Polyurethane seal coat

A sealing primer and polyurethane technology, applied in polyurea/polyurethane coatings, coatings, etc., can solve the problems of non-absorption, etc., and achieve the effects of improving adhesion, preventing moisture absorption and mold, and excellent sealing

Inactive Publication Date: 2009-12-23
HUIZHOU CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating has anti-corrosion effect, but it does not have the function of absorbing harmful substances such as formaldehyde

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A polyurethane sealing primer, in parts by weight: 35% of alkyd resin, 18% of cerium hydrogen phosphate, 1-10% of cellulose acetate, 0.01-2% of triethanolamine, and 20-50% of butyl acetate. Put the alkyd resin into the paint-making container according to the formula ratio, add cerium hydrogen phosphate and cellulose acetate, which are materials for absorbing and fixing formaldehyde, while stirring, and then add triethanolamine and butyl acetate while stirring, and mix well to obtain the primer . Applying this primer to furniture coating can effectively prevent the foundation from absorbing moisture and getting moldy. The formaldehyde in the base material is released slowly and is also removed, which will not cause harm to the human body. At the same time, the sealing primer also has the effect of a conventional sealing primer, without adding product varieties and construction steps, and is very simple and easy to use.

Embodiment 2

[0013] A polyurethane sealing primer, by weight: 37% of acrylic resin, 15% of titanium oxide nanotubes, 1-10% of cellulose acetate, 0.01-2% of polyethylene polyamine, and 20-50% of ethanol. Put the acrylic resin into the paint-making container according to the formula ratio, add titanium oxide nanotubes and cellulose acetate, materials that absorb and fix formaldehyde while stirring, and then add polyethylene polyamine and ethanol while stirring, and mix well to obtain the base paint. Applying this primer to furniture coating can effectively prevent the foundation from absorbing moisture and getting moldy. The formaldehyde in the base material is released slowly and is also removed, which will not cause harm to the human body. At the same time, the sealing primer also has the effect of a conventional sealing primer, without adding product varieties and construction steps, and is very simple and easy to use.

Embodiment 3

[0015] A polyurethane sealing primer, by weight: 40% alkyd resin, 12% cerium hydrogen phosphate, 1-10% cellulose acetate, 0.01-2% polyamine-ethylene-vinyl acetate copolymer, ethyl acetate 20-50%. Put the alkyd resin into the paint-making container according to the formula ratio, add cerium hydrogen phosphate and cellulose acetate, which are materials for absorbing and fixing formaldehyde, while stirring, and then add polyamine-ethylene-vinyl acetate copolymer, ethyl acetate while stirring After mixing evenly, the primer is obtained. Applying this primer to furniture coating can effectively prevent the foundation from absorbing moisture and getting moldy. The formaldehyde in the base material is released slowly and is also removed, which will not cause harm to the human body. At the same time, the sealing primer also has the effect of a conventional sealing primer, without adding product varieties and construction steps, and is very simple and easy to use.

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PUM

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Abstract

The invention discloses a polyurethane seal coat comprising the following components in percentage by weight: 30-50 percent of modified fatty acid ester, 5-20 percent of material for absorbing and fixing formaldehyde, 1-10 percent of cellulose acetate, 0.01-2 percent of addition agent and 20-50 percent of solvent. The modified fatty acid ester is alkyd and/or acrylics. The polyurethane seal coat is applied to coating furniture, has seal effect and can effectively prevent base material from absorbing moisture and going moldy. The formaldehyde in the base material releases slowly and is also removed, thereby having no damage to human bodies. Meanwhile, the seal coat also has the effects of a common seal coat and is very simple and applicable without adding product varieties and construction steps.

Description

technical field [0001] The invention relates to a coating in the field of polyurethane, in particular to a polyurethane sealing primer. Background technique [0002] PU sealing primer is gradually being used in furniture coating, but it is often only used to solve some construction performances, and basically has no functionality. In order to make the coated material have anti-corrosion and moisture-proof functions, people have to apply another layer of anti-corrosion Moisture-proof coatings will increase the construction process as a result, and may also cause incompatibility of multi-layer coatings, resulting in "smearing" phenomenon. In addition, the existing primer cannot absorb harmful substances such as formaldehyde often contained in composite wood. Chinese patent application CN101402822 discloses a normal-temperature self-drying cationic environment-friendly water-based epoxy-polyurethane anticorrosion primer system, which can be prepared by adding water to a curing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D175/06C09D7/12
Inventor 练世斌
Owner HUIZHOU CHANGRUNFA PAINT
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