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High-hardness and easy-to-polish water-based clear primer and preparation method thereof

A clear primer, high hardness technology, applied in primers, coatings, polyurea/polyurethane coatings, etc., to achieve strong construction, improve low-temperature film-forming performance, and good transparency

Inactive Publication Date: 2020-02-14
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that existing water-based clear primers cannot have three properties of high hardness, easy sanding and high transparency, the present invention provides a water-based clear primer with high hardness and easy sanding and a preparation method thereof

Method used

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  • High-hardness and easy-to-polish water-based clear primer and preparation method thereof
  • High-hardness and easy-to-polish water-based clear primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A water-based clear primer with high hardness and easy sanding, including A component and B component;

[0032] Described A component comprises the component of following mass percentage:

[0033] 50% waterborne polyurethane resin, 30% hydroxyl-self-crosslinking acrylic resin, 4% coalescent, 0.6% defoamer, 0.3% wetting and leveling agent, 4% zinc stearate, 0.2% thickener and 10.9% deionized water;

[0034] Described B component comprises the component of following mass percentage:

[0035] 75% water-dispersible polyisocyanate and 25% hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate;

[0036] The mass proportion of the A component and the B component is 8:1.

[0037] Among them, the water-based polyurethane resin is U9900 from Oubaodi; the hydroxyl-self-crosslinking acrylic resin is AC192 from Stahl; the film-forming aid is dipropylene glycol methyl ether; the defoamer is BYK-028 from BYK; Tego-280 is selected as the agent; 2025 thickener is s...

Embodiment 2

[0044] A water-based clear primer with high hardness and easy sanding, including A component and B component;

[0045] Described A component comprises the component of following mass percentage:

[0046] 55% water-based polyurethane resin, 25% hydroxyl-self-crosslinking acrylic resin, 5% coalescent, 0.5% defoamer, 0.4% wetting and leveling agent, 3% zinc stearate, 0.3% thickener and 10.8% deionized water;

[0047] Described B component comprises the component of following mass percentage:

[0048] 80% water-dispersible polyisocyanate and 20% hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate;

[0049] The mass proportion of the A component and the B component is 9:1.

[0050] Among them, Ou Baodi's U9900 is used for water-based polyurethane resin; Stahl's AC192 is used for hydroxyl-self-crosslinking acrylic resin; Dipropylene glycol butyl ether is used as a film-forming aid; Tego-410 is selected as the agent; 8W thickener is selected as the thickener;...

Embodiment 3

[0057] A water-based clear primer with high hardness and easy sanding, including A component and B component;

[0058] Described A component comprises the component of following mass percentage:

[0059] 60% waterborne polyurethane resin, 20% hydroxyl-self-crosslinking acrylic resin, 6% coalescent, 0.4% defoamer, 0.5% wetting and leveling agent, 2% zinc stearate, 0.2% thickener and 10.9% deionized water;

[0060] Described B component comprises the component of following mass percentage:

[0061] 85% water-dispersible polyisocyanate and 15% hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate;

[0062] The mass proportion of the A component and the B component is 10:1.

[0063] Among them, the water-based polyurethane resin is U9900 from Oubaodi; the hydroxyl-self-crosslinking acrylic resin is AC192 from Stahl; the film-forming aid is composed of alcohol ester dodeca and dipropylene glycol butyl ether with a mass ratio of 1:2; defoaming The agent is BYK...

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Abstract

The invention relates to the technical field of coatings, and particularly discloses a high-hardness and easy-to-polish water-based clear primer and a preparation method thereof. The water-based clearprimer comprises a component A and a component B, wherein the component A comprises the following components by the mass percentage: 50-60% of water-based polyurethane resin, 20-30% of hydroxyl-self-crosslinked acrylic resin, 4-6% of a coalescing agent, 0.4-0.6% of an antifoaming agent, 0.3-0.5% of a wetting leveling agent, 2-4% of a polishing auxiliary agent, 0.2-0.3% of a thickening agent and the balance being deionized water. The component B comprises the following components by the mass percentage: 75-85% of water dispersible polyisocyanate and the balance being hydrophilic aliphatic polyisocyanate based on hexamethylene diisocyanate. The mass ratio of the component A to the component B is (8-10):1. The water-based clear primer disclosed by the invention has the properties of high hardness, easiness in polishing, good permeability and difficulty in yellowing and aging.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-hardness, easy-to-polish water-based clear primer and a preparation method thereof. Background technique [0002] Water-based primer paint is a kind of paint with water as the dispersion medium. It has the advantages of non-combustibility, non-toxicity, no pollution to the environment, energy saving, etc., and has a broad market prospect. However, due to the low hardness, poor resistance, and high price of traditional water-based clear primer coatings for wood, it is difficult to popularize and apply them on a large scale, especially in harsh environments, and the traditional one-component clear primer Due to problems such as low hardness and poor sandability, when it is applied to large-scale furniture coating, problems such as dull paint film, insufficient fullness and poor adhesion often occur, which directly lead to increased construction costs. Ordinary water-based p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D133/00C09D7/63C09D5/00
CPCC08L2201/10C08L2205/025C08L2205/035C09D5/002C09D7/63C09D175/04C08L33/00C08L83/04C08L83/12C08L75/04C08K5/098
Inventor 张赛东李璠闫会玲
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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