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High anti-washing and anti-contamination type outer wall acrylic emulsion and preparation method thereof

An acrylic emulsion, scrub-resistant technology, applied in anti-fouling/underwater coatings, coatings, paints containing biocides, etc., can solve the problems of unsatisfactory effects, unsatisfactory scrubbing and stain resistance, etc. , to achieve significant effect, low surface free energy, and improved stain resistance

Inactive Publication Date: 2012-11-28
上海展辰涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the scrubbing and stain resistance of common exterior wall paints on the market are not very ideal. In recent years, many researchers have carried out a lot of research work to further improve the performance of acrylic emulsion, and the effect is not very satisfactory.

Method used

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  • High anti-washing and anti-contamination type outer wall acrylic emulsion and preparation method thereof
  • High anti-washing and anti-contamination type outer wall acrylic emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～3

[0029] The preparation method of embodiment 1~3 acrylic acid emulsion

[0030] A high scrub resistance and anti-contamination type exterior wall acrylic emulsion, the parts by weight of each raw material of its formula is shown in Table 1.

[0031] Table 1 list of raw materials

[0032]

[0033]

[0034] According to Table 1, the reaction kettle pre-formulation I, the emulsion II, the initiator solution I, the initiator solution II, and the post-addition part were prepared respectively.

[0035] (2) Response

[0036] (1) Add the material in the reactor I to the kettle, start to heat up to 80-85°C, and stop heating;

[0037] (2) Add the materials in the emulsion II into the emulsification tank in a high-speed dispersion state, and stir for 30-40 minutes.

[0038] (3) Prepare initiator I and initiator solution II in advance, add initiator solution I when the temperature of the reaction kettle reaches 80-85°C, then start to add emulsion II and initiator solution II dropw...

Embodiment 4

[0042] The performance of embodiment 4 acrylic emulsion

[0043] Use the emulsion of a certain company on the market and the acrylic emulsion prepared in Examples 1 to 3, and use the same amount to make exterior wall latex paint, and then test the performance. Determination of scrub resistance: refer to the GB / T9266-1988 standard. Determination of stain resistance: refer to GB / T9780-1988 standard. The test results are shown in Table 2.

[0044] Table 2 Properties of Acrylic Emulsion

[0045] Test items

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Abstract

The invention discloses a high anti-washing and anti-contamination outer wall acrylic emulsion and a preparation method thereof. The preparation method comprises a solution preparation and reactions. The solution preparation comprises the steps of adding a reactor pre-formulation into a reactor, closing a cover, stirring, heating until to a temperature 80-85 DEG C; adding materials of an emulsion II into an emulsion pot successively at a high-speed dispersion state, stirring for 30-40 min; adding an initiator solution I when the temperature of the reactor reaches to 80-85 DEG C, and then dropwise adding the emulsion II and an initiator solution II, dripping off in 3-3.5 hours; incubating for 1-1.5 hours at the temperature of 85-86 DEG C after completing the drops, then cooling the reactor to a temperature of 35-40 DEG C; and adding postaddition part materials into the reactor, stirring for 30-40 minutes, filtering and packaging. The acrylic emulsion prepared by the invention has not only anti-washing property but also anti-contamination property.

Description

technical field [0001] The invention belongs to the technical field of chemical coatings, in particular, it relates to a highly scrub-resistant, stain-resistant exterior wall acrylic emulsion and a preparation method thereof. Background technique [0002] At present, the amount of acrylate elastic emulsion used as an external thermal insulation coating in the coating of building walls is increasing day by day. Because of its excellent aging resistance, excellent gloss retention, color retention and environmental adaptability, and because acrylate monomer There are many types, and the glass transition temperature (Tg) of acrylate elastic emulsion is wide. Acrylate emulsion has become the largest paint for architectural coatings. [0003] However, the scrubbing and stain resistance of common exterior wall paints on the market are not ideal. In recent years, many researchers have carried out a lot of research work to further improve the performance of acrylic emulsion, but the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/10C08K5/17C08F220/18C08F220/22C08F2/26C09D133/10C09D5/14
Inventor 于义田刘志刚朱强康芦笙
Owner 上海展辰涂料有限公司
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