Waterborne polyurethane paint and method for preparing same

A water-based polyurethane and water-based defoamer technology, applied in the field of coatings, can solve the problems of water resistance, salt spray resistance, salt water resistance, chemical resistance, impact resistance, abrasion resistance and weather resistance, etc. Good cutability and acid and alkali resistance, good compatibility and stable emulsification

Inactive Publication Date: 2016-08-17
ANHUI WILLY PAINT SCI & TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water resistance, salt spray resistance, salt water resistance, chemical resistance, impact resistance, wear resistance and weather resistance of water-based industrial coatings currently used in metal anti-rust paints and ship coatings in my country are not very good.

Method used

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  • Waterborne polyurethane paint and method for preparing same
  • Waterborne polyurethane paint and method for preparing same
  • Waterborne polyurethane paint and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0041]

[0042] The B component is prepared from the following components in parts by weight:

[0043] 12 parts of water-based polyurethane curing agent

[0044] 5 parts of deionized water

[0045] Water-based defoamer 0.02 parts.

[0046] Its preparation method is:

[0047] (1) Mix and stir deionized water, co-solvent, water-based dispersant and half of the water-based defoamer according to the proportion; then add half of the water-based acrylic resin and polyurethane, pigments, and fillers for stirring;

[0048] (2) Grinding the mixture of step (1) by a sand mill to a fineness within 40 microns;

[0049] (3) Continue to stir the material in (2), and add the remaining water-based acrylic resin, water-based defoamer, surfactant, and anti-flash rust agent HZJ-601-4 in turn un...

Embodiment 2

[0054] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0055]

[0056] The B component is prepared from the following components in parts by weight:

[0057] 15 parts of water-based polyurethane curing agent

[0058] 8 parts deionized water

[0059] Water-based defoamer 0.05 parts.

[0060] Its preparation method is with embodiment 1.

Embodiment 3

[0062] A water-based polyurethane paint, which is composed of component A and component B in a mass ratio of 5:1, and the component A is prepared from the following components in parts by weight:

[0063]

[0064] The B component is prepared from the following components in parts by weight:

[0065] 14 parts of water-based polyurethane curing agent

[0066] 6 parts deionized water

[0067] Water-based defoamer 0.03 parts.

[0068] Its preparation method is with embodiment 1.

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Abstract

The invention provides waterborne polyurethane paint and a method for preparing the same. The waterborne polyurethane paint comprises components A and components B according to a mass ratio of 5:1. The components A comprise polyurethane, waterborne acrylic resin, waterborne dispersing agents, waterborne defoaming agents, surfactants, deionized water, solubilizers, anti-flash rusting agents HZJ-601-4, pigment and fillers; the components B comprise waterborne polyurethane curing agents, deionized water and waterborne defoaming agents. The waterborne polyurethane paint and the method have the advantages that the waterborne polyurethane paint is excellent in performance for various base materials, and the performance in the aspects of the abrasion resistance, the acid resistance, the alkali resistance, the water resistance, the oil resistance, the heat resistance and the like of the waterborne polyurethane paint is far superior to the performance of like products; organic solvents are omitted, accordingly, environments can be protected, and the waterborne polyurethane paint is harmless to human bodies.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based polyurethane paint and a preparation method thereof. Background technique [0002] Polyurethane (referred to as PU) is a polymer made of polyisocyanate and polyether polyol or polyester polyol or / and small molecule polyol, polyamine or water and other chain extenders or crosslinking agents. By changing the type and composition of raw materials, the shape and performance of the product can be greatly changed, and the final product from soft to hard can be obtained, which is widely used. Among them, polyurethane paint is a relatively common kind of paint. Its paint film is tough, full of luster, strong adhesion, water resistance, wear resistance, and corrosion resistance. It can be used as a finish paint for high-grade wood furniture or an antirust paint for metal surfaces , Widely used in various fields such as wood, automobiles, aircraft, machinery, electrical app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D5/08C09D7/12
CPCC08L2201/08C08L2205/02C08L2205/025C08L2205/035C09D5/08C09D7/61C09D7/63C09D7/65C09D175/04C08L83/04C08L83/12C08L87/005C08K13/02C08K3/36
Inventor 徐徐蔡旭东
Owner ANHUI WILLY PAINT SCI & TECH LTD
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