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Amino resin aqueous finishing coating

A technology of amino resin and varnish paint, applied in the direction of coating, etc., can solve the problems of brittle paint film and low temperature resistance, and achieve the effect of low cost, good gloss and good anti-scratch effect

Inactive Publication Date: 2013-03-27
YIYANG XIANGRUI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that high temperature drying is required to cross-link and cure, and the paint film will become brittle after drying too much
Not suitable for products that are not resistant to high temperatures (such as plastic electroplating products)

Method used

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Embodiment Construction

[0018] The present invention is described further below, preferred embodiment of the present invention is: the amino resin water-based varnish coating described in the present embodiment comprises the following steps:

[0019] Step 1: Making the Acrylic / Epoxy Copolymer

[0020] The percentage by weight of each component of the described acrylic acid / epoxy resin copolymer is: 8% acrylic acid, 15% methyl methacrylate, 32% butyl acrylate, 18% styrene, 7% epoxy resin, acrylic acid -Hydroxypropyl Ester 7%, Benzoyl Peroxide 1.5%, Ethylene Glycol Butyl Ether 19.5%;

[0021] The preparation method of the above-mentioned copolymer is: at first acrylic acid group is introduced in the epoxy resin to generate epoxy acrylic resin (AA-ER), under the effect of initiator benzoyl peroxide, its double bond cracks and other acrylate single The body is gradually polymerized by free radical polymerization to form AA-ER copolymer;

[0022] The second step: making acrylic / epoxy / amino resin prepoly...

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PUM

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Abstract

The invention discloses an amino resin aqueous finishing coating, which consists of the following components in percentage by weight: 50-65% of acrylic acid / epoxy / amino resin, 2-6% of triethylamine, 2-6% of ethylene glycol butyl ether, 18-26% of isopropyl alcohol, 0.2-1% of antifoaming agent, 0.2-1% of BYK-300, 0.06-0.1% of ammonium dichromate and 3-15% of pure water. The coating prepared depending on the above formula can be cured not only at high / medium temperature but at low temperature; the finishing coating disclosed by the invention can be used for coating electroplated workpieces, brass products, alloys and various metals and can be cured at low temperature; after spraying construction, the finishing coating can be completely cured within 10-20min at room temperature or at 60-110 DEG C; and after curing, the paint film has the advantages of being better in gloss, hardness and abrasion resistance, and excellent in scratching resistance effect.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to an amino resin water-based finish coating. Background technique [0002] Existing varnish coatings include acrylic resin coatings, epoxy resin coatings, polyurethane coatings, amino resin coatings, and the like. Among them, the acrylic resin coating is a coating made of a copolymer of methacrylate and acrylate. In order to improve the performance of the copolymerized resin and reduce the cost, it is often necessary to use a certain proportion of other unsaturated olefin units to copolymerize with it. This is a new type of coating that has developed rapidly recently. The advantages are light paint film color, good gloss and color retention, excellent weather resistance, and good chemical resistance, and can be used below 180 °C. The paint film dries quickly (drying speed is similar to nitro paint), has good adhesion to metal, and can be stored for a long time. Three anti-(dam...

Claims

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Application Information

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IPC IPC(8): C09D161/32C08G12/40C08F283/10
Inventor 赵祥志赵叔阳沈镭王友志
Owner YIYANG XIANGRUI TECH
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