A kind of water-based two-component polyurethane matte coating and its preparation method and application

A water-based two-component, polyurethane technology, applied in the field of coatings, can solve problems affecting the water resistance of coatings, and achieve the effects of improving flexibility, reducing costs, and ensuring stability

Active Publication Date: 2022-04-12
DONGGUAN CTL NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of matting powder in this invention will affect the water resistance of the coating

Method used

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  • A kind of water-based two-component polyurethane matte coating and its preparation method and application
  • A kind of water-based two-component polyurethane matte coating and its preparation method and application
  • A kind of water-based two-component polyurethane matte coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0090]

[0091]

[0092] The raw materials of the B component include the following components in parts by weight:

[0093] Covestro 307 water-based curing agent 0.1 part.

[0094] Among them, the solid content of the hydroxyacrylate emulsion is 35%, the hydroxyl content is 2%, and the particle size of the rutile titanium dioxide is 500 mesh.

[0095] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0096]

[0097] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0098] (1) Preparation of pre-emulsion

[0099] Put 30 parts of deionized water and 0.5 pa...

Embodiment 2

[0111] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0112]

[0113]

[0114] The raw materials of the B component include the following components in parts by weight:

[0115] Covestro 307 water-based curing agent 5 parts.

[0116] Among them, the solid content of the hydroxyacrylate emulsion is 55%, the hydroxyl content is 4%, and the particle size of the rutile titanium dioxide is 1000 mesh.

[0117] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0118]

[0119] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0120] (1) Preparation of pre-emulsion

[0121] Put 30 parts of deionized water and 0.5 part...

Embodiment 3

[0133] In this embodiment, a water-based two-component polyurethane matte coating is provided, and the water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following parts by weight Components:

[0134]

[0135]

[0136] The raw materials of the B component include the following components in parts by weight:

[0137] Covestro 307 water-based curing agent 0.5 parts.

[0138] Wherein, the solid content of the hydroxyacrylate emulsion is 55%, and the hydroxyl content is 3%.

[0139] The raw materials for the preparation of the hydroxyacrylate emulsion include the following components in parts by weight:

[0140]

[0141] The preparation method of described hydroxyacrylate emulsion comprises the following steps:

[0142] (1) Preparation of pre-emulsion

[0143] Put 30 parts of deionized water and 0.5 parts of emulsifier in a pre-emulsification bottle, stir evenly at...

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Abstract

The invention provides a water-based two-component polyurethane matte coating and its preparation method and application. The water-based two-component polyurethane matte coating includes A component and B component, and the preparation raw materials of the A component include the following weight Components in parts: 60-90 parts of hydroxyacrylate emulsion; 5-20 parts of deionized water; 0-30 parts of powder; 0.5-2.5 parts of wetting and dispersing agent; 0.2-2 parts of thickener; defoamer 0.2 to 1 part; 0.5 to 1.5 parts of preservative; 0.2 to 2 parts of film-forming aid; the raw materials of component B include the following components in parts by weight: 0.1 to 5 parts of Covestro 307 water-based curing agent. The polyurethane matte paint of the invention can have a matte effect without adding additional matting powder, can greatly improve the water resistance, permeability and stability of the paint, and is suitable for the field of paint.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a water-based two-component polyurethane matte paint and its preparation method and application, in particular to a self-dulling water-based two-component polyurethane matte paint and its preparation method and application. Background technique [0002] With the strengthening of people's awareness of environmental protection, national environmental protection laws and regulations have become more stringent on the emission of volatile organic compounds (VOC) in the coatings industry. Especially in the field of wood lacquer, various places have begun to implement the "oil to water" project. Waterborne two-component polyurethane coatings have bright application prospects as high-performance and green products. Water-based two-component polyurethane products (2K-WPU) are mainly composed of hydroxyacrylate resin and isocyanate curing agent, which can form a cross-linked network struct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D7/61C08G18/62
CPCC09D175/04C09D7/61C08G18/6229C08K2003/2241C08K3/22
Inventor 徐四喜卢开平赵文爱陈任卢浩标张雅莲覃事玖
Owner DONGGUAN CTL NEW MATERIAL TECH
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