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Modified water-based baking varnish alkyd resin with high comprehensive performance and preparation method thereof

A comprehensive performance, alkyd resin technology, applied in the direction of coating, etc., can solve the problems of poor comprehensive performance of water-based baking varnish resins, and achieve the effects of reducing environmental burden, improving yellowing resistance, and improving yellowing resistance

Pending Publication Date: 2021-08-06
JIANGSU HUALUN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problem of poor comprehensive performance of conventional water-based baking varnish resins, a modified water-based baking varnish alkyd resin with high comprehensive performance and its preparation method are provided

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of high comprehensive performance modified waterborne baking varnish alkyd resin, comprises the following steps:

[0038] (1) Raw materials required for preparing the first semi-finished product: 83.9% glycidyl tertiary carbonic acid ester, 16% trihydroxypropane, 0.1% organotin catalyst,

[0039] Add most of the tertiary carbonic acid glycidyl ester 78% and trihydroxypropane 16% into the reactor, stir, raise the temperature and maintain the temperature at 120°C for half an hour, then add the catalyst organotin 0.1% and the remaining amount of tertiary carbonic acid Glycidyl ester 5.9% continues to heat up to 145°C and maintain the reaction at this temperature for half an hour, then continue to heat up to 175°C and maintain the reaction at this temperature for 4 hours to form the first semi-finished product; seal and package for subsequent use;

[0040] (2) Preparation of raw materials for the second semi-finished product: 25% of the first se...

Embodiment 2

[0045] A kind of preparation method of high comprehensive performance modified waterborne baking varnish alkyd resin, comprises the following steps:

[0046] (1) Raw materials required for preparing the first semi-finished product: 82.4% glycidyl tertiary carbonic acid ester, 17.5% trihydroxypropane, 0.1% organotin catalyst,

[0047] Add most of the glycidyl tertiary carbonic acid ester 76.5% and trihydroxypropane 17.5% into the reaction kettle, raise the temperature and maintain the temperature at 120°C for half an hour under stirring, then add the catalyst organotin 0.1% and the remaining amount of tertiary carbonic acid Glycidyl ester 5.9% continues to heat up to 145°C and maintains the reaction at this temperature for half an hour, then continues to heat up to 175°C and maintains the reaction at this temperature for 4 hours to form the first semi-finished product; sealed and packaged for subsequent use;

[0048] (2) Preparation of raw materials for the second semi-finished...

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Abstract

The invention relates to modified water-based baking varnish alkyd resin with high comprehensive performance and a preparation method of the modified water-based baking varnish alkyd resin. The preparation method comprises the following steps: (1) reacting glycidyl tertiary carboxylic ester with polyhydroxy alkane and a catalyst to form a first semi-finished product; (2) reacting the obtained first semi-finished product with polybasic acid, polyhydric alcohol, saturated fatty acid, an inorganic antioxidant, a reflux solvent and a first diluting solvent to obtain a second semi-finished product; and (3) reacting the obtained second semi-finished product with a second diluting solvent, an organic antioxidant, an acrylate compound, a monomer and an initiator to finally obtain the modified water-based baking varnish alkyd resin with high comprehensive performance. The obtained modified water-based baking varnish alkyd resin has good comprehensive performance such as good flexibility, glossiness, hardness, wear resistance and chemical resistance, the raw materials are easy to obtain in the market, the price is relatively low, and the produced product has better market competitiveness.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a modified water-based baking varnish alkyd resin with high comprehensive performance and a preparation method thereof. Background technique [0002] Amino baking varnish resin coatings are widely used in all aspects of social life, sports and fitness equipment, battery cars, various plastic parts, glass parts and so on. A large part of the resin used in these coatings is oily resin, which uses a large amount of solvents. During its use, the volatilization of organic solvents will cause great pollution to the environment. [0003] With the improvement of domestic environmental protection requirements year by year, water-based amino baking varnish resins are gradually promoted. However, the quality of water-based resins is uneven. At present, many water-based resins on the market are due to factors such as coating and paint film appearance. More co-solvents will be added, so it ...

Claims

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Application Information

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IPC IPC(8): C08F283/01C08F212/08C08F220/06C09D151/08
CPCC08F283/01C09D151/08C08F212/08C08F220/06
Inventor 吴昊陈忠平顾龙
Owner JIANGSU HUALUN CHEM
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