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Aqueous mono-component matte varnish and preparation method thereof

A one-component, clear topcoat technology, applied in the field of coatings, can solve problems such as poor compatibility, easy damage to emulsions, poor wood wettability, etc., and achieve excellent mechanical properties, pollution resistance and chemical resistance. The effect of excellent gloss and appearance

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

[0004] The technical problem to be solved by the present invention is that the water-based paint in the prior art has poor wettability to wood, and the compatibility with other water-based paints is often not good, and the emulsion is easily destroyed under high-speed stirring.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] By weight, add 40 parts of water-based polyurethane dispersion (Obaodi AC 2514), 20 parts of polyacrylic acid modified polyurethane (Obaodi MAC 34), and wetting agent (NOPCO SN) to the container at a stirring speed of 600r / min. 990) 0.1 part, thickener (Rohm and Haas RM 2020) 1.0 part, defoamer (BYK BYK 028) 0.1 part, after stirring evenly, slowly add 2.0 parts of matting agent (Grace ED40), adjust the stirring speed to 1200r / min, disperse until the fineness is ≤30um, then add 0.1 part of leveling agent (BYK 346) and 0.1 part of film-forming aid (Eastman alcohol ester-12) in sequence, and then adjust the stirring speed to 600r / min, stir evenly, clean the equipment with 1.0 parts of water, adjust the viscosity to 120KU, and filter to obtain the finished product.

Embodiment 2

[0015] By weight, add 50 parts of water-based polyurethane dispersion (Obaodi AC 2514), 30 parts of polyacrylic acid modified polyurethane (Obaodi MAC 34), wetting agent (Bike BYK 194) 0.5 parts, thickener (NOPCO SN612) 2.0 parts, defoamer (Tego 902W) 0.5 parts, after stirring evenly, slowly add 8.0 parts of matting agent (Grace ED40), and adjust the stirring speed to 1500r / min, Disperse until the fineness is ≤30um, then add 0.5 parts of leveling agent (Tego 410) and 2.0 parts of film-forming aid (Eastman alcohol ester-12) in sequence, then adjust the stirring speed to 800r / min, stir evenly, and use water 5.0 parts to clean the equipment, adjust the viscosity to 130KU, and filter to obtain the finished product.

Embodiment 3

[0017] By weight, add 45 parts of water-based polyurethane dispersion (Obaodi AC 2514), 25 parts of polyacrylic acid modified polyurethane (Obaodi MAC 34), wetting agent (Bike BYK 194) 0.3 parts, thickener (Rohm and Haas RM 2020) 1.5 parts, defoamer (NOPCO SN 1370) 0.3 parts, after stirring evenly, slowly add 5 parts of matting agent (Grace ED40), adjust the stirring speed to 1400r / min, disperse until the fineness is ≤30um, then add 0.3 parts of leveling agent (Tego 410) and 1 part of film-forming aid (Eastman alcohol ester-12) in sequence, and then adjust the stirring speed to 700r / min , stir evenly, wash the equipment with 3 parts of water, adjust the viscosity to 125KU, and filter to obtain the finished product.

[0018]

[0019] Table 1 Product performance comparison of each embodiment:

[0020] Test items Solvent type Example 1 Example 2 Example 3 Appearance of paint film smooth smooth smooth smooth Environmental protection Conta...

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PUM

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Abstract

The invention discloses an aqueous mono-component matte varnish and a preparation method thereof. The invention belongs to the field of paints. The varnish comprises components of, by weight: 40 to 50 parts of an aqueous polyurethane dispersion, 20 to 30 parts of polyacrylic acid modified polyurethane, 0.1 to 0.5 parts of a moistening agent, 1.0 to 2.0 parts of a thickening agent, 0.1 to 0.5 parts of an antifoaming agent, 2.0 to 8.0 parts of a dulling agent, 0.1 to 0.5 parts of a leveling agent, 0.1 to 2.0 parts of a film forming auxiliary agent, and 1.0 to 5.0 parts of water. The varnish provided by the invention has excellent luster, appearance, fouling resistance, chemical resistance, and mechanical properties. The varnish can be applied in construction in combination with other paints such as emulsion paint. The application of the varnish is easy and diverse.

Description

technical field [0001] The invention belongs to the field of coatings, and in particular relates to a water-based one-component matting clear finish 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 coatings, that is, water-based coatings, are now increasingly becoming a research hotspot. Conventional water-based paints have poor wettability to wood, and are often not compatible with other water-based paints. The emulsion is easily destroyed under high-speed stirring. Contents of the invention [0004] The technical problem to be solved by the presen...

Claims

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Application Information

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