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Environmental-friendly waterborne polyurethane coating

A technology of water-based polyurethane and polyurethane emulsion, which is applied in polyurea/polyurethane coatings, anti-fouling/underwater coatings, coatings, etc., and can solve fire hazards, environmental and human health hazards, and poor tear resistance in production and construction sites. problems, to achieve the effect of good environmental protection function, excellent stain resistance, and excellent film-forming performance

Inactive Publication Date: 2019-02-22
含山县领创新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, because oil-based paint itself contains solvents, it must be diluted with a large amount of organic solvents containing benzene, alcohols, esters or ketones, which is very harmful to environmental pollution and human health, and is a flammable and explosive product. There are fire hazards in production and construction sites. With the improvement of people's quality of life, the demand for water-based coatings is increasing. However, although water-based coatings are environmentally friendly, they have low hardness and poor tear resistance after curing.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An environmentally friendly water-based polyurethane coating, which is made of the following components in parts by weight: tetrasilanol sodium salt modified polyurethane emulsion 93, nanometer calcium carbonate 18, diatom mud 35, hollow glass microspheres 5.2, potassium trimethylsiliconate 0.12, vinyl tertiary carbonate 3, inorganic salt powder 1.8, wetting agent 0.6, defoamer 0.5, dispersant 0.5, thickener 0.5.

[0019] Further, the preparation method of the tetrasilanol sodium salt modified polyurethane emulsion is:

[0020] (1) Dissolve silane, sodium hydroxide, and deionized water in an organic solvent, stir and react at 150r / min at 79°C for 1.5 hours, cool to room temperature, stir at 1500r / min for 6 hours, and then spin Evaporate and remove the solvent to obtain tetrasilanol sodium salt, which is then vacuum-dried for subsequent use;

[0021] (2) After mixing the plant polyol and diisocyanate, add it to the reaction kettle, then add the organic solvent to the re...

Embodiment 2

[0030] An environmentally friendly water-based polyurethane coating, which is made of the following components in parts by weight: tetrasilanol sodium salt modified polyurethane emulsion 98, nanometer calcium carbonate 25, diatom mud 39, hollow glass microspheres 6.4, potassium trimethylsiliconate 0.15, vinyl tertiary carbonate 6, inorganic salt powder 2.5, wetting agent 1, defoamer 1.5, dispersant 1.2, thickener 1.

[0031] Further, the preparation method of the tetrasilanol sodium salt modified polyurethane emulsion is:

[0032] (1) Dissolve silane, sodium hydroxide, and deionized water in an organic solvent, stir and react at 150r / min at 79°C for 1.5 hours, cool to room temperature, stir at 1500r / min for 6 hours, and then spin Evaporate and remove the solvent to obtain tetrasilanol sodium salt, which is then vacuum-dried for subsequent use;

[0033] (2) After mixing the plant polyol and diisocyanate, add it to the reaction kettle, then add the organic solvent to the reacti...

Embodiment 3

[0042] An environmentally friendly water-based polyurethane coating, which is made of the following components in parts by weight: tetrasilanol sodium salt modified polyurethane emulsion 95, nanometer calcium carbonate 22, diatom mud 36, hollow glass microspheres 5.8, potassium trimethylsiliconate 0.13, vinyl tertiary carbonate 5, inorganic salt powder 2.1, wetting agent 0.8, defoamer 0.9, dispersant 0.6, thickener 0.8.

[0043] Further, the preparation method of the tetrasilanol sodium salt modified polyurethane emulsion is:

[0044] (1) Dissolve silane, sodium hydroxide, and deionized water in an organic solvent, stir and react at 150r / min at 79°C for 1.5 hours, cool to room temperature, stir at 1500r / min for 6 hours, and then spin Evaporate and remove the solvent to obtain tetrasilanol sodium salt, which is then vacuum-dried for subsequent use;

[0045] (2) After mixing the plant polyol and diisocyanate, add it to the reaction kettle, then add the organic solvent to the reac...

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PUM

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Abstract

The invention discloses an environmental-friendly waterborne polyurethane coating and relates to the technical field of waterborne coatings. The environmental-friendly waterborne polyurethane coatingis prepared from the following components: tetrasilanol sodium salt modified polyurethane emulsion, nano calcium carbonate, diatom ooze, hollow glass beads, potassium trimethylsilanolate, vinyl versatate, inorganic salt powder, a wetting agent, an antifoaming agent, a dispersing agent and a thickening agent. The environmental-friendly waterborne polyurethane coating prepared from the invention hasexcellent scrubbing resistance, stain resistance and artificial aging resistance.

Description

technical field [0001] The invention belongs to the technical field of water-based paint, and in particular relates to an environment-friendly water-based polyurethane paint. Background technique [0002] At present, because oil-based paint itself contains solvents, it must be diluted with a large amount of organic solvents containing benzene, alcohols, esters or ketones, which is very harmful to environmental pollution and human health, and is a flammable and explosive product. There are fire hazards in production and construction sites. With the improvement of people's quality of life, the demand for water-based coatings is increasing. However, although water-based coatings are environmentally friendly, they have low hardness and poor tear resistance after curing. Contents of the invention [0003] The purpose of the present invention is to provide a kind of environment-friendly waterborne polyurethane coating for existing problem. [0004] The present invention is achi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/61C09D7/63C09D5/16C08G18/38C08G18/67
CPCC09D175/14C08G18/3893C08G18/672C08K2003/265C08K2003/3081C08K2201/011C08L2205/03C09D5/1687C09D7/61C09D7/63C09D7/70C08L71/02C08L1/284C08K13/04C08K7/26C08K3/26C08K7/28C08K3/34C08K5/098C08K3/30C08K5/053
Inventor 郭平
Owner 含山县领创新材料科技有限公司
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