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A kind of metal cross-linked acrylate emulsion and preparation method thereof

An acrylate and metal cross-linking technology, which is applied in the field of architectural coatings, can solve the problems of unstable reaction and late storage stability, and achieve the effect of ensuring storage stability, ensuring stability and good performance

Active Publication Date: 2019-05-28
成都巴德富科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes unstable reaction during emulsion preparation and storage stability in later period

Method used

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  • A kind of metal cross-linked acrylate emulsion and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0054] A kind of metal cross-linked acrylate emulsion is prepared by comprising the following steps carried out in sequence:

[0055] (1) Under normal temperature and pressure, add 1 part of sodium dodecyl diphenyl ether disulfonate and 20 parts of water into the emulsification tank, stir with a disperser for 5 minutes to make it fully mixed, and then add 30 parts of methacrylic acid in turn Methyl ester, 15 parts of isooctyl acrylate, 5 parts of styrene, 2 parts of methacrylic acid, 1 part of vinyltrimethoxysilane, 1 part of allyl methacrylate, use a disperser to stir for 20 minutes to make it fully mixed, That is, a pre-emulsion is made.

[0056] (2) Add 1 part of sodium dodecyl diphenyl ether disulfonate and 80 parts of water into a four-necked flask, heat up to 75°C, stir at 5-20r / min for 15 minutes, and dropwise add 1) The prepared pre-emulsion, 0.1 part of sodium persulfate dissolved in 5 parts of water, undergo polymerization reaction, the reaction temperature is 80 ° ...

Embodiment 2

[0065] A kind of metal cross-linked acrylate emulsion is prepared by comprising the following steps carried out in sequence:

[0066] (1) Under normal temperature and pressure, add 1 part of sodium dodecyl diphenyl ether disulfonate and 25 parts of water into the emulsification tank, stir for 5 minutes with a disperser to make it fully mixed, and then add 36 parts of methacrylic acid in turn Methyl ester, 20 parts of isooctyl acrylate, 7 parts of styrene, 4 parts of methacrylic acid, 4 parts of γ-methacryloxypropyltrimethoxysilane, stir for 20 minutes with a disperser to make it fully mixed, that is Make a pre-emulsion.

[0067] (2) Add 2 parts of sodium dodecyl diphenyl ether disulfonate and 75 parts of water into a four-necked flask, heat up to 79°C, stir at 5-20r / min for 20 minutes, and dropwise add 1) The prepared pre-emulsion, 0.2 parts of persulfate dissolved in 7 parts of water, carry out polymerization reaction, the reaction temperature is 83 ° C, the dropping time is...

Embodiment 3

[0077] A kind of metal cross-linked acrylate emulsion is prepared by comprising the following steps carried out in sequence:

[0078] (1) Under normal temperature and pressure, add 2 parts of sodium dodecyl diphenyl ether disulfonate and 30 parts of water into the emulsification tank, stir for 5 minutes with a disperser to make it fully mixed, and then add 42 parts of methacrylic acid in turn Methyl ester, 25 parts of isooctyl acrylate, 9 parts of styrene, 6 parts of methacrylic acid, 2 parts of vinyltrimethoxysilane, 4 parts of γ-methacryloxypropyltrimethoxysilane, using a disperser Stir for 20 minutes to make it fully mixed, that is, to make a pre-emulsion.

[0079] (2) Add 2 parts of sodium dodecyl diphenyl ether disulfonate and 70 parts of water into a four-necked flask, raise the temperature to 83°C, stir at a speed of 5-20r / min for 25 minutes, and simultaneously dropwise add 1) The prepared pre-emulsion, 0.3 parts of persulfate dissolved in 8 parts of water, undergo pol...

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Abstract

The invention discloses a metal cross-linked acrylate emulsion and a preparation method thereof, and belongs to the field of building coatings. The metal cross-linked acrylate emulsion is prepared from the following raw materials in parts by weight: 30 to 54 parts of methyl methacrylate, 15 to 35 parts of 2-ethylhexyl acrylate, 5 to 13 parts of styrene, 2 to 10 parts of methacrylic acid, 10 to 30 parts of zinc ammonia solution, 2 to 10 parts of a functional monomer, 2 to 6 parts of an emulsifying agent, 0.1 to 0.5 part of persulfate, 0.1 to 0.5 part of an oxidant, 0.1 to 0.5 part of a reducing agent, and 125 to 150 parts of water. The zinc ammonia solution contains 10 to 30 mass percent of zinc oxide; the functional monomer is at least one of vinyl trimethoxy silane, gamma-methacryloxy propyl trimethoxyl silane and allyl methacrylate; the emulsifying agent is sodium alkyl diphenyl ether disulfonate. The metal cross-linked acrylate emulsion disclosed by the invention has excellent rubbing property and after-tackiness resistance.

Description

technical field [0001] The invention relates to a metal crosslinked acrylate emulsion and a preparation method thereof, in particular to a metal crosslinked acrylate emulsion which is easy to polish and anti-sticking back and a preparation method thereof, and belongs to the field of architectural coatings. Background technique [0002] In recent years, with the continuous enhancement of people's awareness of environmental protection and the shortage of energy sources, water-based wood and utensil coatings have attracted more and more attention and favor. Acrylate emulsion is widely used for its excellent gloss and color retention, weather resistance and mechanical properties. However, conventional acrylate emulsions have disadvantages such as high film forming temperature, low paint film hardness, poor anti-adhesion, and poor water whitening resistance. Therefore, cross-linking modification is usually required to improve its various properties. Polymers cross-linked by met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F220/06C08F220/40C08F230/08C08F8/42C08F2/26C08F4/40
CPCC08F2/26C08F4/40C08F8/42C08F220/14C08F2800/00C08F2810/20C08F220/1808C08F212/08C08F220/06C08F220/40C08F230/08
Inventor 韦荣正曾庆乐杨文涛
Owner 成都巴德富科技有限公司
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