Water-based finish paint

A water-based topcoat and softened water technology, applied in latex paints, polyurea/polyurethane coatings, coatings, etc., can solve the problem that the hardness of the coating film, water resistance and chemical resistance are difficult to meet the high-grade water-based wood coatings, low gloss, high Eliminate problems such as oily topcoats, and achieve the effects of excellent salt spray resistance, reduced environmental pollution, and fast drying.

Inactive Publication Date: 2010-01-13
赵庆利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The finish paint for home improvement requires good weather resistance and good decorative effect to reflect the beautiful appearance of home improvement appliances, especially furniture. Among the existing water-based paints, the top coats made of acrylic resin and polyurethane resin Its gloss is lower than that of oily topcoat, and the gloss is generally only 10-20%, which cannot achieve the effect of oily topcoat
However, the existing polyurethane-acrylate composite emulsion is used as a topcoat, and the hardness, water resistance, and chemical resistance of the coating film are difficult to meet the requirements of high-grade water-based wood coatings. Therefore, it is urgent to develop a new water-based topcoat to meet the needs of the market. Requirements for topcoats in the furniture market

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The water-based finish paint that present embodiment adopts, its raw material ratio is as follows:

[0020] 50 parts of polyurethane-acrylate composite emulsion, 8 parts of nano-scale pigments, 15 parts of demineralized water and 5 parts of coalescent; also includes 0.3 parts of leveling agent, 0.4 parts of defoamer, 0.3 parts of adhesion Accelerator, 0.5 parts of dispersant.

[0021] The pigment used is titanium dioxide with a fineness of 220-250 nanometers, and the dispersant used is 5040 dispersant from Henkel Company in Germany; the defoamer is BYK-141 type defoamer, and the accelerator is ADP type attached Focus on the accelerator, the film-forming aid used is OE300, the leveling agent is BYK-306 type leveling agent, and the above raw materials can be directly purchased from the market.

[0022] Water-based finish paint provided by the present invention, its processing method is as follows:

[0023] Add demineralized water, dispersant, defoamer and film-forming a...

Embodiment 2

[0028] The finish paint that present embodiment adopts, its raw material ratio is as follows:

[0029] 45 parts of polyurethane-acrylate composite emulsion, 10 parts of nano-scale pigments, 12 parts of demineralized water and 3 parts of coalescent; also includes 0.3 parts of leveling agent, 0.4 parts of defoamer, 0.2 parts of adhesion Accelerator, 0.4 parts of dispersant.

[0030] The pigments used are iron oxide red and titanium dioxide with a fineness of 260-280 nanometers, and the dosage ratio is 3:2. The dispersant used is T-731 dispersant; the defoamer is BYK-141 type defoamer. The foaming agent and accelerator are ADP type adhesion promoter, the film-forming aid used is OE300, and the leveling agent is BYK-306 type leveling agent. The above raw materials can be directly purchased from the market.

[0031] Water-based finish paint provided by the present invention, its processing method is as follows:

[0032] Add demineralized water, dispersant, defoamer and film-formi...

Embodiment 3

[0037] The finish paint that present embodiment adopts, its raw material ratio is as follows:

[0038]35 parts of polyurethane-acrylate composite emulsion, 5 parts of nano-scale pigments, 10 parts of demineralized water and 2 parts of coalescent; also includes 0.3 parts of leveling agent, 0.4 parts of defoamer, 0.4 parts of dispersant .

[0039] The pigment used is phthalocyanine blue with a fineness of 150-180 nanometers, the dispersant used is T-731 dispersant; the film-forming aid used is OE300, and the leveling agent is BYK-306 type leveling agent Agent, above-mentioned raw material all can adopt the raw material that the market buys directly.

[0040] Water-based finish paint provided by the present invention, its processing method is as follows:

[0041] Add demineralized water, dispersant, defoamer and film-forming aid to the disperser according to the formula ratio, start stirring for 5-10 minutes, and the speed is 300-350 rpm;

[0042] Add polyurethane-acrylate com...

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Abstract

The invention provides a finish paint, in particular to a water-based finish paint which mainly comprises polyurethane-acrylic ester composite emulsion, nano pigment, film forming auxiliary agent and other necessary components. The water-based finish paint adopting the components overcomes the defects of the polyurethane-acrylic ester composite emulsion in the aspects of hardness of film coating, water resisting property and chemicals resistant performance, thus meeting the requirements of high quality water-based carpentry paint; in addition, the finish paint adopts water as solvent, so as to have no environmental pollution, be harmless to the health of construction personnel, and be safe and convenient for use; furthermore, the common spraying way is adopted, and the water-based finish paint is also applicable to airless spraying and has the advantages of high construction efficiency as well as no sagging and cracking, so as to widely replace oil-base finish paint for the surface coating of other objects.

Description

technical field [0001] The invention relates to a polyurethane-acrylate composite coating, in particular to a water-based topcoat using polyurethane-acrylate composite emulsion as a base material. Background technique [0002] In the current household industry, the external painting of various household items is a very important process, especially for some furniture items that are in contact with the human body for a long time, the surface spraying is an indispensable process. Spray paint coatings are mostly solvent-based coatings. Common varieties include epoxy resin, chlorinated rubber, acrylic acid, polyurethane, etc., which contain a large amount of organic solvents. These solvents are harmful to the health of spraying personnel and pollute the environment, and the cost is high. At the same time, due to the volatility of organic solvents, various organic solvents will be released slowly during household use, which is extremely harmful to the health of users. Foreign cou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D5/02
Inventor 赵庆利
Owner 赵庆利
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