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Two-component PU (Polyurethane) paint

A two-component coating technology, applied in the field of coatings, can solve problems such as poor adhesion, and achieve the effects of easy construction, good image clarity, excellent adhesion and solvent resistance

Inactive Publication Date: 2013-09-25
DANYANG JIAMEI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current water-based two-component polyurethane coatings have poor film adhesion

Method used

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Experimental program
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Embodiment Construction

[0013] Hereinafter, the technical solutions of the present invention will be further described according to specific embodiments, but the present invention is not limited to these embodiments.

[0014] The two-component PU coating of the present invention is composed of the following components: polyurethane resin: 18-23wt%, aliphatic isocyanate: 13-16wt%, pigment: 5-8wt%, filler: 3-6wt%, defoaming Agent: 0.5-0.8wt%, dispersant: 1.5-2.0wt%, thickener: 0.2-0.3wt%, trimethylsilimidazole: 1.2-1.8wt%, dimethyl carbonate: 15-18wt%, carbonic acid Diethyl ester: 6-8wt%, ethyl methyl carbonate: 15-25wt% and the balance of isopropanol.

[0015] Preferably, polyurethane resin: 18-23wt%, aliphatic isocyanate: 13-16wt%, pigment: 5-8wt%, filler: 3-6wt%, BYK-094: 0.5-0.8wt%, Dow Corning DC-3: 1.5 -2.0wt%, UH-450VF: 0.2-0.3wt%, trimethylsilimidazole: 1.2-1.8wt%, dimethyl carbonate: 15-18wt%, diethyl carbonate: 6-8wt%, methyl ethyl carbonate Esters: 15-25 wt% and the balance isopropanol.

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PUM

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Abstract

The invention relates to two-component PU (Polyurethane) paint. The two-component PU paint comprises the following components of: 18wt%-23wt% of polyurethane resin, 13wt%-16wt% of aliphatic isocyanate, 5wt%-8wt% of pigment, 3wt%-6wt% of packing, 1.5wt%-4.0wt % of additive and 45wt% to 60wt% of solvent. The two-component PU paint has excellent adhesiveness and solvent resistance and is applied to the coating of the surfaces of electronic products such as televisions, mobile phones, technological plastic products, refrigerators and washing machines. A paint film formed by coating the paint is smooth, bright, easy in application, thick and high in hardness, and has excellent interlayer adhesion, high solid content, good distinctness of image and abrasion performance. The paint with various colors and tones can be supplied according to the client requirements.

Description

technical field [0001] The invention belongs to the technical field of coatings, more specifically, the invention relates to a two-component PU coating with excellent adhesion and solvent resistance. Background technique [0002] The main film-forming substances of two-component acrylic polyurethane coatings contain hydroxyl resin and polyurethane. Because of their excellent physical and mechanical properties, excellent gloss retention, color retention, and weather resistance, they are widely used in the coating of product shells with high chemical resistance. , for example, the thermosetting two-component PU coating can be used in packaging and general industrial coating systems, such as widely used in bicycles, motorcycles, automobiles, refrigerators, washing machines, electric fans, instruments, meters, precision machinery and IT products Surface coating. [0003] With the improvement of laws and regulations in various countries in the world and the improvement of people...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04C09D7/12
Inventor 黄勤创
Owner DANYANG JIAMEI CHEM
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