High-gloss polyester powder coating containing phosphite and preparation method of high-gloss polyester powder coating

A phosphite, polyester powder technology, applied in polyester coatings, powder coatings, coatings, etc., can solve problems such as poor gloss, achieve high gloss, reduce pollution, and good hardness

Pending Publication Date: 2022-03-11
GUANGXI XINJING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although powder coatings containing phosphite have good antirust performance, their gloss is relatively poor, and they are mainly used to prepare matting coatings.

Method used

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  • High-gloss polyester powder coating containing phosphite and preparation method of high-gloss polyester powder coating
  • High-gloss polyester powder coating containing phosphite and preparation method of high-gloss polyester powder coating
  • High-gloss polyester powder coating containing phosphite and preparation method of high-gloss polyester powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Phosphite high-gloss polyester powder coating, composition: carboxyl polyester resin (acid value 25mgKOH / g, glass transition temperature 55 ℃) 90 parts, TGIC curing agent 5 parts, strontium phosphite 0.2 parts, titanium dioxide 5.3 parts, quartz Powder 4, 0.05 parts of polyacrylate.

Embodiment 2

[0027] Phosphite high-gloss polyester powder coating, composition: carboxyl polyester resin (acid value 28mgKOH / g, glass transition temperature 60 ℃) 90 parts, TGIC curing agent 20 parts, iron phosphite 19 parts, lithopone 50 parts, 8 parts of modified polysiloxane.

Embodiment 3

[0029] Phosphite high-gloss polyester powder coating, composition: carboxyl polyester resin (acid value 28mgKOH / g, glass transition temperature 60°C) 62.5 parts, TGIC curing agent 30 parts, iron phosphite 2.3 parts, lithopone 0.1 part, 0.2 part of modified polysiloxane.

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Abstract

The invention discloses a high-gloss polyester powder coating containing phosphite. The high-gloss polyester powder coating is prepared from the following active components in parts by weight: 20-90 parts of polyester resin, 5-20 parts of a curing agent, 0.2-19 parts of phosphite, 0.1-50 parts of pigment filler and 0.05-8 parts of an auxiliary agent. According to the high-gloss polyester powder coating disclosed by the invention, a sprayed paint film has very high glossiness, and a coating layer is relatively good in salt water resistance and salt fog resistance and has very wide development potential.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a high-gloss polyester powder coating containing phosphite and a preparation method thereof. Background technique [0002] Since the 21st century, with the increasing awareness of environmental protection of human beings, industrial hygiene laws and regulations have increasingly strict restrictions on the emission of volatile organic compounds (VOC) to the atmosphere, and the paint and coating industry has paid more and more attention to environmentally friendly coatings and coating technologies. [0003] As a new type of environmentally friendly material, powder coating has the characteristics of completely solvent-free, 100% solid powder, and zero discharge of "three wastes" during the production process. In addition, the powder coating itself It has the advantages of high mechanical properties of the film layer, excellent chemical resistance, corrosion resistance, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D5/03C09D7/61
CPCC09D167/00C09D5/033C08K2201/014C08K3/32
Inventor 王富丽吴良王俊虹成竞祯李开成
Owner GUANGXI XINJING TECH
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