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Anti-sagging polyurethane white finish and main paint thereof

A technology of polyurethane and white topcoat, applied in the field of polyurethane paint, can solve problems such as sag and exposed bottom, and achieve the effect of not being easy to sag

Active Publication Date: 2013-03-27
SHANGHAI CHANGRUNFA PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages of sag and exposed bottom when the polyurethane topcoat is sprayed on corners, convex substrates and facades, the present invention provides an anti-sag polyurethane white topcoat and its main paint components

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] In the present embodiment, the component of the main paint of anti-sagging polyurethane white finish paint comprises:

[0056] Short oil alkyd resin 40kg;

[0057]60% mass concentration titanium dioxide slurry 48kg;

[0058] Talc powder 6kg;

[0059] Polyether modified silicone oil leveling agent 0.3kg;

[0060] Fumed silica 0.5kg;

[0061] Xylene 1kg;

[0062] Defoamer 1kg.

[0063] The fineness of talcum powder is 3000 mesh.

Embodiment 2

[0065] In the present embodiment, the component of the main paint of anti-sagging polyurethane white finish paint comprises:

[0066] Short oil alkyd resin 40kg;

[0067] 60% mass concentration titanium dioxide slurry 48kg;

[0068] Talc powder 6kg;

[0069] Polyether modified silicone oil leveling agent 0.3kg;

[0070] Fumed silica 2 kg;

[0071] Ethyl acetate 2kg;

[0072] Antioxidant 0.5kg.

[0073] The fineness of talcum powder is 3000 mesh.

Embodiment 3

[0075] In the present embodiment, the component of the main paint of anti-sagging polyurethane white finish paint comprises:

[0076] Short oil alkyd resin 40kg;

[0077] 60% mass concentration titanium dioxide slurry 48kg;

[0078] Talc powder 6kg;

[0079] Polyether modified silicone oil leveling agent 0.3kg;

[0080] Fumed silica 5 kg;

[0081] Toluene 1.5kg;

[0082] Defoamer 0.3kg;

[0083] Antioxidant 0.2kg.

[0084] The fineness of talcum powder is 3000 mesh.

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Abstract

The invention discloses anti-sagging polyurethane white finish. Main paint of the polyurethane white finish comprises the following components in parts by weight: 35-50 parts of short oil alkyd resin, 40-55 parts of titanium dioxide slurry with mass concentration of 60%, 5-8 parts of talcum powder, 0.1-0.5 part of polyether modified silicone oil leveling agent, 0.5-5 parts of fumed silica and 1-2 parts of solvent. Through the mixing of the components, the polyurethane white finish provided by the invention has proper surface tension and avoids frequent sagging and base exposure; and moreover, under the effect of surface tension, the paint film can be converted from an uneven surface into an even one.

Description

technical field [0001] The invention relates to a polyurethane paint, in particular to a white polyurethane paint without sag phenomenon and its main paint components. Background technique [0002] Polyurethane paint film is tough, full of luster, strong adhesion, water-resistant, wear-resistant, and corrosion-resistant. It is widely used in high-grade wood furniture coatings, metal surface coatings, electronic coatings, special coatings and other fields. [0003] In the domestic furniture paint market, PU paint still occupies the most important position, among which white series products have the highest share, and among them, two-component polyurethane paint is the most widely used. Two-component polyurethane paint is generally composed of hydroxyl-containing resin (main paint) and isocyanate prepolymer (curing agent). During the construction process, the main paint and isocyanate prepolymer are cross-linked to obtain a polyurethane film. Due to the long reaction process,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/14C09D7/12
Inventor 伍小燕梁文文
Owner SHANGHAI CHANGRUNFA PAINT
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