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Pure styrene-acrylic architectural emulsion and preparing method thereof

A styrene-acrylic construction and emulsion technology, applied in the coating and other directions, can solve the problems of affecting the normal progress of the polymerization reaction, reducing the stability of the emulsion, affecting the storage stability, etc. performance effect

Inactive Publication Date: 2019-11-05
北京通海工贸有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The solid content is an important indicator of the average styrene-acrylic emulsion. The solid content is the mass percentage of the remaining part of the emulsion or paint after drying under specified conditions. The increase of the solid content can effectively reduce the drying time during use, but the solid content When the content increases, the amount of water added in the reaction will inevitably decrease, resulting in an increase in the particle size of the emulsion, reducing the stability of the emulsion, and also increasing the viscosity of the emulsion, which not only affects the storage stability, but also may affect the normal progress of the polymerization reaction. Therefore, be badly in need of researching a kind of styrene-acrylic emulsion of high solid content, low viscosity, low particle size, to be suitable for in flat latex paint, semi-gloss latex paint

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  • Pure styrene-acrylic architectural emulsion and preparing method thereof
  • Pure styrene-acrylic architectural emulsion and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A kind of pure styrene-acrylic building emulsion, its raw material ratio is shown in Table 1, Table 2;

[0043] (1) In the mixing kettle, water, allyloxy hydroxypropyl sulfonate sodium reactive emulsifier, and sodium bicarbonate are mixed evenly to obtain the solution at the bottom of the kettle, which is set aside;

[0044] (2) In another mixing tank, mix water, compound emulsifier, n-butyl acrylate, styrene, acrylamide, and acrylic acid evenly, and the weight ratio of n-butyl acrylate and styrene is 1:1 , to obtain a mixed monomer solution for subsequent use;

[0045] (3) Add still bottom solution in reactor, and under the condition that temperature is 83 ℃, add initial initiator in the still bottom solution in reactor, initial initiator selects mass fraction for use and is the ammonium persulfate solution of 18.33% , and the initial initiator was prepared 30 minutes before adding to the reactor, the temperature was controlled at 86°C, and then the mixed monomer solu...

Embodiment 2

[0050] A kind of pure styrene-acrylic building emulsion, its raw material ratio is shown in Table 1, Table 2;

[0051] (1) In the mixing kettle, water, allyloxy hydroxypropyl sulfonate sodium reactive emulsifier, and sodium bicarbonate are mixed evenly to obtain the solution at the bottom of the kettle, which is set aside;

[0052] (2) In another mixing tank, mix water, compound emulsifier, n-butyl acrylate, styrene, acrylamide, and acrylic acid evenly, and the weight ratio of n-butyl acrylate and styrene is 1:1 , to obtain a mixed monomer solution for subsequent use;

[0053] (3) Add still bottom solution in reactor, and under the condition that temperature is 83 ℃, add initial initiator in the still bottom solution in reactor, initial initiator selects mass fraction for use and is the ammonium persulfate solution of 18.33% , and the initial initiator was prepared 20 minutes before adding to the reactor, the temperature was controlled at 86°C, and then the mixed monomer solu...

Embodiment 3

[0058] A kind of pure styrene-acrylic building emulsion, its raw material ratio is shown in Table 1, Table 2;

[0059] (1) In the mixing kettle, water, allyloxy hydroxypropyl sulfonate sodium reactive emulsifier, and sodium bicarbonate are mixed evenly to obtain the solution at the bottom of the kettle, which is set aside;

[0060] (2) In another mixing tank, mix water, compound emulsifier, n-butyl acrylate, styrene, acrylamide, and acrylic acid evenly, and the weight ratio of n-butyl acrylate and styrene is 1:1 , to obtain a mixed monomer solution for subsequent use;

[0061] (3) Add still bottom solution in reactor, and under the condition that temperature is 83 ℃, add initial initiator in the still bottom solution in reactor, initial initiator selects mass fraction for use and is the ammonium persulfate solution of 18.33% , and the initial initiator was prepared 10 minutes before adding to the reactor, the temperature was controlled at 86°C, and then the mixed monomer solu...

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Abstract

The invention relates to a pure styrene-acrylic architectural emulsion and a preparing method thereof, and belongs to the technical field of styrene-acrylic emulsions. The pure styrene-acrylic architectural emulsion comprises water, a compound emulsifier, n-butyl acrylate, styrene, acrylamide, acrylic acid, a kettle bottom solution, a primary initiator, a reaction initiator, a methacryloyloxyethyltrimethyl ammonium chloride solution, an oxidant, a reducing agent, a defoaming agent and a fungicide. The kettle bottom solution comprises water, a reaction emulsifier and sodium bicarbonate. The weight ratio of n-butyl acrylate to styrene is 1:1, and the mass percentage of the methacryloyloxyethyl trimethyl ammonium chloride solution is 1.78%. The pure styrene-acrylic architectural emulsion hasthe advantages of being high in solid content, low in viscosity and low in particle size and is suitable for matt latex paint and semi-matt latex paint.

Description

technical field [0001] The invention relates to the technical field of styrene-acrylic emulsion, more specifically, it relates to a pure styrene-acrylic building emulsion and a preparation method thereof. Background technique [0002] Styrene-acrylic emulsion is obtained by emulsion copolymerization of styrene and butyl acrylate monomers. Styrene-acrylic emulsion is a system that has been studied more in emulsion polymerization, and it is also one of the top ten non-crosslinked emulsions with important industrial application value in the world today. . As an important class of intermediate chemical products, styrene-acrylic emulsion has a very wide range of uses. It is mainly used as architectural coatings, metal surface latex coatings, floor coatings, paper adhesives, adhesives, etc. The solid content is an important indicator of the average styrene-acrylic emulsion. The solid content is the mass percentage of the remaining part of the emulsion or paint after drying under ...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/08C08F220/56C08F220/06C08F220/34C08F228/02C08F2/24C08F2/26C08F2/30C08F4/40C09D125/14C09D133/08
CPCC08F212/08C08F220/18C09D125/14C09D141/00
Inventor 王正
Owner 北京通海工贸有限公司
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