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Elastic raindrop impression resisting styrene-acrylic emulsion and preparation method thereof

A styrene-acrylic emulsion and rain-resistant technology, applied in the field of styrene-acrylic emulsion and its preparation, can solve the problems of reducing the mechanical properties of the paint film, affecting the overall appearance of the paint film, and prone to blooming of the paint film, so as to improve the mechanical strength and the reaction ability. Excellent, reactive effect

Inactive Publication Date: 2016-03-02
CHANGSHU BATF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during outdoor construction, due to the changeable weather, the difference in temperature and humidity is very obvious, especially in rainy seasons, the coating film is very prone to blooming, blistering, and easy to fall off, and its rain marks, bright spots, etc. It is also very common. The above situation will not only reduce the mechanical properties of the paint film itself, but also seriously affect the overall appearance of the paint film after painting.

Method used

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  • Elastic raindrop impression resisting styrene-acrylic emulsion and preparation method thereof

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preparation example Construction

[0037] The preparation method of the elastic rain-mark resistant styrene-acrylic emulsion of the present invention includes the following steps:

[0038] (1) Preparation of seed emulsion

[0039] a1: Pre-emulsification: under normal temperature and pressure, mix 1-6 parts of anionic emulsifier and 10-25 parts of water in an emulsifying tank, stir well to dissolve, and add styrene, methyl methacrylate and isooctyl acrylate in sequence Ester and butyl acrylate are mixed uniformly to prepare a pre-emulsion. The mass fraction ratio of styrene, methyl methacrylate, isooctyl acrylate, and butyl acrylate is (30-40): (15-25): (12-18): (15-23);

[0040] b1: Polymerization: Add 30-35 parts of water and 5-10 parts of anionic emulsifier to the bottom of the reactor, heat to 70-90°C, stir for 10-30 minutes, and then dropwise add the pre-emulsion obtained in step a1 and 0.05- 0.2 parts of initiator for chemical reaction, reaction temperature is 80-90°C, reaction time is 15-75 minutes;

[0041] c1...

Embodiment 1

[0052] The elastic rain-mark resistant styrene-acrylic emulsion of the present invention includes water, styrene, methyl methacrylate, isooctyl acrylate, butyl acrylate, acrylic acid, methacrylic acid, acrylamide, sodium lauryl sulfate, 3-allyl Sodium oxy-1-hydroxy-1-propane sulfonate, vinyl trimethoxysilane, sodium persulfate, organic peroxide, sodium bisulfite, the contents of the above components in terms of parts by mass are: 80 parts of water , 38 parts of styrene, 22 parts of methyl methacrylate, 12 parts of isooctyl acrylate, 22 parts of butyl acrylate, 0.5 part of acrylic acid, 0.5 part of methacrylic acid, 1 part of acrylamide, 7 parts of sodium lauryl sulfate , 0.5 parts of sodium 3-allyloxy-1-hydroxy-1-propane sulfonate, 1 part of vinyl trimethoxysilane, 0.2 part of sodium persulfate, 0.1 part of organic peroxide, and 0.1 part of sodium bisulfite.

[0053] The preparation method of the elastic rain-mark resistant styrene-acrylic emulsion of the present invention includ...

Embodiment 2

[0067] The elastic rain-mark resistant styrene-acrylic emulsion of the present invention includes water, styrene, methyl methacrylate, isooctyl acrylate, butyl acrylate, acrylic acid, methacrylic acid, acrylamide, sodium lauryl sulfate, dodecyl Sodium benzene sulfonate, sodium 3-allyloxy-1-hydroxy-1-propane sulfonate, sodium 3-allyloxy-1-hydroxy-1-propane phosphate, sodium vinyl sulfonate, 2-acrylate Amido-2-methylpropyl sodium sulfonate, vinyl trimethoxysilane, γ-methacryloxypropyl trimethoxysilane, trimethylolpropane trimethacrylate, methacrylic acid Propyl ester, sodium persulfate, ammonium persulfate, potassium persulfate, organic peroxide, sodium bisulfite, L-ascorbic acid, the content of the above components calculated by mass parts are: 130 parts of water, 60 parts of styrene, 45 parts of methyl methacrylate, 18 parts of isooctyl acrylate, 73 parts of butyl acrylate, 5 parts of acrylic acid, 5 parts of methacrylic acid, 5 parts of acrylamide, 9 parts of sodium lauryl sul...

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Abstract

The invention discloses an elastic raindrop impression resisting styrene-acrylic emulsion. The elastic raindrop impression resisting styrene-acrylic emulsion is prepared from, by mass, 80-130 parts of water, 38-60 parts of styrene, 22-45 parts of methyl methacrylate, 12-18 parts of 2-ethylhexyl acrylate, 22-73 parts of butyl acrylate, 0.5-5 parts of acrylic acid, 0.5-5 parts of methacrylic acid, 1-5 parts of acrylamide, 7-18 parts of an anionic emulsifier, 0.5-2 parts of a reactive emulsifier, 1-5 parts of a crosslinking monomer, 0.2-0.9 part of an initiator, 0.1-0.5 part of an oxidant and 0.1-0.5 part of a reducing agent. The elastic raindrop impression resisting styrene-acrylic emulsion has excellent mechanical strength and higher weather resistance.

Description

Technical field [0001] The invention relates to a styrene-acrylic emulsion and a preparation method thereof, in particular to an elastic rain-mark resistant styrene-acrylic emulsion and a preparation method thereof. Background technique [0002] With economic development, the application of decorative coatings for exterior walls of buildings has become increasingly widespread. Elastic emulsions are becoming more and more popular among consumers due to their excellent stretching properties. However, the traditional elastic emulsion has its own insurmountable technical defects. First, traditional elastic emulsions are made by mixing high glass transition temperature emulsions and low glass transition temperature emulsions, which not only ensures the elasticity of the paint film, but also ensures stain resistance and weather resistance. But the way of mixing and matching will cause uneven particle distribution in the emulsion, resulting in low mechanical properties. Second, if a...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F220/06C08F220/56C08F230/08C08F220/40C08F222/14C08F2/26
Inventor 刘晋男刘燕罗云罗宇
Owner CHANGSHU BATF TECH CO LTD
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