Polyester resin for rapid curing of weather-durable powdery paint by beta-hydroxyalkylamide and preparation method thereof

A hydroxyalkylamide, rapid curing technology, applied in the field of polyester resin, can solve the problems of β-hydroxyalkylamide rapid curing polyester resin patent reports, etc., to achieve good anti-thick film pinhole performance, good aging performance, excellent leveling and mechanical properties
CN102443148AInactive Publication Date: 2012-05-09GUANGZHOU QINGTIAN INDAL
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGZHOU QINGTIAN INDAL
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a polyester resin for the rapid curing of a weather-durable powdery paint by a beta-hydroxyalkylamide. The polyester resin is obtained through carrying out a melting polycondensation reaction on the following components, by weight, 30-45% of a polyol, 45-60% of an aromatic polyprotic acid, 0-10% of an aliphatic polyprotic acid, 0-5% of a branching agent, 5-20% of an antiacid and 0.05-0.30% of an esterification catalyst. The invention also discloses a preparation method of the polyester resin. The polyester resin provided in the invention has the advantages of high glass-transition temperature and softening point, and appropriate melting viscosity and storage stability; and powdery paints prepared with the polyester resin have the advantages of excellent levelability, excellent mechanical performance, good thick film pinhole resistance and the like.
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Description

technical field

[0001] The invention relates to a polyester resin, in particular to a polyester resin for fast-curing weather-resistant powder coatings of β-hydroxyalkylamides, and also relates to a preparation method of the polyester resin. Background technique

[0002] Due to its own excellent advantages, powder coatings are gradually replacing organic solvent-based coatings, becoming an important development direction in the coatings industry, and have maintained a relatively fast growth rate since the 1990s. Domestic powder coatings are mainly used in the four major aspects of household appliances, architectural aluminum profiles, pipeline anticorrosion, and general coating. Powder coatings account for 64% of the powder coatings market, and domestic powder coatings for general coatings account for 18% of the powder coatings market; foreign home appliance powder coatings account for 10% of the powder coatings market, while domestic home appliance powder coatings account f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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