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Waterborne polyurethane acrylate emulsion, preparation method thereof and waterborne matte paint

A polyurethane acrylate, water-based technology, applied in the field of coatings, can solve the problems of poor fineness of matte powder, limited application range of wear-resistant matte powder paint, and rough appearance of water-based matte powder paint.

Inactive Publication Date: 2021-05-28
ZHEJIANG UVCHEM SPECIAL COATINGS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional water-based polyurethane acrylate is mainly synthesized by prepolymer dispersion method and acetone method, and then neutralized and emulsified to obtain emulsion, but the water-based matte powder paint obtained by it has rough appearance and poor fineness of matte powder, which limits its application
Publication Nos. CN108531042A and CN107446484A patent documents both disclose that the abrasion resistance of the paint film is improved by introducing silica inorganic components, but the hidden danger of compatibility between silica inorganic substances and polymer components limits this type of wear resistance. Application range of matt powder paint

Method used

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  • Waterborne polyurethane acrylate emulsion, preparation method thereof and waterborne matte paint
  • Waterborne polyurethane acrylate emulsion, preparation method thereof and waterborne matte paint
  • Waterborne polyurethane acrylate emulsion, preparation method thereof and waterborne matte paint

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Experimental program
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Embodiment 1～3

[0045] (1) Preparation of water-based polyurethane acrylate emulsion

[0046] In terms of parts by weight, the proportion of raw material components is shown in Table 1. Add polyoxyethylene diol and polycarbonate diol to a glass reactor with mechanical stirring, thermometer and vacuum device. Dehydration under vacuum conditions for 60 minutes, and test the moisture content of oligomer diols to ensure that its moisture content is less than or equal to 0.2 wt %; cool down to a material temperature of 50°C, add isophorone diisocyanate and dibutyltin dilaurate, and heat up to The material temperature is 80°C, keep it warm for 120min until the specified residual -NCO is 7.5wt%; cool down to the material temperature of 50°C, continue to add unsaturated acrylate, dibutyltin dilaurate and p-hydroxyanisole, and heat up to the material temperature of 80°C, heat preservation for 120min until the residual -NCO is 0.1wt%, to prepare non-emulsifying polyurethane acrylate prepolymer

[0047...

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Abstract

The invention provides a water-based polyurethane acrylate emulsion, a preparation method thereof and a water-based matt paint; the water-based polyurethane acrylate emulsion comprises the following raw material components by weight: 20-80 parts of a non-emulsified polyurethane acrylate prepolymer; 0-70 parts of polyurethane acrylate oligomer; 0-50 parts of a first ultraviolet light curing monomer; and 50-70 parts of water. The waterborne polyurethane acrylate emulsion is good in performance, and the waterborne matt powder paint prepared from the waterborne polyurethane acrylate emulsion is smooth in appearance, high in matt powder fineness and good in wear resistance.

Description

technical field [0001] The application relates to the technical field of coatings, in particular to a water-based polyurethane acrylate emulsion, a preparation method thereof, and a water-based matte paint. Background technique [0002] Matte paint is a paint with relatively lower gloss than high-gloss paint. Usually, the gloss of matte paint at a 60-degree angle is below 20. Matte paint has the characteristics of soft appearance and strong texture. It has been widely used in high-end fields such as 3C electronics and cosmetics. High wear-resistant matte paint has become the direction of demand pursued by consumers. The increase in environmental protection has given birth to the further development of high wear-resistant water-based matte paint. High wear-resistant water-based polyurethane acrylate emulsion is a water-based resin obtained by dispersing water instead of solvent. It has both the excellent wear resistance, adhesion and flexibility of polyurethane, and also has...

Claims

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Application Information

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IPC IPC(8): C09D175/16C08G18/75C08G18/44C08G18/48C08G18/67C09D4/02C09D7/20
CPCC09D175/16C08G18/755C08G18/4018C08G18/44C08G18/4833C08G18/673C09D4/00C09D7/20C08L2205/02C08L75/14C08F222/1065C08F222/103C08F222/105C09D5/022C08G18/227C08G18/6715C08G18/0866C08F2/48C08F2/50C08G18/48C08G18/40C09D4/06C08F2/46C08G18/12C09D175/14
Inventor 吕波王玉平余立刚彭富亮
Owner ZHEJIANG UVCHEM SPECIAL COATINGS CO LTD
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