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Water-soluble acrylic resin as lacquer in use for glass and preparation

A technology of water-soluble acrylic and acrylic resin, which is applied in the direction of coating, etc., can solve the problems that cannot meet the requirements of glass coating, cannot meet the requirements of glass paint, and the water resistance of the coating is not ideal, so as to solve the problem of poor water resistance, Strong adhesion and high hardness

Inactive Publication Date: 2007-10-10
JIANGSU SANMU GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large amount of strong hydrophilic carboxyl groups in its molecular structure, the water resistance of the prepared coating is not ideal after it is dried and formed into a film. After soaking in water at room temperature for ten to twenty minutes, the coating will dissolve and will be on the glass substrate. The adhesion of the upper coating is low, only two to three grades, and the hardness of thermoplastic water-soluble acrylic resin is below HB. The above defects all cause it to fail to meet the requirements of glass coatings. Cook for 1 hour without coating peeling off
[0003] The water-soluble acrylic acid disclosed in Chinese patents CN85104823 and CN87102540 is a powder type, which is diluted with water when used, but the coating water resistance, hardness and glass adhesion of the prepared coating also cannot meet the requirements of glass coating.
[0004] Chinese patent CN91107054.0 discloses the water-soluble acrylic acid amino baking coating resin, also owing to containing a large amount of hydrophilic carboxyl groups and amino functional groups on the molecular chain, causes the water boiling resistance, adhesion etc. after the curing of the prepared coating coating, can not Meet the requirements of glass paint

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Synthesis of epoxy-modified acrylic resin: Mix 18 g of butyl acrylate, 20 g of methyl methacrylate, 5 g of acrylic acid, and 2.0 g of benzoyl peroxide to dissolve them evenly, add them into a dropping funnel, and mix 42 g of ethanol and 828 g of ethanol. 5 g of epoxy resin was added to the four-necked flask equipped with a stirrer, a condenser, a thermometer, a heater and a dropping funnel, the temperature was raised to the boiling point of the solution and refluxed for 2 minutes. The dripping was completed within an hour, and the temperature was controlled to keep the boiling point of the solution in the kettle (between 75-88° C.). After the droplet addition is completed, keep the solution boiling for 3h, add 0.5g of initiator benzoyl peroxide, keep the temperature for 3h, detect the solid content, and when the conversion rate is above 99%, cool and filter for use.

[0026] 2. Preparation of water-soluble epoxy-modified acrylic resin: add 92 g of the above-mentioned...

Embodiment 2

[0028] 1. Synthesis of solvent-based epoxy-modified acrylic resin: mix 10g of butyl acrylate, 10g of 618 epoxy resin, 15g of methyl methacrylate, 7g of hydroxyethyl acrylate, 4g of acrylic acid, and 1g of benzoyl peroxide, mix and stir to dissolve Evenly, add to the dropping funnel, add 35 g of isopropanol to the four-necked flask equipped with a stirrer, a condenser, a thermometer, a heater and a dropping funnel, heat up to the boiling point of the solution and reflux for 2 minutes, start dropping the material to carry out free radicals In the polymerization reaction, the feed liquid is controlled to be dropped within 2-4 hours, and the temperature is controlled to maintain the kettle point (between 75-85° C.) of the solution in the kettle. After the dripping is completed, keep the solution boiling for 3h, add 0.2g of initiator benzoyl peroxide, keep the temperature for 3h, check the solid content, when the conversion rate is above 99%, cool and filter for use.

[0029] 2. Pr...

Embodiment 3

[0031] 1. Synthesis of solvent-based epoxy-modified acrylic resin: Mix 13 g of butyl acrylate, 11 g of methyl methacrylate, 2 g of acrylic acid, and 1 g of benzoyl peroxide to dissolve evenly. 15g of ethanol and 3g of 601 epoxy resin were added to the four-necked flask equipped with a stirrer, a condenser, a thermometer, a heater and a dripping funnel, and the temperature was raised to the boiling point of the solution and refluxed for 2 minutes, and the dripping material was started to carry out a free radical polymerization reaction, and the feed liquid was controlled. The dripping is completed within 2-4 hours, and the temperature is controlled to keep the kettle point of the solution in the kettle (between 75-85 °C). After the dripping is completed, keep the solution boiling for 3 hours, add 0.1 g of initiator benzoyl peroxide, keep the temperature for 3 hours, detect the solid content, and when the conversion rate is above 99%, cool and filter for use.

[0032]2. Preparat...

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PUM

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Abstract

This invention relates to a method for preparing water-soluble acrylic resin used as glass paint. The method comprises: performing free radical solution polymerization on acrylic acid monomer 15-57 wt. %, epoxy resin 1-15 wt. %, C1-4 alcohol 20-80 wt. % and initiator 0.1-10 wt. % at 60-160 deg.C to obtain epoxy-modified acrylic resin, adding a neutralizer and water so that the solid content of the solution is 20-60%, and stirring for dissolution. The coating layer of the water-soluble acrylic resin has high water-cooking resistance, and does not foam or strip after cooked in water for 1 h. Besides, the coating layer has high hardness (2-4 H) and high adhesiveness to glass (0 grade).

Description

technical field [0001] The present invention is a supplement to the applicant's application No. 200510122901.9 water-soluble acrylic resin and its preparation method, and in particular relates to a water-soluble acrylic resin for glass paint with good water resistance, high hardness and strong glass adhesion and its preparation. Background technique [0002] With the increasingly strict requirements for environmental protection, the development of water-soluble acrylic resin has been paid attention to. In the patent application of 200510122901.9 "water-soluble acrylic resin and its preparation", the applicant proposed to dissolve 20-60%wt of water-soluble acrylic resin obtained by free radical polymerization in 40-80%wt of water to obtain no organic solvent water-soluble acrylic resin. It not only retains the mechanical properties, protective properties and decorative properties of coatings prepared with solvent-based acrylic resins, but also has many advantages such as goo...

Claims

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Application Information

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IPC IPC(8): C08F283/10C08F8/00C09D151/08
Inventor 谭征兵钟利刚董亮侯光宇陈欢
Owner JIANGSU SANMU GROUP CORPORATION
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