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Coating emulsion and preparation method thereof

An emulsion and coating technology, applied in the coating and other directions, can solve the problem of insufficient water resistance, and achieve the effects of good washing resistance, good water resistance, and good calcium ion stability

Inactive Publication Date: 2012-07-18
上海奇想青晨新材料科技股份有限公司
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  • Abstract
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Problems solved by technology

[0003] However, this type of material still has some technical weaknesses in practical applications, such as insufficient water resistance, etc.

Method used

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  • Coating emulsion and preparation method thereof
  • Coating emulsion and preparation method thereof

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Experimental program
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Embodiment

[0036] A. First, add 2 parts by weight of compound emulsifier and 20 parts by weight of deionized water into the polymerization reactor, stir and heat up;

[0037] B. 30 parts by weight of deionized water, 7 parts by weight of composite emulsifier, 25 parts by weight of hard monomer (the compounding of styrene and 18 parts by weight of methyl methacrylate) are added in the pre-emulsification kettle, Under the condition of constant speed (820 rev / min), after stirring for 120 minutes, the pre-emulsion was obtained, and 3.72 parts by weight thereof were weighed as the bottom seed reaction solution for subsequent use;

[0038] C. Raise the temperature of the polymerization reactor in step A to 65-70°C, drop in 3.72 parts by weight of the bottom seed reaction solution in step B, then add 1 part by weight of the bottom initiator to react for 100-120 minutes, and pour into the polymerization reactor Continue to add 200 parts by weight of deionized water, slowly lower the temperature ...

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Abstract

The invention relates to coating emulsion and also provides a preparation method of the coating emulsion. The coating emulsion is formed by the polymerization of the following raw materials: hard monomers, soft monomers, functional monomers, compound emulsifier, organic silicon, initiators, PH regulator and deionized water. According the preparation method, the proper proportion of the soft monomers and the hard monomers is selected, the anion and nonionic emulsifier is applied for mixing, and the coating emulsion is prepared by core-shell polymerization, so that the coating emulsion is lower in film forming temperature, good in water resistance, good in washing resistance, good in calcium ion stability, and can be widely applied to the preparation process of building coatings.

Description

technical field [0001] The invention relates to architectural coatings, in particular to an interior and exterior wall coating emulsion and a preparation method thereof. Background technique [0002] With the development of the construction industry, the development and application of various waterproof coatings have developed rapidly, and the quality requirements for architectural waterproof coatings are getting higher and higher. At present, among the waterproof coatings with use value at home and abroad, the waterproof coatings formulated with styrene-acrylate copolymer emulsion as raw materials occupy a large proportion. Compared with solvent-based products such as tar polyurethane and other solvent-based products, water-emulsion type styrene-acrylate copolymer emulsion waterproof coating has the advantages of non-toxic, odorless, and otherwise, because water replaces organic solvents. It is safe and reliable, and can be cooled at room temperature. Construction operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/14C08F2/30C08F2/26C09D133/08C09D7/12
Inventor 高翔
Owner 上海奇想青晨新材料科技股份有限公司
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