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Water-based gloss oil prepared from acroleic acid emulsion having nucleocapsid structure

A technology of acrylic emulsion and water-based varnish, which is applied in latex paint and other directions

Inactive Publication Date: 2010-12-15
恒昌涂料(惠阳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a serious problem in the application of general water-based varnishes, that is, in order to improve the film-forming performance, a large amount of film-forming aids need to be added, and the dosage can reach more than 30% of the solvent part, or even more. Auxiliaries are generally high-boiling-point solvents, which will also pollute the environment. They are not environmentally friendly water-based products in the true sense. A large amount of film-forming additives will also increase the cost of varnish.
If no film-forming aids are added, soft polymers with a low glass transition temperature must be used to ensure film-forming properties. The resulting problem is that it is easy to stick to flowers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of acrylic emulsion with core-shell structure. The core layer is polymerized first and then the shell layer is polymerized. It is mainly prepared by the following steps:

[0024] A. Synthesis of seed emulsion core layer structure: Add deionized water, buffer, emulsifier, and core layer monomer into a reactor equipped with stirring equipment, thermometer, condenser and feeding device. The speed of emulsification is 200 rpm / Min, the emulsification time is 30min and then the temperature is raised to 80±2℃, the initiator solution is added to initiate the reaction, and the seed emulsion is prepared. After the reaction does not significantly reflux, the temperature is kept for 40min;

[0025] B. Synthesis of shell polymer: In the emulsion obtained in step A, drop the shell monomer and initiator solution. The monomer dripping time is 2.5h, and the initiator solution dripping time is about 3h. After the addition, use 5 Rinse the feeding device with a portion of...

Embodiment 2

[0032] A preparation method of acrylic emulsion with core-shell structure. The core layer is polymerized first and then the shell layer is polymerized, which is mainly prepared by the following steps:

[0033] A. Synthesis of seed emulsion core layer structure: Add deionized water, buffer, emulsifier, and core layer monomer into a reactor equipped with stirring equipment, thermometer, condenser and feeding device. The speed of emulsification is 200 rpm / Min, the emulsification time is 50 minutes and then the temperature is raised to 81°C, the initiator solution is added to initiate the reaction, and the seed emulsion is prepared. After the reaction does not significantly reflux, the temperature is kept for 40 minutes;

[0034] B. Synthesis of shell polymer: In the emulsion obtained in step A, add shell monomer and initiator solution dropwise. The monomer drop time is 2.5h, the initiator solution drop time is about 3h, and then the temperature is kept for 33min. Increase the tempera...

Embodiment 3

[0041] A preparation method of acrylic emulsion with core-shell structure. The core layer is polymerized first and then the shell layer is polymerized, which is mainly prepared by the following steps:

[0042] A. Synthesis of seed emulsion core layer structure: Add deionized water, buffer, emulsifier, and core layer monomer into a reactor equipped with stirring equipment, thermometer, condenser and feeding device. The speed of emulsification is 200 rpm / Min, the emulsification time is 40 minutes and then the temperature is raised to 85°C, the initiator solution is added to initiate the reaction, and the seed emulsion is prepared. After the reaction does not significantly reflux, the temperature is maintained for 40 minutes.

[0043] B. Synthesis of shell polymer: In the emulsion obtained in step A, add shell monomer and initiator solution dropwise. The monomer drop time is 2.5h, the initiator solution drop time is about 3h, and then the temperature is kept for 50min. Increase the t...

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PUM

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Abstract

The invention relates to a preparation method of a nuclear shell structural acrylic acid emulsion, and the acrylic acid emulsion and water based gross oil prepared. The preparation steps are as follows: step A: deioned water, a buffering agent, an emulsifier and a nuclear layer monomer are added into a reactor, and emulsified and heated to 80 plus or minus 5 DEG C, added with an initiator to initiate the reaction so as to prepare seed emulsion; step B: the prepared emulsion is dropwise added with a shell layer monomer and the solution of the initiator, the temperature is raised by 3 to 5 DEG C for thermal insulation again after thermal insulation. Alkaline soluble resin is completely added into the reactor when the first lot of components are added into the reactor in step A, or completely added when the temperature is cooled to 50 plus or minus 5 DEG C in step B, or part is added when the first lot of components are added into the reactor in step A and the remained part is added whenthe temperature is cooled to 50 plus or minus 5 DEG C in step B. The prepared acrylic acid emulsion has low production cost, good mechanical stability and high freezing and thawing stability; the water based gross oil prepared from the acrylic acid emulsion has the advantages of good transparency and adhesive force, no odor and excellent storage stability, etc.

Description

technical field [0001] The invention relates to an acrylic emulsion and its application, in particular to an acrylic emulsion with a core-shell structure and its application. Background technique [0002] With the strengthening of people's awareness of environmental protection, in the field of post-press processing, the proportion of water-based varnish is increasing. However, there is a serious problem in the application of general water-based varnishes, that is, in order to improve the film-forming performance, a large amount of film-forming aids need to be added, and the dosage can reach more than 30% of the solvent part, or even more. Auxiliaries are generally high-boiling-point solvents, which will also pollute the environment. They are not environmentally friendly water-based products in the true sense. A large amount of film-forming auxiliaries will also increase the cost of varnish. If no film-forming aid is added, a soft polymer with a low glass transition tempera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L25/08C08F220/10C08F212/08C08F2/24C09D133/04C09D125/08C09D5/02
Inventor 杨爱军李江涛
Owner 恒昌涂料(惠阳)有限公司