Epoxy ester modified aqueous alkyd resin and preparation method thereof

A technology of water-based alkyd resin and alkyd resin, applied in the direction of coating, etc., can solve the problems of easy gelation, increased viscosity, and darkened resin color, etc., and achieve the effect of good yellowing resistance, good hardness, and not easy to stick
CN102391439AInactive Publication Date: 2012-03-28SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2012-03-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an epoxy ester modified aqueous alkyd resin and a preparation method thereof. The method comprises the following steps of: preparing alkyd resin, synthesizing epoxy ester, and synthesizing the epoxy ester modified aqueous alkyd resin: stirring and mixing epoxy ester and basic alkyd resin in mass ratio of 0.2:1-0.5:1, 1-3 parts of organic tin catalyst and 5-15 parts of dimethyl benzene, and performing reflux reaction at the temperature of 180 DEG C for 1-2 hours until the acid value is measured to be less than 7mgKOH / g; and water-dissolving the modified alkyd resin. A product provided by the invention keeps superior performances of paint dryness, glossiness, durability, flexibility, hardness, higher solubility and the like of the alkyd resin, has superior cohesive property, salt fog resistance and good self-drying property of the epoxy resin, and can keep that a coating has superior solvent resistance and chemical resistance.
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Description

technical field

[0001] The invention relates to the field of metal surface anticorrosion, in particular to an epoxy ester modified water-based alkyd resin and a preparation method thereof. Background technique

[0002] Alkyd resin has excellent durability, gloss, flexibility, hardness, and excellent brushability, and is widely used in vehicles, railways, shipbuilding, construction and other fields. However, solvent-based alkyd resins are often used at present, and the rapid volatilization of a large amount of solvents is one of the ways to quickly dry the resin coating, thus causing huge pollution to the environment. With the increasingly stringent environmental protection regulations around the world, paint manufacturers pay special attention to the volatile organic compound (VOC) content of paint, so water-soluble alkyd resin paint has gradually become a research hotspot.

[0003] The water-based alkyd resin mainly includes the salt-forming method, the non-ionic group met...

Claims

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