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Preparation method of compound organic silicon modified core-shell styrene acrylic latex

A technology of core-shell styrene-acrylic latex and core-shell styrene-acrylic latex, which is applied in the direction of adhesive types, dyeing methods, hydrocarbon copolymer adhesives, etc., and can solve the problem that the surface is easily damaged and the overall performance of the latex cannot be fully obtained. Improve problems such as delamination and delamination to achieve the effect of smooth surface, increased conversion rate and reduced gel rate

Inactive Publication Date: 2019-06-28
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing preparation methods of silicone-modified styrene-acrylic latex, most of them use a single silicone monomer to modify the styrene-acrylic latex, and the overall performance of the latex cannot be fully improved.
In addition, among numerous emulsion polymerization technologies, the core-shell emulsion polymerization technology has been widely used in the field of polymerization of styrene-acrylic emulsions. The soft-core hard-shell latex can be used for printing paints, and the surface is smooth, but the inventors have found that the surface is easily damaged and appears delamination phenomenon

Method used

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  • Preparation method of compound organic silicon modified core-shell styrene acrylic latex
  • Preparation method of compound organic silicon modified core-shell styrene acrylic latex
  • Preparation method of compound organic silicon modified core-shell styrene acrylic latex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A composite silicone modified core-shell styrene-acrylic latex, comprising the following components:

[0056]

[0057] The composite emulsifier is composed of lauryl glucoside and sodium cardanol polyoxyethylene ether sulfonate with a mass ratio of 1:2.

[0058] The composite silicone monomer is composed of γ-methacryloxypropyltrimethoxysilane and vinyltrimethoxysilane with a mass ratio of 1.7:1.

[0059] The buffer reagent is composed of acetic acid and sodium acetate with a mass ratio of 1.4:1 and a concentration of 0.2 mol / L.

[0060] A kind of preparation method of composite organosilicon modified core-shell styrene-acrylic latex of the present invention is carried out by the following operation steps:

[0061] (1) Mix 30g of butyl acrylate, 25g of isooctyl acrylate, 60g of deionized water, 2g of complex emulsifier and 0.2g of isopropanol, and stir for 40 minutes under the action of 40000Hz ultrasonic waves to obtain pre-emulsion A.

[0062] (2) Dissolve 0.4g o...

Embodiment 2

[0070] A composite silicone modified core-shell styrene-acrylic latex, comprising the following components:

[0071]

[0072] The composite emulsifier is composed of lauryl glucoside and sodium cardanol polyoxyethylene ether sulfonate with a mass ratio of 1:2.

[0073] The composite silicone monomer is composed of γ-methacryloxypropyltrimethoxysilane and vinyltrimethoxysilane with a mass ratio of 1.7:1.

[0074] The buffer reagent is composed of acetic acid and sodium acetate with a mass ratio of 1.4:1 and a concentration of 0.2 mol / L.

[0075] A kind of preparation method of composite organosilicon modified core-shell styrene-acrylic latex of the present invention is carried out by the following operation steps:

[0076] (1) Mix 28g of butyl acrylate, 24g of isooctyl acrylate, 60g of deionized water, 2g of complex emulsifier and 0.2g of isopropanol, and stir for 40 minutes under the action of 40000Hz ultrasonic waves to obtain pre-emulsion A.

[0077] (2) Dissolve 0.4g o...

Embodiment 3

[0085] A composite silicone modified core-shell styrene-acrylic latex, comprising the following components:

[0086]

[0087]

[0088] The composite emulsifier is composed of lauryl glucoside and sodium cardanol polyoxyethylene ether sulfonate with a mass ratio of 1:2.

[0089] The composite silicone monomer is composed of γ-methacryloxypropyltrimethoxysilane and vinyltrimethoxysilane with a mass ratio of 1.7:1.

[0090] The buffer reagent is composed of acetic acid and sodium acetate with a mass ratio of 1.4:1 and a concentration of 0.2 mol / L.

[0091] A kind of preparation method of composite organosilicon modified core-shell styrene-acrylic latex of the present invention is carried out by the following operation steps:

[0092] (1) 25g of butyl acrylate, 20g of isooctyl acrylate, 50g of deionized water, 2g of complex emulsifier and 0.2g of isopropanol were mixed, and stirred for 40 minutes under the action of 40000 Hz ultrasonic waves to obtain pre-emulsion A.

[00...

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Abstract

The invention relates to a preparation method of a compound organic silicon modified core-shell styrene acrylic latex. The styrene acrylic latex is prepared from the following raw material in parts byweight: 50-80 parts of styrene, 20-40 parts of butyl acrylate, 15-35 parts of iso-octyl acrylate, 2-6 parts of a compound emulsifying agent, 1-8 parts of compound organic silicon, 0.2-0.6 part of butyl acrylate, 0.2-1.2 parts of potassium persulfate, 0.2-0.6 part of isopropanol and 100-200 parts of deionized water. According to the universal compound organic silicon modified styrene acrylic latex, the deficiencies of a single organic silicon modified styrene acrylic latex can be made up, and the weather resistance is improved; and by utilizing a semi-continuous core-shell emulsion polymerization technique, the gel rate of the emulsion can be decreased in the polymerization process, and the prepared latex can be applied to printing coatings.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a preparation method of composite organosilicon-modified core-shell styrene-acrylic latex. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Styrene-acrylic latexes are widely used in paints, coatings and adhesives because of their special properties, such as good film-forming properties, gloss and transparency, and overall mechanical properties, but their complex components and structures can also cause some question. The mechanical properties of styrene-acrylic latex films are temperature-dependent, and their water resistance and weather resistance are h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F230/08C09D125/14C09J125/14D06P1/52
Inventor 刘月涛朱传聪延晨政哲高传慧武玉民
Owner QINGDAO UNIV OF SCI & TECH
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