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Polyurethane dull white paint for woodenware

A polyurethane and white topcoat technology, applied in the field of coatings, can solve the problems of reducing furniture beautification, cracking, easy to yellow, etc., and achieve the effects of excellent anti-yellowing, high strength and excellent anti-cracking effect.

Inactive Publication Date: 2007-09-05
GUANGDONG BADESE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Because the conventional topcoat contains double chains in the resin and benzene rings (toluene diisocyanate and trimethylolpropane prepolymer) are brought into the curing agent, it is easy to yellow and crack after the paint is formed into a film, which greatly reduces the beautification of the furniture. degree

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Present embodiment is to prepare matte white finish paint of the present invention, and it is prepared by following method:

[0017] (1) Group A

[0018] Add 23.3kg of coconut oil alkyd resin, 0.2kg of wetting and dispersing agent (A146), 0.5kg of cyclohexanone, 1.0kg of xylene, and 25kg of 595 titanium dioxide into the reaction kettle in sequence, stir and disperse, and sand-mill until the fineness is ≤25um, then Then add in turn: 13.5kgA146 coconut oil alkyd resin, 15.0kg 1 / 2 second nitrocellulose (25% n-butyl acetate), 4.0kg n-butyl acetate, 2.0kg15% polyethylene wax slurry, 0.1kg wetting and dispersing agent , 5.0kg C805 matting powder, 0.2kgDC-5300 defoamer, 0.3kgEFKA-3033 leveling agent, 2.0kg cyclohexanone, 7.5kg xylene, 0.4kg n-butyl acetate produced by U.S. Grace Company, at 1200r / Stir at a speed of min for 25 minutes until the fineness is ≤25um, adjust the viscosity with n-butyl acetate to 5000-6000CPS / 25°C to obtain component A;

[0019] (2) Mix 55% dehydr...

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PUM

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Abstract

The present invention is one kind of dull white finishing polyurethane paint for wood ware. The present invention features that the dull white finishing paint is compounded with three components, including the component A comprising modified alkyd resin, titanium white powder, nitro cotton, etc.; the component B comprising n-butyrate and HDI-90; and component C comprising n-butyrate and toluene. The dull white finishing paint has excellent yellowing resistance, powerful adhesion, high hardness, high wear resistance, good leveling property, and high environment protecting property.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a polyurethane matte white finish for wood. Background technique [0002] Polyurethane matte white finish is a kind of white paint with excellent comprehensive performance, which is widely used in wood decoration. Because the conventional topcoat contains double chains in the resin and benzene rings (toluene diisocyanate and trimethylolpropane prepolymer) are brought into the curing agent, it is easy to yellow and crack after the paint is formed into a film, which greatly reduces the beautification of the furniture. degree. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcoming of prior art, propose a kind of quick-drying type, anti-yellowing polyurethane matte white topcoat. [0004] The polyurethane matt white finish paint of the present invention is formulated from the following three components, and the specific preparation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04
Inventor 方学平
Owner GUANGDONG BADESE CHEM
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