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Aqueous dual-component bright top finish and its preparation method

A two-component, clear topcoat technology, applied in the field of coatings, can solve the problems of poor stain resistance and chemical resistance, performance decline, no adhesion, etc., and achieve excellent stain resistance and chemical resistance, excellent gloss and appearance , easy-to-blend effect

Inactive Publication Date: 2013-08-28
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 poor pollution resistance and chemical resistance, easy yellowing, and poor antirust ability , the problem of not being able to withstand high temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. Add 70Kg of polyacrylic acid polyol, 0.1 Kg of leveling agent (Troysol LAC), 0.1 Kg of pH regulator, 0.1 Kg of defoaming agent (BYK 028 of German BYK), and film forming Auxiliary 0.1 Kg, stir evenly under stirring at 600 rpm, clean the equipment with 1.0 Kg of water and adjust the viscosity to 120KU, filter to obtain component A.

[0023] 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

[0025] a. Add 80 Kg of polyacrylic acid polyol, 0.5 Kg of leveling agent (BYK346 of Germany BYK), 0.5 Kg of pH regulator, 0.5 Kg of defoamer (BYK 028 of Germany BYK) and 0.5 Kg of film-forming aid in the stirring container. 2.0 Kg of the agent, stirred evenly under stirring at 800 rpm, cleaned the equipment with 5.0 Kg of water and adjusted the viscosity to 130KU, and filtered to obtain component A.

[0026] 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

[0028] a. Add 75Kg of polyacrylic acid polyol, 0.3 Kg of leveling agent (BYK 346 from German BYK), 0.3 Kg of pH regulator, 0.3 Kg of defoamer (Tego 902W from Tego Company) and 0.3 Kg of film-forming aid in the stirring container. 1 Kg of agent, stir under stirring at 700 rev / min, clean equipment with 3 Kg of water and adjust viscosity to 125KU, filter to obtain component A.

[0029] 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 discloses an aqueous dual-component bright top finish and its preparation method and belongs to the field of paints. The aqueous dual-component bright top finish is made from a component A and a component B, wherein the component A contains: by weight, 70-80 parts of polyacrylic acid polyol, 0.1-0.5 part of a levelling agent, 0.1-0.5 part of a pH regulator, 0.1-0.5 part of an antifoaming agent, 0.1-2.0 parts of a film-forming additive and 1.0-5.0 parts of water; the component B is anionic modified HDI polyisocyanate; and the weight ratio of the component A to the component B is 1: 0.2-0.3. The aqueous dual-component bright top finish provided by the invention has excellent luster and appearance, excellent antifouling property and chemical resistance, will not become yellow, has antirust property and high temperature resistance, and can be constructed with other paints such as 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 full-gloss varnish 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 com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 吕跃文
Owner CHENGDU BEIDA PAINT