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Polyurethane paint and preparation method thereof

A polyurethane and paint technology, applied in polyurea/polyurethane coatings, polyester coatings, coatings, etc., can solve problems such as poor yellowing resistance, achieve good yellowing resistance, strong climate adaptability, and bright paint film Effect

Inactive Publication Date: 2019-03-05
王国强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Currently commercially available polyurethane paints mainly have the following disadvantages: foaming when exposed to moisture, pulverization of the paint film, and poor yellowing resistance

Method used

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  • Polyurethane paint and preparation method thereof
  • Polyurethane paint and preparation method thereof
  • Polyurethane paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Described polyurethane paint is made from the raw materials of following parts by weight:

[0026]

[0027] The thickener is hydroxypropylmethylcellulose and hydroxyethylcellulose, and the mass ratio is 2:1.

[0028] The silicone leveling agent is BYK-310.

[0029] Its preparation method is as follows:

[0030] (1) Add butyl formate and glycerin to the reaction kettle, add polyurethane, alkyd resin and acrylic resin, adjust the stirring speed to 650r / min, and stir for 4min;

[0031] (2) Add dibutyl hydroxytoluene, octylphenol polyoxyethylene ether, thickener, and leveling agent, adjust the rotation speed to 1100r / min, and stir for 13 minutes to obtain the product.

Embodiment 2

[0033] Described polyurethane paint is made from the raw materials of following parts by weight:

[0034]

[0035] The thickener is hydroxypropylmethylcellulose and hydroxyethylcellulose, and the mass ratio is 2:1.

[0036] The silicone leveling agent is BYK-310.

[0037] Its preparation method is as follows:

[0038] (1) Add butyl formate and glycerin to the reaction kettle, add polyurethane, alkyd resin and acrylic resin, adjust the stirring speed to 500r / min, and stir for 3min;

[0039] (2) Add dibutyl hydroxytoluene, octylphenol polyoxyethylene ether, thickener and leveling agent, adjust the rotation speed to 1000r / min, and stir for 10min to obtain the product.

Embodiment 3

[0041] Described polyurethane paint is made from the raw materials of following parts by weight:

[0042]

[0043]

[0044] The thickener is hydroxypropylmethylcellulose and hydroxyethylcellulose, and the mass ratio is 2:1.

[0045] The silicone leveling agent is BYK-310.

[0046] Its preparation method is as follows:

[0047] (1) Add butyl formate and glycerin to the reaction kettle, add polyurethane, alkyd resin and acrylic resin, adjust the stirring speed to 800r / min, and stir for 5min;

[0048] (2) Add dibutyl hydroxytoluene, octylphenol polyoxyethylene ether, thickener, and leveling agent, adjust the rotation speed to 1200r / min, and stir for 15 minutes to obtain the product.

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Abstract

The invention relates to polyurethane paint, and specifically relates to the polyurethane paint and a preparation method thereof. The polyurethane paint is prepared from, by weight, the following rawmaterials: 10-30 parts of polyurethane, 30-50 parts of alkyd resin, 5-10 parts of butyl formate, 5-10 parts of acrylic resin, 10-20 parts of glycerol, 0.5-1 part of an antioxidant, 0.5-2 parts of a defoaming agent, 0.5-2 parts of a thickening agent, and 0.1-0.5 part of a levelling agent. The components of the paint are synergistic to overcome the problem that traditional polyurethane paint is blistered by wetting, is subjected to paint film efflorescence, and is poor in yellowing resistance performance; the prepared polyurethane paint has strong climate adaptability, is not blistered by wetting, is bright in paint film, is good in yellowing resistance performance, is hard and wear resistant, and is not easy to be subjected to efflorescence; and the preparation method is simple and easy toimplement.

Description

technical field [0001] The invention relates to a polyurethane paint, in particular to a polyurethane paint and a preparation method thereof. Background technique [0002] Polyurethane paint is polyurethane paint. It has strong paint film, full luster, strong adhesion, water resistance, wear resistance and corrosion resistance. It is widely used in high-grade wooden furniture and can also be used on metal surfaces. [0003] Polyurethane paint is divided into one-component and two-component. [0004] The characteristics of one-component polyurethane paint: oil-modified polyurethane paint has the advantages of stable storage, fast drying of the paint film after coating, good wear resistance, alkali resistance, oil resistance and solvent resistance, but poor weather resistance, which is not suitable for outdoor use. Moisture-curing polyurethane paint has the functions of fast drying, good adhesion, wear resistance, water resistance, moisture resistance, and acid and alkali m...

Claims

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Application Information

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IPC IPC(8): C09D167/08C09D175/04C09D133/00C09D7/63
CPCC09D167/08C08L2201/08C08L2205/025C08L2205/035C08L75/04C08L33/00C08L71/02C08L1/284C08K5/053
Inventor 王国强
Owner 王国强
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