High-gloss water-based two-component finish paint as well as preparation method and application thereof

A high-gloss, two-component technology, used in coatings, polyurea/polyurethane coatings, etc., can solve problems such as compatibility between hydroxy acrylic resin and polyisocyanate, and achieve excellent adhesion performance, high hardness, Good leveling effect

Active Publication Date: 2022-07-12
GUANGDONG YATU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the technical solution disclosed in the above-mentioned patent application does not solve the compatibility problem between hydroxyl acrylic resin and polyisocyanate

Method used

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  • High-gloss water-based two-component finish paint as well as preparation method and application thereof
  • High-gloss water-based two-component finish paint as well as preparation method and application thereof
  • High-gloss water-based two-component finish paint as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Example 1 Preparation method of 1# water-based hydroxyacrylic acid dispersion

[0055] The 1# water-based hydroxyacrylic acid dispersion includes the following raw materials by weight: 14 parts of styrene, 20 parts of methyl methacrylate, 12 parts of isobornyl acrylate, 11 parts of glycidyl tertiary carbonate, and 13 parts of butyl acrylate , 11 parts of hydroxyethyl methacrylate, 2 parts of acrylic acid, 3 parts of ethylene diamine, 10 parts of propylene glycol butyl ether, 4 parts of ethylene glycol butyl ether, and 96 parts of deionized water.

[0056] A: Resin synthesis process:

[0057] Step A1: Monomer premixing: all methyl methacrylate, isobornyl acrylate, 54% styrene, 20% butyl acrylate, 40% hydroxyethyl methacrylate, 15% acrylic acid, 1.9% initiator Add it into the mixing tank, stir evenly, and obtain component E; 23% styrene, 45% butyl acrylate, 60% hydroxyethyl methacrylate, 35% glycidyl tertiary carbonate, 45% acrylic acid, 2.3% initiator Add 23% styrene, ...

Embodiment 2

[0072] Example 2 Preparation method of 1# water-based hydroxyacrylic acid dispersion

[0073] The 1# water-based hydroxyacrylic acid dispersion includes the following raw materials by weight: 8 parts of styrene, 15 parts of methyl methacrylate, 5 parts of isobornyl acrylate, 5 parts of glycidyl tertiary carbonate, and 5 parts of butyl acrylate , 5 parts of hydroxyethyl methacrylate, 1 part of acrylic acid, 2 parts of ethylene diamine, 5 parts of propylene glycol butyl ether, and 96 parts of deionized water.

[0074] The preparation method is similar to Example 1. Wherein, the co-solvent in the component D is 50% propylene glycol butyl ether; in the step A2, the co-solvent is propylene glycol butyl ether.

Embodiment 3

[0075] Example 3 Preparation method of 1# water-based hydroxyacrylic acid dispersion

[0076] The 1# water-based hydroxyacrylic acid dispersion includes the following raw materials by weight: 20 parts of styrene, 25 parts of methyl methacrylate, 20 parts of isobornyl acrylate, 20 parts of glycidyl tertiary carbonate, and 30 parts of butyl acrylate , 20 parts of hydroxyethyl methacrylate, 10 parts of acrylic acid, 5 parts of ethylene diamine, 5 parts of trimethylbenzene and 10 parts of propylene glycol methyl ether, and 96 parts of deionized water.

[0077] The preparation method is similar to Example 1. Wherein, the cosolvent in the component D is 50% trimethylbenzene and 50% propylene glycol methyl ether; in the step A2, the cosolvent is 50% trimethylbenzene and 50% propylene glycol methyl ether.

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Abstract

The invention belongs to the field of organic polymer coatings, and particularly relates to a high-gloss water-based two-component finishing coat as well as a preparation method and application thereof. In the high-gloss water-based two-component finish paint, a component A comprises the following components in parts by weight: 15-40 parts of a 1 # water-based hydroxyl acrylic acid dispersion, 10-25 parts of a 2 # water-based hydroxyl acrylic acid dispersion, 1-5 parts of DPM, 1-5 parts of DPNB, 1-5 parts of trimethylbenzene, 0.1-1 part of a wetting agent, 0.1-1 part of a flatting agent, 10-30 parts of water-based color paste, 1-26.7 parts of deionized water, 0.2-1 part of a defoaming agent, 0.5-1 part of an anti-aging agent and 0.5-2 parts of a rheological agent; and the component B comprises the following components in parts by weight: 40-60 parts of PGDA and 40-60 parts of a water-based isocyanate curing agent. The water-based high-gloss two-component finish paint prepared by the invention has the advantages of good leveling property, good clarity, no particles, smooth surface and gloss superior to that required by the national standard.

Description

technical field [0001] The invention belongs to the field of organic polymer coatings, in particular to a high-gloss water-based two-component topcoat and a preparation method and application thereof. Background technique [0002] The water-based paint uses water as the diluent, does not contain organic solvents and free TDI, and has excellent fire resistance. Its toxicity and combustion smoke density meet the BS6853 standard, and it is an environmentally friendly paint that is harmless to the human body. The coatings used on large vehicles need to have a strong protective effect, including: excellent adhesion; excellent salt spray resistance; excellent acid and alkali resistance; excellent water resistance; And tough; excellent low viscosity anti-settling. For the coatings used on large vehicles, the pros and cons of the adhesion between each layer of coatings and between the coatings and the substrate will directly affect the protection performance and service life of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C08F220/14C08F212/08C08F220/18C08F218/00C08F220/20C08F220/06
CPCC09D175/04C08F220/14C08F220/1804C08F212/08C08F220/1811C08F218/24C08F220/20C08F220/06
Inventor 冯兆均江瀚黄劼李柏文伍祺卓
Owner GUANGDONG YATU CHEM
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