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Ultralow-odor polyurethane matte varnish and preparation method thereof

A technology of polyurethane and clear topcoat, applied in the field of coatings, which can solve problems such as incomplete volatilization of organic solvents, threats to human health, and residual pungent odors, and achieve the effects of low application odor, smooth coating film, and good flexibility

Inactive Publication Date: 2021-04-09
AODA KOALA PAINT HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the painting of indoor furniture, if traditional solvent-based paints are used, the organic solvents will not evaporate completely after painting, leaving a pungent smell, which is harmful to the environment and threatens human health

Method used

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  • Ultralow-odor polyurethane matte varnish and preparation method thereof
  • Ultralow-odor polyurethane matte varnish and preparation method thereof
  • Ultralow-odor polyurethane matte varnish and preparation method thereof

Examples

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Embodiment

[0038] The following table is the formula table (unit: %) of 4 examples of ultra-low odor polyurethane matt clear finish paint of the present invention.

[0039]

[0040] A kind of preparation method of described ultra-low odor polyurethane matte varnish, comprises the following steps:

[0041] A. Preparation of Component A

[0042] a. Mix nitrocellulose with lipid solvent, soak for 2-3 hours, stir at a speed of 300-500r / min, until all materials are dissolved and become a transparent liquid;

[0043] b. Add net taste alkyd resin, castor oil modified alkyd resin, epoxy resin, gel silica, polyamide wax, polytetrafluoroethylene modified polyethylene wax, hollow glass microspheres, wetting and dispersing agent and Defoamer, stir at 1200-1400r / min for 10-15min to fineness≤20μm;

[0044] c. Add the remaining components, stir at a speed of 500-800r / min for 10-15min, mix well and pass through a 200-mesh sieve to obtain component A;

[0045] B. Preparation of B component

[0046...

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Abstract

The invention belongs to the technical field of coatings. The ultralow-odor polyurethane matte varnish is prepared from a component A and a component B. The component A comprises the following components: odorless alkyd resin, castor oil modified alkyd resin, epoxy resin, nitrocellulose, polyamide wax, polytetrafluoroethylene modified polyethylene wax, gel silicon dioxide, hollow glass beads, a wetting dispersant, sec-butyl acetate, dimethyl carbonate, butyl propionate, an anti-foaming agent and a leveling agent. The component B comprises the following components: a toluene diisocynate tripolymer, a hexamethylene diisocyanate tripolymer, a toluene diisocynate prepolymer, sec-butyl acetate and dimethyl carbonate. The varnish film has the advantages of high hardness, favorable flexibility, favorable scratch resistance, favorable wear resistance, softness and attractive appearance, and smooth and fine hand feeling. The varnish is applied to coating of indoor furniture, the smell is extremely low after 24 hours of coating, and the varnish is basically odorless after 48 hours.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to an ultra-low odor polyurethane matt clear finish and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the requirements for environmental protection of furniture products are getting higher and higher. Finished furniture includes wood, glue, paint, etc. The formation of furniture odor is closely related to the three. After home decoration, the paint is exposed to the outermost layer, which has a great impact on the formation of furniture odor. According to the analysis of the source of the odor of the coating film, the odor comes from the resin, the curing agent isocyanate, and the organic solvent that is not completely volatilized. [0003] For the painting of indoor furniture, if traditional solvent-based paints are used, the organic solvents will not evaporate completely after painting, leaving a pungen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D7/61C09D7/20
CPCC09D175/06C09D7/20C09D7/61C09D7/70C08K13/04C08K7/28C08K7/26
Inventor 惠忠学陈日云甘云华严雁荣王飞
Owner AODA KOALA PAINT HUIZHOU
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