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Matte varnish and preparation method thereof

A clear topcoat and topcoat technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems that the degree of crosslinking cannot be designed too high, the paint film becomes yellow and aging, and the hardness is difficult to increase, so as to achieve high hardness, Easy to spray, strong adhesion effect

Active Publication Date: 2015-10-28
广东花王涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Matt varnish is a kind of wood coating with excellent comprehensive performance, which is widely used in wood decoration. After the conventional product is mixed with paint, due to the characteristics of ordinary alkyd resin, the degree of crosslinking cannot be designed too high, and the hardness is difficult to increase. It will also become worse with the increase of hardness, and the paint film is easy to yellow and age due to the benzene ring in the curing agent. In addition to the influence of weather, climate, and use environment, it will lose light, Discoloration, aging and other disadvantages

Method used

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  • Matte varnish and preparation method thereof
  • Matte varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Cellulose acetate solution: 20% cellulose acetate, 20% methyl ethyl ketone and 60% butyl acetate;

[0031] Component A: 75% acrylic resin, 1% dispersant, 1.5% polyethylene wax slurry, 1% polyamide wax slurry, 1% leveling agent EFKA-3777, 0.2% leveling agent EFKA -3600, 0.1% defoamer, 3% methyl isobutyl ketone, 0.5% wax powder, 4.2% matting powder, 2.5% butyl acetate, 1% UV absorber, 1% Light stabilizer and 8% cellulose acetate solution;

[0032] Component B: 55% dehydrated butyl acetate and 45% HDI trimer curing agent HX-R;

[0033] Component C: 40% xylene, 25% butyl acetate, 15% propylene glycol methyl ether acetate, 10% mesitylene and 10% cyclohexanone.

[0034] Follow the steps below to prepare a matte clear finish:

[0035] 1) Preparation of cellulose acetate solution: mix cellulose acetate, methyl ethyl ketone, and butyl acetate, then disperse and stir until the fineness is ≤15um;

[0036] 2) Preparation of Component A: Select a clean dispersion cylinder that m...

Embodiment 2

[0042] Cellulose acetate solution: 20% cellulose acetate, 20% methyl ethyl ketone and 60% butyl acetate;

[0043] Component A: 85% acrylic resin, 0.6% dispersant, 1% polyethylene wax slurry, 0.5% polyamide wax slurry, 0.5% leveling agent EFKA-3777, 0.05% leveling agent EFKA -3600, 0.05% defoamer, 2% methyl isobutyl ketone, 0.3% wax powder, 2.5% matting powder, 1.5% butyl acetate, 0.5% UV absorber, 0.5% Light stabilizer and 5% cellulose acetate solution;

[0044] Component B: 50% dehydrated butyl acetate and 50% HDI trimer curing agent 3390;

[0045] Component C: 35% xylene, 20% butyl acetate, 20% propylene glycol methyl ether acetate, 15% mesitylene and 10% cyclohexanone.

[0046] Follow the steps below to prepare a matte clear finish:

[0047] 1) Preparation of cellulose acetate solution: mix cellulose acetate, methyl ethyl ketone, and butyl acetate, then disperse and stir until the fineness is ≤15um;

[0048] 2) Preparation of Component A: Select a clean dispersion cylin...

Embodiment 3

[0054] Cellulose acetate solution: 20% cellulose acetate, 20% methyl ethyl ketone and 60% butyl acetate;

[0055] Component A: 79.7% acrylic resin, 0.8% dispersant, 1.2% polyethylene wax slurry, 0.8% polyamide wax slurry, 0.8% leveling agent EFKA-3777, 0.1% leveling agent EFKA -3600, 0.1% defoamer, 2.5% methyl isobutyl ketone, 0.4% wax powder, 3% matting powder, 2% butyl acetate, 0.8% UV absorber, 0.8% Light stabilizer and 7% cellulose acetate solution;

[0056] Component B: 53% dehydrated butyl acetate and 47% HDI trimer curing agent 3390;

[0057] Component C: 39% xylene, 23% butyl acetate, 19% propylene glycol methyl ether acetate, 14% mesitylene and 5% cyclohexanone.

[0058] Follow the steps below to prepare a matte clear finish:

[0059] 1) Preparation of cellulose acetate solution: mix cellulose acetate, methyl ethyl ketone, and butyl acetate, then disperse and stir until the fineness is ≤15um;

[0060] 2) Preparation of Component A: Select a clean dispersion cylind...

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PUM

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Abstract

The invention relates to wood furniture coatings, and discloses a matte varnish with high yellowing resistance and high hardness. The matte varnish is prepared by mixing a component A, a component B and a component C in the weight ratio of 1:0.5:0.5-0.6. The component A is prepared from 75-85 wt% of acrylic resin, 0.6-1 wt% of a dispersant, 1-1.5 wt% of polyethylene wax liquor, 0.5-1% of polyamide wax liquor, 0.5-1% of a leveling agent EFKA-3777, 0.05-0.2% of a leveling agent EFKA-3600, 0.05-0.1% of an anti-foaming agent, 2-3% of methyl isobutyl ketone, 0.3-0.5% of wax powder, 2.5-4.2% of a matting agent, 1.5%-2.5% of butyl acetate, 0.5-1% of an ultraviolet light absorber, 0.5-1% of a light stabilizer and 5-8% of cellulose acetate solution; the component B is a curing agent; and the component C is a diluent. The invention also discloses a preparation method of the matte varnish. The matte varnish provided by the invention has high hardness and high yellowing resistance.

Description

technical field [0001] The invention relates to a coating for wood furniture, in particular to a high-yellowing-resistant, high-hardness matte varnish and a preparation method thereof. Background technique [0002] Modern living furniture and decorations are getting more and more attention in people's lives. With the prosperity of the furniture industry in the past 30 years of reform and opening up, the corresponding wood lacquer coatings have also been further improved. In order to better show the natural characteristics of wooden furniture such as textures and lines, the requirements for paint decoration have also been raised. There are also product requirements for the transparency, leveling, flatness, gloss and color retention of the paint film, and at the same time, the paint film is easy to be scratched and worn during furniture transportation, storage, use, and maintenance. On the other hand, new requirements have also been put forward. [0003] Matt varnish is a k...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12
Inventor 方学平杨长春
Owner 广东花王涂料有限公司
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