Pure-acrylic emulsion with low VOC and preparation method thereof

A technology of pure acrylic emulsion and emulsion, which is applied in the field of polymer emulsion, can solve problems affecting the health of residents and indoor environmental pollution in housing, and achieve the effects of good environmental performance, low odor, and content reduction

Active Publication Date: 2010-05-12
上海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

my country's "Content of Harmful Substances in Interior Decoration Materials" stipulates that the VOC content in wall paint must be ≤ 200 g / l; the environmental label certification standard also requires that the VOC content of wall paint after water removal must be ≤ 80 g / l; but The VOC content of the current architectural coatings generally exceeds the above standards, causing pollution to the indoor environment of houses and seriously affecting the health of residents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The present embodiment is made by following raw material proportioning, calculates by weight percentage:

[0037] Methyl methacrylate 20%, butyl acrylate 15%, isooctyl acrylate 7%, acrylic acid 1%, potassium dodecyl diphenyl oxide disulfonate 3%, ammonium persulfate 0.2%, potassium persulfate 0.2%, sodium persulfate 0.1%, hydrogen peroxide 0.3%, ascorbic acid (vitamin C) 0.2% and water 53%.

[0038] Its preparation method comprises the following steps:

[0039] (1), synthesis stage

[0040] a. Preparation of the pre-emulsion, add 30% of the formula amount of water and 40% of the formula amount of emulsifier into the emulsification tank, turn on the agitator, the speed is 300Hz, put in the formula amount of monomers in turn, and stir for 30 minutes;

[0041] b. Pass nitrogen into the reactor to remove the air, add 70% of the formula water and 60% of the formula emulsifier, stir evenly, and heat up to 80°C; put in 10% pre-emulsion, and stir for 10 minutes;

[0042] c. ...

Embodiment 2

[0051] The present embodiment is made by following raw material proportioning, calculates by weight percentage:

[0052] Methyl methacrylate 20%, butyl acrylate 10.75%, isooctyl acrylate 10%, acrylic acid 0.5%, sodium dodecyl diphenyl oxide disulfonate 3%, lauryl polyoxyethylene ether Potassium sulfate 2%, ammonium persulfate 0.3%, hydrogen peroxide 0.2%, ascorbic acid (vitamin C) 0.25% and water 53%.

[0053] Its preparation method is identical with embodiment 1.

Embodiment 3

[0055] The present embodiment is made by following raw material proportioning, calculates by weight percentage:

[0056] Methyl methacrylate 25%, Butyl acrylate 10%, Isooctyl acrylate 7.45%, Acrylic acid 0.7%, Potassium dodecyl diphenyl oxide disulfonate 2%, Lauryl polyoxyethylene ether sulfuric acid Sodium 1%, ammonium persulfate 0.2%, potassium persulfate 0.2%, hydrogen peroxide 0.3%, ascorbic acid (vitamin C) 0.2% and water 53%.

[0057] Its preparation method is identical with embodiment 1.

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Abstract

The invention discloses a pure-acrylic emulsion with low VOC and a preparation method thereof. The pure-acrylic emulsion is mainly used for preparing indoor paint and the formulation thereof comprises: 20-25% of methyl methacrylate, 10-15% of butyl acrylate, 7-10% of ethyl hexyl acrylate, 0.5-1% of crylic acid, 1-5% of emulsifier, 0.3-0.5% of persulfate, 0.2-0.3 of oxidant, 0.15-0.25% of reducing agent and 53% of water. The preparation method comprises the following steps: selecting monomers with similar reactivity ratio to carry out emulsion polymerization, and then adopting a redox system to carry out after-treatment on the emulsion so as to further reduce the content of residual monomers. According to measurement, the VOC content of the polymerization emulsion is less than or equal to 30(g / L) and far below the national regulation.

Description

technical field [0001] The invention relates to architectural coatings, in particular to a polymer emulsion for preparing architectural coatings and a preparation method thereof. Background technique [0002] In recent years, with the improvement of living standards, people pay more and more attention to the decoration of houses, but the accompanying indoor environmental pollution is also becoming more and more serious. The source of indoor environmental pollution is mainly the volatile organic compounds VOC produced by latex paint, wallpaper, floor, heat insulation materials, adhesives and other decoration materials in our living room, including formaldehyde, ammonia, ethylene glycol, esters, etc. substance. my country's "Content of Harmful Substances in Interior Decoration Materials" stipulates that the VOC content in wall paint must be ≤ 200 g / l; the environmental label certification standard also requires that the VOC content of wall paint after water removal must be ≤ ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C08F2/24C08F6/16C09D133/12
Inventor 杨文滔罗宇
Owner 上海巴德富实业有限公司
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