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Preparation method of cationic acrylate epoxy resin

An acrylate and epoxy resin technology, used in epoxy resin coatings, coatings, electrophoretic coatings, etc., can solve the problems of yellowing, difficult to high-quality outdoor paints and high-decorative paints, poor weather resistance, etc. Achieve the effect of increasing surface charge concentration, improving poor stability and improving compatibility

Inactive Publication Date: 2013-02-06
ANHUI LINGYANG NEW MATERIAL CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

At present, epoxy resin is mostly used as the main film-forming substance. Because of its high adhesion and excellent withering and anti-corrosion performance, it is often used as primer and anti-corrosion paint. Quality exterior and high decorative paints

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0015] (1) Preparation of prepolymer

[0016] Add 199 parts of TDI into the reaction kettle equipped with a stirrer, reflux condenser and thermometer, start stirring, and raise the temperature to 45°C, and at the same time, add 39 parts of ethylene glycol ether and 138 parts of diethylene glycol ether into the dropping tank , start to drop the mixture of ethylene glycol ether and diethylene glycol ether, the dropping temperature is strictly controlled at 50±2°C, the dropping time is controlled within the range of 180-210min, pay attention to the dropping speed to prevent the temperature from being too high. After the dropwise addition, keep stirring at 50°C for more than 30mmin, then add 11 parts of methyl isobutyl ketone, then raise the temperature to 70°C, keep it at 70±2°C for 90min, and after the detection indicators meet the technical requirements, cool down for later use;

[0017] (2) Preparation of cationic acrylate resin

[0018] Add 252 parts of solvent propylene...

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Abstract

The invention discloses a preparation method of cationic acrylate epoxy resin, belonging to the technical field of a preparation method of resin for a cathode electrophoretic coating. The conventional cathode electrophoretic coating has poor emulsion stability, and the corrosion resistance and the weathering resistance cannot completely meet the application requirements. According to the cationic acrylate epoxy resin prepared by the invention, the positive charge concentration in a system is increased, the compatibility of the epoxy resin and acrylate copolymer is improved, the particle size of latex is reduced, the surface charge concentration of the latex particles is increased, and the defects of poor stability and inconvenience in construction of the conventional cathode electrophoretic coating are improved, so that the cathode electrophoretic coating has more superior corrosion resistance and weathering resistance of a paint film.

Description

technical field [0001] The invention relates to a preparation method of cationic acrylate epoxy resin, which belongs to the technical field of resin preparation methods for cathodic electrophoretic coatings. Background technique [0002] Cathodic electrophoretic coating has been paid more and more attention by people because of its excellent corrosion resistance, high penetration rate, high leveling property, high decorative property, high degree of coating automation, and low environmental pollution. It is mainly used as a cathodic electrophoretic primer for the automobile itself and its parts, and also as a primer for motorcycles, bicycles, and household appliances with high corrosion resistance. [0003] In cathodic electrophoretic coatings, resin emulsion is the main film-forming substance, which determines the film performance of cathodic electrophoretic coatings. At present, epoxy resin is mostly used as the main film-forming substance. Because of its high adhesion a...

Claims

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Application Information

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IPC IPC(8): C08G59/16C08G59/17C08G59/14C08G81/00C08F283/10C08F220/14C08F220/22C08F220/28C08F220/06C08F212/08C08F8/32C09D163/10C09D187/00C09D5/44
Inventor 刘玉王杰林秀龙
Owner ANHUI LINGYANG NEW MATERIAL CO LTD
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