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Epoxy modified silicon-contained waterborne acrylic resin and coating thereof

A technology of acrylic resin and epoxy modification, applied in the direction of coating, etc., can solve the problems of unfavorable wide application, unfavorable production, high temperature curing, etc., and achieve the effects of easy operation, enhanced retention and good adhesion

Inactive Publication Date: 2010-07-14
常州市弘可利办公用品有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the resin synthesis process, the viscosity is too high, which is not conducive to production, and high temperature curing is required, which is not conducive to wide application
[0005] At present, there is no resin and coating that is environmentally friendly, easy to produce and operate, and can meet the requirements of glass coatings.

Method used

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  • Epoxy modified silicon-contained waterborne acrylic resin and coating thereof
  • Epoxy modified silicon-contained waterborne acrylic resin and coating thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of epoxy-modified silicon-containing water-based acrylic resin

[0030] a. Synthesis of epoxy resin monoacrylate:

[0031] Feed epoxy resin (E-44) and acrylic acid in a molar ratio of 1:1, add 5‰ hydroquinone as a polymerization inhibitor, react at 100°C for 2 hours, and discharge the acid value less than 5mgKOH / g to obtain epoxy resin monoacrylate.

[0032] b. Synthesis of epoxy-modified waterborne acrylic resin:

[0033] In a 1000mL four-necked flask equipped with a thermometer, a stirrer, a condenser and a dropping funnel, add 50g each of ethanol and butyl glycol ether, mix well, replace the air in the flask with nitrogen, and mix 80gMMA, 50gBA, 60.0 A mixture of gMAA, 9.0g HEMA, 125g epoxy resin monoacrylate, 20g vinyltriethoxysilane and 1.2g azobisisobutyronitrile was put into the dropping funnel, and the contents in the flask were kept at 80-90°C for 3h After dripping, keep it warm at this temperature for 1 hour, then drop 0.5g of azobisis...

Embodiment 2

[0034]Example 2 Preparation of epoxy-modified silicon-containing water-based acrylic resin

[0035] The synthesis method of epoxy resin monoacrylate is the same as in Example 1, using epoxy resins E-51 and E-20 as reactants. The synthesis of epoxy-modified water-based acrylic resin is also carried out with reference to the method of Example 1, but the vinyltriethoxysilane monomer therein is adjusted to methylvinyldichlorosilane 10g, vinyltrichlorosilane 15g, and the obtained The solid content of the resin is 55%-60%.

Embodiment 3

[0036] Example 3 Preparation of epoxy-modified silicon-containing water-based acrylic water-based coating

[0037] Feed according to the order of 1#, 2# and 3# listed in Table 1, that is, after mixing the raw materials in 1# evenly, add 2# component, disperse evenly at a high speed, then add 3# component, sand mill until the fineness reaches Below 25μm, it can be discharged. The solid content of the prepared water-based paint is about 49-55%, and the viscosity is 80-100KU (Stormer viscosity).

[0038] Table 1 Raw materials for water-based coatings (both parts by weight)

[0039]

[0040] The water-based coating was diluted with deionized water to a viscosity suitable for spraying, sprayed onto a glass substrate, and baked at 80°C for 20 minutes. The performance of the coating film was tested as shown in Table 2.

[0041] According to the comparison of the test results in Table 2 with our company's solvent-based glass paint and a certain commercially available water-based ...

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Abstract

The invention provides an epoxy modified silicon-contained waterborne acrylic resin which is prepared by the following steps of: carrying out addition reaction on epoxy resin and acrylic acid to produce epoxy monoacrylate resin; and then carrying out free-base co-polymerization by taking the epoxy monoacrylate resin as a monomer and matching an acrylic acid monomer and an amio silicone monomer to obtain a product. The method overcomes the defects of overlarge viscosity, inconvenient operation, and the like during reaction caused by the fact that the epoxy resin is directly inoculated with the acrylic acid in the past; the resin is matched with soluble amino resin to form a film forming matter, then the resin is matched with relevant pigment and assistants to obtain a waterborne coating which can form a film after solidified at 70-80 DEG C for 20 min when used for the surface of glass; and epoxy amino can obtain excellent adhesive force through solidification and has excellent acid-alkali resistance. The amio silicone monomer has the performance of being baked and solidified at low temperature and achieves fine flexibility, and still has higher hardness and better adhesive force after being water-tolerant, thereby overcoming the defect of being scratched by hard matters in damp and hot environments.

Description

technical field [0001] The invention relates to a water-based acrylic resin, in particular to an epoxy-modified silicon-containing water-based acrylic resin and a coating for glass surfaces using the water-based acrylic resin as a main film-forming substance. Background technique [0002] With the development of the economy, people have higher and higher requirements for the beauty of the living and working environment. Therefore, stained glass is widely used in the decoration of home decoration, hotels, offices, bathrooms and other places. Glass coatings used to decorate various flat glass, glass sanitary ware, screen backgrounds, bathroom products and other products have emerged as the times require, and their market demand has also increased significantly. At present, in addition to basic properties such as good adhesion, corrosion resistance, high hardness and flexibility, glass coatings should also be convenient for industrial construction to meet the needs of market gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08G59/17C09D151/08C03C17/30C03C17/32
Inventor 闫福安周加祥包柏青孙树全
Owner 常州市弘可利办公用品有限公司
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