Preparation method of high-solid acrylic polyurethane coating

A technology of acrylic polyurethane and high solid content, which is applied in the direction of polyurea/polyurethane coatings and coatings, and can solve problems such as environmental unfriendliness, destruction of the earth's atmosphere and ecological environment, and human health damage

Inactive Publication Date: 2016-07-06
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The amount of coatings is developing rapidly in our country, but most of the coatings are environmentally unfriendly materials. The emission of organic volatiles in coatings is the main source of environmental pollution from coatings. According to statistics, millions of tons of solvents are discharged from the wo

Method used

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  • Preparation method of high-solid acrylic polyurethane coating

Examples

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Embodiment 1

[0013] Add 0% glycidyl neodecanoate into the solvent of xylene and butyl acetate, blow in nitrogen, heat up to about 140°C, reflux for 10 minutes, and mix the monomer and part of the initiator solution evenly. Put it into the funnel and slowly add the mixed solution within 4.5 hours, then add the initiator tert-amyl peroxide as 2.5% of the total amount of monomers, and the chain transfer agent as 3% of the total amount of monomers, continue to stir and keep warm 1 hour.

Embodiment 2

[0015] Add 10% glycidyl neodecanoate into the solvent of xylene and butyl acetate, blow in nitrogen, heat up to about 140°C, reflux for 10 minutes, and mix the monomer and part of the initiator solution evenly. Put it into the funnel and slowly add the mixed solution within 4.5 hours, then add the initiator tert-amyl peroxide as 2.5% of the total amount of monomers, and the chain transfer agent as 3% of the total amount of monomers, continue to stir and keep warm 1 hour.

Embodiment 3

[0017] Add 20% glycidyl neodecanoate to the solvent of xylene and butyl acetate, blow in nitrogen, heat up to about 140°C, reflux for 10 minutes, and mix the monomer and part of the initiator solution evenly. Put it into the funnel and slowly add the mixed solution within 4.5 hours, then add the initiator tert-amyl peroxide as 2.5% of the total amount of monomers, and the chain transfer agent as 3% of the total amount of monomers, continue to stir and keep warm 1 hour.

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Abstract

The invention provides a preparation method of a high-solid acrylic polyurethane coating. According to the invention, acrylic acid is adopted as a monomer; a tert-amyl peroxide is adopted as an initiator; and with a chain transfer agent and glycidyl neodecanoate, high-solid-content low-viscosity hydroxy acrylic resin is prepared. An optimal process comprises the following points: a reaction temperature is 140 DEG C; a monomer dosing time is 4.5h; the amount of the tert-amyl peroxide initiator is 2.5% of the total amount of the monomer; the amount of the chain transfer agent is 3% of the total amount of the monomer; xylene and butyl acetate are adopted as a synthetic solvent; the addition amount of glycidyl neodecanoate is 20% of the total amount of the monomer. The synthesized high-solid acrylic resin is adopted as a base material; polyurethane is prepared according to that the ratio of isocyanato content in isocyanate to hydroxy content in an N-3390 curing agent from Germany is 5:1; polyurethane is added into the base material, such that a high-solid acrylic polyurethane automotive finish paint is obtained. The method is environment-friendly, and has a low preparation cost.

Description

Technical field [0001] The present invention involves the preparation of a high -solid -linsel -split acrylic polyurethane coating, which greatly reduces production costs. The use of appropriate cause and chain rotor to improve the problem of curing acrylic lipids, which is the field of high molecular materials. Background technique [0002] The amount of coatings has developed rapidly in our country, but most of the coatings are unreasonable materials. The discharge of organic volatiles in the coatings is the main source of environmental pollution. According to statisticsThe coatings are discharged into the atmosphere. These organic volatile compounds not only destroy the earth's atmosphere and ecological environment that humans live, but also cause damage to the health of human beings.For example, coatings of acrylic resin. [0003] The present invention uses high-solid split acrylic resin as a base material, and then adds polyurethane to the medium hydroxyl content ratio of th...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D175/04C08F2/38
Inventor 李雪冬贾宇冲马俊杰
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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