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Anti-yellowing matte odorless PU polyurethane top-coat paint and preparation method thereof

A technology of anti-yellowing and polyurethane, which is applied in the field of coatings, can solve the problems of residual gloss and odor, difficult gloss, poor yellowing resistance, etc., and achieve the effect of fast drying speed, delicate and smooth hand feeling, and better leveling effect

Active Publication Date: 2020-11-24
福州展辰新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is: how to solve the problem of poor yellowing resistance of the two-component PU matt clear finish polyurethane coating after spraying and film formation, and the glossiness is difficult to achieve zero or less than 3 Gloss below 100% and the problem of residual odor

Method used

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  • Anti-yellowing matte odorless PU polyurethane top-coat paint and preparation method thereof
  • Anti-yellowing matte odorless PU polyurethane top-coat paint and preparation method thereof
  • Anti-yellowing matte odorless PU polyurethane top-coat paint and preparation method thereof

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preparation example Construction

[0041] The present invention provides a kind of preparation method of anti-yellowing dull PU polyurethane clear topcoat, comprising the following steps:

[0042] Step 1. Mix anti-yellowing acrylic resin, cellulose acetate butyrate, ether ester solvent, dispersant and defoamer, and disperse evenly under the condition of 600-800r / min; then add matting powder and wax powder, Disperse under the condition of 800-1200r / min until the fineness is ≤30um; then add acrylic leveling agent, silicone leveling agent and ester solvent, disperse evenly under the condition of 600-800r / min, and then pass the inspection. Filtration and packaging to obtain component A;

[0043] Step 2. Add dehydrating agent to n-butyl acetate, add HDI isocyanate curing agent and TDI isocyanate curing agent in turn after 24 hours, stir evenly, and then inspect and pack to obtain component B;

[0044] Step 3, mixing propylene glycol methyl ether acetate, n-butyl acetate and ethyl acetate and stirring evenly, then i...

Embodiment 1

[0061] The anti-yellowing matt odor-cleaning PU polyurethane clear topcoat consists of component A, component B and diluent; the component A is A, the component B is BA, and the diluent is dilute a.

Embodiment 2

[0063] The anti-yellowing matt odor-cleaning PU polyurethane clear topcoat is composed of component A, component B and diluent; the component A is AB, the component B is BB, and the diluent is dilute b.

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Abstract

The invention discloses an anti-yellowing matte odorless PU polyurethane top-coat paint, and belongs to the technical field of paints. The anti-yellowing matte odorless PU polyurethane top-coat paintcomprises a component A, a component B and a diluent, wherein the component A comprises anti-yellowing odorless acrylic resin, cellulose acetate butyrate, an ether ester solvent, a dispersing agent, adefoaming agent, matting powder, wax powder, acrylic leveling agent, an organic silicon leveling agent and an ester solvent; the component B comprises n-butyl acetate, a dehydrating agent, an HDI isocyanate curing agent and a TDI isocyanate curing agent; and raw materials are added step by step for stirring in the preparation method. According to the anti-yellowing matte odorless PU polyurethanetop-coat paint disclosed by the invention, the ultra-matte (less than 3 degrees) or even matte effect can be achieved after a small amount of matting powder is used, the problem that the existing matte top-coat paint cannot achieve the matte or even ultra-matte effect is solved, and a paint film prepared by the preparation method is high in drying speed, and capable of achieving effects of yellowing resistance and odor removal.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a yellowing-resistant matte odor-free PU polyurethane clear topcoat and a preparation method thereof. Background technique [0002] With the continuous improvement of people's cultural life and the gradual enhancement of environmental protection awareness, people's taste and requirements for living environment and home furnishing are also gradually increasing. The coating effect of various furniture surfaces is the standard for people to choose furniture, and it is also the criterion for judging the paint coating effect of furniture surface. In recent years, anti-yellowing, odor-cleaning and matte furniture coatings have played an indispensable role in furniture production and are increasingly favored by consumers. However, it has always been a difficult problem for PU polyurethane clear topcoat manufacturers to achieve ultra-matt gloss or even a completely dull coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/42C09D7/47C08G18/62C08G18/64
CPCC09D175/04C09D7/42C09D7/47C08G18/4081C08G18/6216C08G18/6484C08L2201/08C08K3/36C08K5/101C08K5/54
Inventor 梁贵华孔令飞徐猛
Owner 福州展辰新材料有限公司
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