Styrene acrylic emulsion containing ultralow VOC content and preparing method thereof

A styrene-acrylic emulsion and content technology, which is applied in the field of architectural coatings, can solve the problems of affecting the health of occupants, low stability between batches, and low production efficiency of products, and achieves reduction of residual monomer content, shortening of production cycle, and reaction. full effect

Inactive Publication Date: 2017-09-08
佛山市顺德区巴德富实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the styrene-acrylic emulsions commonly used in the market have high VOC content. When used as architectural coatings, their VOC content is generally higher than the VOC content standard (80g / L) of wall paint after water removal required by environmental label certification. It pollutes the living indoor environment, has a strong smell and is not environmentally friendly, and seriously affects the health of the occupants.
In addition, at present, the production cycle of most construction emulsions is generally long, the energy consumption is large, the product production efficiency is low, and some of them have complex operations and low stability between batches.

Method used

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  • Styrene acrylic emulsion containing ultralow VOC content and preparing method thereof

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preparation example Construction

[0032] The preparation method of the ultra-low VOC content styrene-acrylic emulsion of the present invention comprises the following steps:

[0033] a) Under normal temperature and pressure, mix 2-10 parts of emulsifier and 10-20 parts of water in an emulsifying tank, after fully stirring and dissolving, add styrene, butyl acrylate, acrylic acid, cross-linking monohydrate in order and evenly stirred for 15-30 minutes to prepare a pre-emulsion for later use;

[0034] b) Add 40-50 parts of water and remaining emulsifier to the bottom of the reaction kettle, heat up to 80-95 ° C, and after the temperature is stable, put 10-15 parts of pre-emulsion in step a) at one time to prepare as seeds In the reaction kettle, after stirring for 0.5-1 minute, 0.1-0.5 part of persulfate initiator is fully dissolved with 2-10 parts of water and added to react, and the seeds are fully reacted for 10-30 minutes;

[0035] c) completely dissolving the remaining persulfate initiator with 5-15 parts ...

Embodiment 1

[0042] The ultra-low VOC content styrene-acrylic emulsion of the present invention comprises, in parts by mass: 80 parts of water, 5 parts of emulsifier, 20 parts of styrene, 20 parts of butyl acrylate, 0.5 part of acrylic acid, and 1 part of cross-linking monomer , 0.2 part of persulfate, 0.1 part of oxidizing agent and 0.2 part of reducing agent.

[0043] The emulsifier is sodium p-styrene sulfonate.

[0044] The crosslinking monomer is vinyltrimethoxysilane.

[0045] The persulfate is ammonium persulfate.

[0046] The oxidant is hydrogen peroxide.

[0047] The reducing agent is ascorbic acid.

[0048] The preparation method of the ultra-low VOC content styrene-acrylic emulsion of the present invention comprises the following steps:

[0049] a) Under normal temperature and pressure, mix 2 parts of emulsifier and 10 parts of water in an emulsifying tank, after fully stirring and dissolving, add styrene, butyl acrylate, acrylic acid, and cross-linking monomer in the formula ...

Embodiment 2

[0057] The ultra-low VOC content styrene-acrylic emulsion of the present invention comprises, in parts by mass: 90 parts of water, 8 parts of emulsifier, 25 parts of styrene, 30 parts of butyl acrylate, 2 parts of acrylic acid, and 2 parts of cross-linking monomers. , 0.3 part of persulfate, 0.2 part of oxidant and 0.4 part of reducing agent.

[0058] The emulsifier is sodium ethoxylated alkyl sulfate.

[0059] The crosslinking monomer is trimethylolpropane trimethacrylate.

[0060] The persulfate is potassium persulfate.

[0061] The oxidant is hydrogen peroxide.

[0062] The reducing agent is ascorbic acid.

[0063] The preparation method of the ultra-low VOC content styrene-acrylic emulsion of the present invention comprises the following steps:

[0064] a) Under normal temperature and pressure, mix 3 parts of emulsifier and 12 parts of water in an emulsifying tank. After fully stirring and dissolving, add styrene, butyl acrylate, acrylic acid, and cross-linking monomer...

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Abstract

The invention discloses styrene acrylic emulsion containing ultralow VOC content. The styrene acrylic emulsion containing ultralow VOC comprises, by mass, 80-130 parts of water, 5-20 parts of emulsifier, 20-50 parts of styrene, 20-50 parts of butyl acrylate, 0.5-5 parts of acrylic acid, 1-5 parts of cross-linking monomer, 0.2-1 part of persulfate, 0.1-1 part of oxidizing agent, and 0.2-1 part of reducing agent. The styrene acrylic emulsion containing the ultralow VOC content is environmentally friendly and pure in smell, and the VOC content is extremely low.

Description

technical field [0001] The invention relates to a styrene-acrylic emulsion, in particular to a styrene-acrylic emulsion with ultra-low VOC content and a preparation method thereof, belonging to the technical field of architectural coatings. Background technique [0002] With the improvement of living standards, people's demand for environmental protection and clean taste in the living environment is increasing. China's "Hazardous Substance Content of Interior Decoration Materials" stipulates that the VOC content in wall paint must be ≤ 200g / L; environmental labeling certification standards It is also required that the VOC content of wall paint after water removal should be ≤80g / L; the standards of developed countries are more stringent, such as the VOC content of wall paint in the EU standard should be ≤75g / L. [0003] At present, most of the commonly used styrene-acrylic emulsions on the market have high VOC content. When used as architectural coatings, their VOC content is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F230/08C08F222/14C08F220/40C08F2/26C09D125/14C09D133/08
CPCC09D125/14C09D133/08C08F2/26C08F212/08C08F220/18C08F220/1804C08F220/06C08F230/08C08F222/103C08F220/40
Inventor 李文浩罗云
Owner 佛山市顺德区巴德富实业有限公司
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