic paint, 90-100 parts of the color paste and 400-800 parts of the pure water to obtain the electrophoretic paint. Dry coating films made from theelectrophoretic coating have the advantages of no heavy metal tin, strong anti-contamination ability, easiness in cleaning and the like.

Description

technical field [0001] The invention belongs to the technical field of cathodic electrophoretic paint, and in particular relates to an easy-clean electrophoretic paint for kitchen and bathroom and a preparation method thereof. Background technique [0002] For traditional kitchen and bathroom products, due to long-term oil stains, oil stains will stick to them and are difficult to remove. Traditional kitchen and bathroom products, such as the range hood impeller, are modified by spraying oil-based paint or traditional epoxy electrophoretic coating. Due to the irregularity of the range hood impeller, spraying oil-based paint cannot cover all positions of the impeller. Kitchen and bathroom utensils are difficult to clean due to oil pollution and other pollution during long-term use; traditional electrophoretic coatings, because they use amine-modified epoxy resins, have relatively single branched chain functional groups, and the hydroxyl groups and hydrocyanic acid groups in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/44C09D163/00C09D5/16
CPCC09D5/1662C09D5/4442
Inventor 王雷侯长勇
Owner NIPPON PAINT IND COATINGS SHANGHAI
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