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Self-drying type water-solubility alkyd resin and preparation method thereof

An alkyd resin, water-soluble technology, used in coatings, polyester coatings, etc., can solve the problems of low paint film hardness, poor water resistance, slow drying speed, etc., achieve good gloss, improve paint film hardness and water resistance, The effect of plump paint film

Inactive Publication Date: 2008-03-26
SUZHOU JUFENG ELECTRICAL INSULATION SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, medium and long-oil fatty acid, glycerin and phthalic anhydride are used to synthesize water-soluble alkyd resin, which has the advantages of low cost and good coating film performance, but its wide application is limited due to defects such as low hardness of the paint film, slow drying speed, and poor water resistance. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] Embodiment: a kind of self-drying type water-soluble alkyd resin, it contains:

[0021] 22%~28% (weight) of linseed oil fatty acid;

[0022] 12% to 15% (weight) of trimethylolpropane;

[0023] 4%~9% (weight) of neopentyl glycol;

[0024] 19% to 22% (weight) of isophthalic acid;

[0025] 0.5% to 2% (weight) of maleic anhydride;

[0026] 4% to 9% (weight) of trimellitic anhydride;

[0027] 4% to 8% (weight) of triethylamine;

[0028] 13%~18% (weight) of auxiliary solvent;

[0029] 2% to 4% (weight) of drier;

[0030] 0.05% to 0.15% (weight) leveling agent.

[0031] The above-mentioned co-solvent is a composite co-solvent composed of ethylene glycol monobutyl ether and sec-butanol in a ratio of 1:2, and the preferred ratio of co-solvent to pure water is 2:8 (by weight).

[0032] The preparation method of this kind of self-drying type water-soluble alkyd resin is:

[0033] a) Heat and stir 370 grams of linseed oil fatty acid, 200 grams of trimethylolpropane, 120 gr...

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PUM

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Abstract

The present invention discloses one kind of self dried water soluble alkyd resin containing flax seed oil fatty acid, trimethylol propane, neopentylene glycol, m-phthalic acid, maleic anhydride, trimellitic anhydride, triethylamine, cosolvent, drying agent and leveling agent. It is prepared through the following steps: 1. mixing flax seed oil fatty acid, trimethylol propane, neopentylene glycol and m-phthalic acid, heating to 230-235 deg.c to react while introducing inert gas, and distilling off esterification produced water; 2. cooling to 170 deg.c after the acid value of the resin is lowered to below 10 mgKOH / g, adding maleic anhydride and trimellitic anhydride, and reaction at 170 deg.c until reaching acid value of 40-60 mgKOH / g; 3. cooling and adding assistants gradually, regulating pH value to 7.5-8.5, adding pure water, etc. to obtain the transparent homogeneous resin. The preparation process has less organic solvent discharging, and the resin can form film with excellent performance.

Description

technical field [0001] The invention relates to a self-drying water-soluble alkyd resin and a preparation method thereof, which are applied in the fields of maintenance and industrial coatings. Background technique [0002] Water-soluble alkyd coatings are a new type of low-pollution, energy-saving, and resource-saving coatings that are developing rapidly. With the enhancement of environmental protection awareness in various countries and the shortage of petrochemical products and energy, water-soluble alkyd coatings are increasingly valued by people. . In the prior art, medium and long-oil fatty acid, glycerin and phthalic anhydride are used to synthesize water-soluble alkyd resin, which has the advantages of low cost and good coating film performance, but its wide application is limited due to defects such as low hardness of the paint film, slow drying speed, and poor water resistance. application. Contents of the invention [0003] The object of the invention is: to o...

Claims

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Application Information

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IPC IPC(8): C08G63/49C09D167/08
Inventor 徐伟红张犇汝国兴滕敏
Owner SUZHOU JUFENG ELECTRICAL INSULATION SYST
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