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An environment-friendly two-component intermediate paint for vehicles

An environmentally friendly, two-component technology, used in coatings, anti-corrosion coatings, etc., can solve problems such as high VOC emissions and inability to meet environmental protection requirements, and achieve good hiding power, reduced construction VOC, and good sandability.

Active Publication Date: 2020-04-17
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem that the existing two-component intermediate paint for vehicles has high VOC emissions during the construction process and cannot meet the environmental protection requirements under the current new situation, the present invention provides an environmentally friendly two-component intermediate paint for vehicles. The construction VOC of the invented two-component medium paint for vehicles is less than 420g / L, which meets the national environmental protection requirements for oil-based paints

Method used

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  • An environment-friendly two-component intermediate paint for vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]An environment-friendly two-component intermediate paint for vehicles, which is composed of a main paint, a curing agent and a diluent, and the main paint is composed of the following components in parts by weight: 32 parts of hydroxyl acrylic resin, 2 parts of hydroxyl polyester resin, 3 parts of epoxy resin, 0.7 parts of wetting and dispersing agent, 0.4 parts of leveling agent, 21 parts of titanium dioxide, 16 parts of talc powder, 6.5 parts of 2500 mesh precipitated barium sulfate, 8 parts of zinc phosphate, 0.5 parts of anti-settling thixotropic agent, 0.05 parts of catalyst, 10 parts of solvent, wherein the solvent includes: 4 parts of butyl acetate, 4 parts of PMA, 2 parts of trimethylbenzene, the curing agent is a mixture of 80 parts of HDI trimer polyisocyanate curing agent and 20 parts of butyl acetate, diluted Agents include: 25 parts of butyl acetate, 50 parts of xylene, 5 parts of DBE, and 20 parts of PMA.

[0047] Wherein, the hydroxyl value of the hydroxy ...

Embodiment 2

[0057] In the present embodiment, an environment-friendly two-component intermediate paint for vehicles is composed of main paint, curing agent and diluent, and the main paint is composed of the following components in parts by weight: 35 parts of hydroxyl acrylic resin, hydroxyl polyester 1 part of resin, 1 part of epoxy resin, 0.3 parts of wetting and dispersing agent, 0.7 parts of leveling agent, 30 parts of titanium dioxide, 12 parts of talc powder, 7 parts of 2500 mesh precipitated barium sulfate, 4 parts of zinc phosphate, anti-settling thixotropy 0.4 parts of agent, 0.05 parts of catalyst, solvents include: 4 parts of butyl acetate, 4 parts of PMA, 2 parts of trimethylbenzene, take 9 parts of the mixture, curing agent is 75 parts of HDI trimer polyisocyanate curing agent, butyl acetate 25 parts of the mixture, diluents include: 25 parts of butyl acetate, 50 parts of xylene, 5 parts of DBE, 20 parts of PMA.

[0058] Wherein, the hydroxyl value of the hydroxy acrylic resi...

Embodiment 3

[0061] In the present embodiment, an environment-friendly two-component intermediate paint for vehicles is composed of main paint, curing agent and diluent, and the main paint is composed of the following components in parts by weight: 30 parts of hydroxyl acrylic resin, hydroxyl polyester 1 part of resin, 2 parts of epoxy resin, 0.5 part of wetting and dispersing agent, 0.5 part of leveling agent, 25 parts of titanium dioxide, 15 parts of talc powder, 8 parts of 2500 mesh precipitated barium sulfate, 6 parts of zinc phosphate, anti-settling thixotropy 0.3 parts of agent, 0.04 parts of catalyst, solvent includes: 8 parts of butyl acetate, 8 parts of PMA, 4 parts of trimethylbenzene, take 12 parts in the mixture, curing agent is 78 parts of HDI trimer polyisocyanate curing agent, butyl acetate A mixture of 22 parts, diluents include: 25 parts of butyl acetate, 50 parts of xylene, 5 parts of DBE, 20 parts of PMA.

[0062] Wherein, the hydroxyl value of the hydroxy acrylic resin ...

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Abstract

The invention provides an eco-friendly two-component intermediate coating for vehicles. The coating comprises a main coating, which comprises the following components, by weight part, 25-35 parts of an acrylic resin, 1-3 parts of a hydroxyl polyester resin, 1-3 parts of an epoxy resin, 0.3-0.7 part of a wetting dispersant, 0.3-0.7 part of a levelling agent, 20-30 parts of titanium dioxide, 12-17 parts of talcum powder, 6-10 parts of 2500-mesh precipitated barium sulfate, 4-8 parts of zinc phosphate, 0.3-0.6 part of an anti-settling thixotropic agent, 0.03-0.05 part of a catalyst, and 9-13 parts of a solvent. In the two-component intermediate coating, high-solid low-viscosity hydroxyl acrylic resin, polyester resin and epoxy resin are adopted in the main coating, are compounded with multiple auxiliary agents and powder, and matches a high-solid low-viscosity curing agent. On the basis of meeting general performance (such as adhesion force, impact resistance, and acid resistance), compared with a common two-component intermediate coating for vehicles, the coating has construction VOC less than 420 g / L and meets the eco-friendly requirement to oil coating in regulations and policies at the present.

Description

technical field [0001] The invention belongs to the technical field of automotive coatings, in particular to an environment-friendly two-component intermediate coating for vehicles. Background technique [0002] There are three main categories of environmentally friendly automotive coatings: coatings that do not contain heavy metals such as lead and chromium, high-solids coatings or low organic volatile (VOC) coatings (VOC content ≤ 420g / L), and water-based coatings. At present, water-based coatings are widely used in various fields as the most environmentally friendly coatings. However, in the field of automotive coatings that require high mechanical resistance, physical and chemical resistance, and construction performance, solvent-based coatings have their unique mechanical resistance. Advantages of resistance to physical and chemical properties. In order to meet the increasing awareness of environmental protection, high-solid automotive coatings, which are also environm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/14C09D5/08C09D7/20C09D7/45C09D7/47C09D7/61
CPCC08K2003/2241C08K2003/3045C08K2003/321C08L2205/02C08L2205/035C09D5/08C09D133/14C08L67/00C08L63/00C08L33/00C08L53/00C08K3/00C08K3/30C08K3/22C08K3/34C08K3/32C08K3/36
Inventor 王一昂任岳辉刘晓裴魏永超
Owner ZHENGZHOU YUTONG BUS CO LTD
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