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High solids water-based clear paint

A high solid content, clear paint technology, applied in the direction of coating, can solve the problems of low solid content of water-based resin, difficult to achieve fullness and transparency of clear paint, etc., to improve filling, improve film fullness, coating smooth effect

Inactive Publication Date: 2016-08-24
广州益景春环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason for this problem is that the solid content of water-based resins is generally low, generally between 40-45%, making it difficult to achieve a reasonable balance between the fullness and transparency of the final product transparent paint

Method used

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  • High solids water-based clear paint
  • High solids water-based clear paint
  • High solids water-based clear paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment is a kind of high solid content waterborne transparent paint, comprises the raw material component of following mass percentage composition:

[0029]

[0030]

[0031] Wherein the functional powder includes the following raw materials in parts by weight:

[0032] 25 parts by weight of high acid value (69-80mgKOH / g) carboxyl-terminated polyester resin P5500;

[0033] 50 parts by weight of medium acid value (32-38mgKOH / g) carboxyl-terminated polyester resin SJ4E;

[0034] Low acid value (18-25mgKOH / g) carboxyl-terminated polyester resin P883 25 parts by weight.

[0035] The mass content of the hydroxyl group in the hydroxyl acrylic resin is 0.2-0.4%.

Embodiment 2

[0037] The present embodiment is a kind of high solid content waterborne transparent paint, comprises the raw material component of following mass percentage composition:

[0038]

[0039]

[0040] Wherein the functional powder includes the following raw materials in parts by weight:

[0041] 30 parts by weight of high acid value (69-80mgKOH / g) carboxyl-terminated polyester resin P5500;

[0042] Medium acid value (32-38mgKOH / g) carboxyl-terminated polyester resin SJ4E 40 parts by weight;

[0043] 30 parts by weight of low acid value (18-25 mgKOH / g) carboxyl-terminated polyester resin P883.

[0044] The mass content of the hydroxyl group in the hydroxyl acrylic resin is 0.2-0.4%.

Embodiment 3

[0046] The present embodiment is a kind of high solid content waterborne transparent paint, comprises the raw material component of following mass percentage composition:

[0047]

[0048]

[0049] Wherein the functional powder includes the following raw materials in parts by weight:

[0050] High acid value (69-80mgKOH / g) carboxyl-terminated polyester resin P5500 35 parts by weight;

[0051] Medium acid value (25-35mgKOH / g) carboxyl-terminated polyester resin SJ4E 30 parts by weight;

[0052] Low acid value (18-25mgKOH / g) carboxyl-terminated polyester resin P883: 35 parts by weight.

[0053] The mass content of the hydroxyl group in the hydroxyl acrylic resin is 0.2-0.4%.

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Abstract

The invention discloses a water-based transparent paint with high solid content, which comprises the following raw material components in mass percentage: 25-35% of acrylic resin, 15-25% of hydroxyl acrylic resin, 35-45% of functional powder, functional auxiliary Agent 1.4-3.6%, film-forming aid 4-6%, pH regulator 0.2-0.5%, water 0.5-1.5%, the sum of the mass percentages of the above raw materials is 100%. This water-based transparent paint integrates the self-crosslinking of water-based acrylic resin, the cross-linking reaction of water-based hydroxyl acrylic resin and carboxyl-terminated powder polyester (functional powder) with different acid value gradients, forming a dense paint film. Excellent transparency. The functional powder of the present invention is a resin with a high glass transition temperature, which is solid at room temperature, and acts as a film-forming substance and a filler in the coating composition, so that the solid content of the water-based transparent paint reaches 60-65%, which greatly improves the coating composition. Excellent filling and film fullness.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based transparent paint with high solid content. Background technique [0002] With the enhancement of environmental protection awareness and the improvement of environmental regulations, the use of volatile organic compounds (VOC) and harmful air pollutants in traditional solvent-based coatings has become more and more restricted, and water-based coatings have attracted more and more attention. [0003] At present, the solid content of the existing water-based transparent primer is generally 30-35%, and the filling and fullness are not high. The main reason for this problem is that the solid content of the water-based resin is generally low, generally between 40-45%, which makes it difficult for the fullness and transparency of the final transparent paint to reach a reasonable balance. Contents of the invention [0004] Based on this, the object of the present invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D7/12
Inventor 刘勇邓建华邱玉恒刘晓红张剑
Owner 广州益景春环保材料科技有限公司
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