Modified potassium silicate styrene-acrylic emulsion and preparation method thereof as well as preservative-free and solvent-free water-based polymer material and preparation method thereof

A water-based polymer, styrene-acrylic emulsion technology, applied in coatings and other directions, can solve the problems of high efflorescence risk, human and environmental hazards, large organic solvents, etc., and achieve excellent anti efflorescence and low VOC effects.

Pending Publication Date: 2022-03-18
德爱威(中国)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pH value of the vinyl ester copolymer used in this preservative-free coating agent is 4.4, and no additional preservatives are added during storage to achieve it by directly adding potassium silicate in the formula, which has a high pan-saline alkalinity risk
And it needs to add film-forming aids to assist film-forming during use. In actual use, a large amount of organic solvents will be introduced, causing harm to the human body and the environment.

Method used

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  • Modified potassium silicate styrene-acrylic emulsion and preparation method thereof as well as preservative-free and solvent-free water-based polymer material and preparation method thereof
  • Modified potassium silicate styrene-acrylic emulsion and preparation method thereof as well as preservative-free and solvent-free water-based polymer material and preparation method thereof
  • Modified potassium silicate styrene-acrylic emulsion and preparation method thereof as well as preservative-free and solvent-free water-based polymer material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0067] This embodiment provides a modified potassium silicate styrene-acrylic emulsion and a preparation method thereof, the preparation method of which is:

[0068] (1) Mixing and reacting the first part of the quaternary ammonium salt containing unsaturated double bonds, organosilicon-modified potassium silicate, and the first part of water at 35° C. to obtain the first mixed solution;

[0069] (2) Mix the first part of emulsifier, sodium bicarbonate, methyl methacrylate, butyl acrylate, the second part of quaternary ammonium salt containing unsaturated double bonds and styrene with the second part of water to obtain the second mixed solution ;

[0070] (3) Mix the second part of emulsifier with the third part of water, control the system temperature to 75°C, then mix with the first part of potassium persulfate, the first part of the second mixed solution, and the first part of the silane coupling agent to obtain the third mixed solution;

[0071] (4) Add dropwise the seco...

Embodiment 2、 comparative example 1～5

[0084] Example 2 provides a preservative-free and solvent-free water-based polymer material and a preparation method thereof, and Comparative Examples 1-5 provide a water-based polymer material. The dosage of each component is shown in Table 1 (parts by weight).

[0085] Table 1

[0086]

[0087]

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Abstract

The invention belongs to the field of water-based polymer materials, and particularly relates to a modified potassium silicate styrene-acrylic emulsion and a preparation method thereof as well as a preservative-free and solvent-free water-based polymer material and a preparation method thereof. The modified potassium silicate styrene-acrylic emulsion comprises methyl methacrylate, butyl acrylate, styrene, sodium bicarbonate, potassium persulfate, an emulsifier, a silane coupling agent, quaternary ammonium salt containing unsaturated double bonds, organic silicon modified potassium silicate, protective glue and water. The preservative-free solvent-free water-based polymer material provided by the invention is not added with preservatives and organic solvents, has extremely low VOC (Volatile Organic Compounds), SVOC (Soluble Volatile Organic Compounds) and TVOC (Total Volatile Organic Compounds), does not detect free formaldehyde, and has the characteristics of excellent alkali burnout resistance, alkali burnout resistance, storage stability and the like.

Description

technical field [0001] The invention belongs to the field of water-based polymer materials, and more specifically relates to a modified potassium silicate styrene-acrylic emulsion and a preparation method thereof, and a preservative-free and solvent-free water-based polymer material and a preparation method thereof. Background technique [0002] Water-based coatings use water as the dispersion medium and are rich in nutrients available to many microorganisms such as cellulose and emulsion. Under suitable temperature and humidity conditions, water-based coatings are prone to breed a large number of bacteria, fungi, molds and other microorganisms. They not only pollute the coating, but also seriously affect the quality of the coating, which further leads to abnormal viscosity, poor fluidity, serious delamination, mildew, and Odor etc. According to the existing technology, water-based paints are often added with preservatives and antifungal agents to prevent the production of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/38C08F230/08C09D133/08C09D125/14C09D7/62C09D7/20
CPCC08F220/1804C08F212/08C09D133/08C09D125/14C09D7/62C09D7/20C08F220/14C08F220/387C08F230/085C08K9/06C08K3/34
Inventor 胡蝶柯鹏飞张麟敏刘循超王燕
Owner 德爱威(中国)有限公司
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