Aqueous two-component clear paint and preparation method thereof

A two-component, clear paint technology used in coatings to solve problems such as lack of adhesion, poor stain and chemical resistance, easy yellowing, easy mixing, excellent gloss and appearance, stain resistance and chemical resistance high quality effect

Inactive Publication Date: 2012-02-29
CHENGDU BEIDA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the paint in the prior art is likely to cause paint problems such as uneven paint film, performance decline after a period of time, no adhesion, etc., and po

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] a. According to weight, add 50 parts of polyacrylic acid polyol, 0.1 part of dispersant (BYK 194 from Germany), 0.1 part of anti-sedimentation agent (Disparon LA350), and defoamer (Dego Company) into the stirring container in sequence. Tego 902W) 0.1 parts, stir evenly, slowly add 5.0 parts of pigments and fillers under stirring at 700 rpm, adjust the stirring speed to 1200 rpm and stir for 10 minutes, then add leveling agent (BYK346 from Germany) 0.1 1 part, 0.1 part of film-forming aid, stir evenly under stirring at 700 rpm, clean the equipment with 1.0 part of water and adjust the viscosity to 120KU, filter to obtain component A.

[0020] b. According to the ratio of component A: component B: water = 1:0.2:0.3, the finished product is obtained. The component B is anion-modified HDI polyisocyanate.

Embodiment 2

[0022] a. According to the weight, add 60 parts of polyacrylic acid polyol, 0.5 parts of dispersant (Tego730W of Tego Company), 0.5 parts of anti-sedimentation agent (Disparon LA350) and defoaming agent (Germany BYK) into the stirring container in sequence. BYK028) 0.5 parts and stir evenly, slowly add 10.0 parts of pigments and fillers under stirring at 700 rpm, adjust the stirring speed to 1500 rpm and stir for 15 minutes, then add 0.5 parts of leveling agent (BYK346 from Germany) in turn, 2.0 parts of membrane aid, stirred evenly under 700 rpm stirring, 5.0 parts of water to clean the equipment and adjust the viscosity to 130KU, and filter to obtain component A.

[0023] b. According to the ratio of component A: component B: water = 1:0.3:0.5, the finished product is prepared evenly, and the component B is anion-modified HDI polyisocyanate.

Embodiment 3

[0025] a. According to weight, add 55 parts of polyacrylic acid polyol, 0.3 parts of dispersant (BYK194 from BYK, Germany), 0.3 parts of anti-sedimentation agent (DISPARON LA350), and defoamer (BYK from Germany) in the stirring container. BYK028) 0.3 parts and stir evenly, slowly add 8 parts of pigments and fillers under stirring at 700 rpm, adjust the stirring speed to 1400 rpm and stir for 12 minutes, then add 0.3 parts of leveling agent (EFKA3600 from Efka Company), 1 part of film-forming aid, stirred evenly under stirring at 700 rpm, cleaned the equipment with 3 parts of water and adjusted the viscosity to 125KU, filtered to obtain component A.

[0026] b. According to the ratio of component A: component B: water = 1:0.25:0.4, the finished product is obtained. The component B is anion-modified HDI polyisocyanate.

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PUM

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Abstract

The invention which discloses an aqueous two-component clear paint and a preparation method thereof belongs to the coating field. The aqueous two-component clear paint comprises a component A and a component B, wherein the component A comprises, by weight, 50-60 parts of a polyacrylic acid polyol, 0.1-0.5 parts of a dispersant, 0.1-0.5 parts of an anti-settling agent, 0.1-0.5 parts of an antifoaming agent, 5-10 parts of a pigment and filler, 0.1-0.5 parts of a leveling agent, 0.1-2.0 parts of a film forming assistant, and 1.0-5.0 parts of water; the component B is an anion modified HDI polyisocyanate; and the weight ratio between the component A and the component B is 1:0.2-0.3. The aqueous two-component clear paint has the advantages of excellent luster and appearance, good contaminationresistance and chemical resistance, non-yellowing, antirust, high temperature resistance, and realization of simultaneous construction with other paints comprising an emulsion paint and the like.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based two-component transparent paint and a preparation method thereof. Background technique [0002] There are many kinds of coatings on the market, mainly divided into organic coatings and inorganic coatings, and organic coatings are divided into organic solvent-based coatings and organic water-based coatings according to the different solvents used. Due to the high VOC, organic solvent-based coatings cannot meet people's increasing requirements for environmental protection. [0003] Organic water-based paints, that is, water-based paints, are increasingly becoming a research hotspot. Water-based wood paints with acrylic acid as the main component are characterized by good adhesion and will not deepen the color of wood, but poor wear resistance and chemical resistance. The hardness of the film is relatively soft, the pencil test is HB, the fullness is poor, the comp...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
Inventor 吕跃文
Owner CHENGDU BEIDA PAINT
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