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Two-component coating compositions and articles made therefrom

A composition, two-component technology, used in polyurea/polyurethane coatings, devices for coating liquids on surfaces, coatings, etc., which can solve the problems of complicated and cumbersome coating processes

Active Publication Date: 2022-07-22
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, the coating process of wood products is very complicated and cumbersome

Method used

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  • Two-component coating compositions and articles made therefrom

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049]The preparation of the resin composition of the present invention can be accomplished by any suitable mixing method known to those of ordinary skill in the art. For example, the resin composition can be prepared by adding an alcoholic solution of an alcohol-soluble acrylic resin, an aqueous dispersion of a water-dispersible hydroxy-functional acrylic resin, an alcoholic solvent, and a cosolvent to a vessel, and then adding the resulting mixture to a vessel. Stir well.

[0050] Hardener

[0051] The two-component coating compositions according to the invention comprise polyisocyanates as curing agents. The term "polyisocyanate" as used herein refers to polyisocyanate compounds, polyisocyanate oligomers, or combinations thereof, which contain two or more isocyanate functional groups (NCOs) capable of chain extension and crosslinking reactions with active hydrogens, thereby A three-dimensional network structure is formed.

[0052] The inventors of the present invention...

Embodiment

[0079] testing method:

[0080] Usable time: Mix the two components of the two-component coating composition of the present invention, and then stand at room temperature of 35±1°C, and measure the time it takes for the viscosity of the system to reach 2 times the initial viscosity.

[0081] Adhesion: measured according to GB / T9286-1998. The grid spacing is 2mm.

[0082] Raw materials:

[0083] Resin 1: alcohol solution of alcohol-soluble acrylic resin, weight average molecular weight 96,000, solid content 41%, pH value 8.5-9.5, solvent: isopropanol.

[0084] Resin 2: Aqueous dispersion of a water-dispersible hydroxy-functional acrylic resin, weight average molecular weight 16,600, milky white, 45% solids, pH 7-8, solvent: water.

[0085] Cosolvent: propylene glycol methyl ether, diethylene glycol butyl ether, dipropylene glycol methyl ether.

[0086] Curing agent 1: water-dispersible polyether-modified HDI (solid content 80%, NCO%=14%).

[0087] Curing agent 2: water-...

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PUM

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Abstract

The present application relates to a two-component coating composition and articles made therefrom. The two-component coating composition comprises: a) a resin composition comprising an alcohol-soluble acrylic resin, a water-dispersible hydroxy-functional acrylic resin, an alcohol-based solvent and optional additional additives, the resin composition being Homogeneous steady state; b) curing agents, including polyisocyanates. The above-mentioned two-component coating composition of the present application can be used as a sealing primer to achieve a good sealing effect, and can also be used as a color correction agent after adding a colorant to provide a good color correction effect.

Description

technical field [0001] The present invention relates to a two-component coating composition, more particularly to a two-component coating composition suitable for use as a sealer primer or a main agent of a color-correcting agent, and products made therefrom. Background technique [0002] With the gradual improvement of people's living standards, home decoration is developing towards a more comfortable, fashionable and personalized direction. Wood products, especially solid wood furniture, have incomparable advantages in aesthetics and environmental protection, so the demand in the home improvement market is growing. [0003] As we all know, the painting process of wood products is very complicated and cumbersome. For example, a fully closed color coating process for wood products usually includes the following steps: treatment of the substrate, base color, seal primer, primer color, primer, finish color, top coat finish. Considering the role of each coating in wood coatin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D5/00C08G18/62B05D7/06B05D7/02B05D7/14B05D7/24
CPCC09D175/04C09D5/002C08G18/6216B05D7/06B05D7/02B05D7/14B05D7/24
Inventor 陈红杨伟范贵军
Owner GUANGDONG HUARUN PAINT CO LTD