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Self-crosslinking epoxy/polyacrylate composite soap-free emulsion and preparation technology thereof

A polyacrylate, soap-free emulsion technology, applied in the direction of coating, can solve the problems of unsatisfactory adhesion, limited application range, poor stain resistance, etc., to improve physical properties and chemical resistance, good physical-chemical properties , good bonding performance

Inactive Publication Date: 2017-12-12
SHANGHAI BAOQING TONGYONG ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although ordinary acrylate emulsion has the advantages of excellent weather resistance, film-forming property, cheap price, and simple synthesis method, it also has disadvantages such as low hardness, easy back-sticking at high temperature, poor water resistance, poor stain resistance, and unsatisfactory adhesion. Therefore, its application range is greatly limited

Method used

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  • Self-crosslinking epoxy/polyacrylate composite soap-free emulsion and preparation technology thereof
  • Self-crosslinking epoxy/polyacrylate composite soap-free emulsion and preparation technology thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation process of cross-linked epoxy / polyacrylate composite soap-free emulsion:

[0039] (1) Preparation of core and shell pre-emulsion

[0040] Add 0.2 parts of emulsifier V-20S, 0.1 parts of emulsifier AE200 and 10 parts of deionized water into the reaction kettle, stir evenly, heat up to 50°C, slowly add 3 parts of E51 epoxy resin, 12 parts of methyl The nuclear monomer of methyl acrylate and 7 parts of butyl acrylate was dropped within 60 minutes, and pre-emulsified for 30 minutes to obtain a nuclear pre-emulsion.

[0041] Add 0.3 parts of emulsifier V-20S, 0.15 parts of AE200 and 15 parts of deionized water into the reaction kettle, stir evenly, raise the temperature to 50°C, and start to add 5 parts of DAAM, 9 parts of methyl methacrylate, 13 Parts of butyl methacrylate, 3 parts of methacrylic acid shell monomer, drop in 60 minutes, and pre-emulsify for 30 minutes to obtain shell pre-emulsion.

[0042] (2) Preparation of core-shell emulsion

[0043]Get 1...

Embodiment 2

[0047] A preparation process of cross-linked epoxy / polyacrylate composite soap-free emulsion:

[0048] (1) Preparation of core and shell pre-emulsion

[0049] Add 0.3 parts of emulsifier V-20S and 10 parts of deionized water into the reaction kettle, stir evenly, raise the temperature to 50°C, slowly add 5 parts of E44 epoxy resin, 12 parts of methyl methacrylate, and 7 parts of acrylic acid The nuclear monomer of butyl ester was dropped within 60 minutes, and pre-emulsified for 30 minutes to obtain the nuclear pre-emulsion.

[0050] Add 0.5 parts of emulsifier V-20S and 15 parts of deionized water into the reaction kettle, stir evenly, raise the temperature to 50°C, and start adding 3 parts of DAAM, 10 parts of methyl methacrylate, and 12 parts of butyl methacrylate dropwise. ester, 2 parts of methacrylic acid shell monomer, dripped in 60 minutes, and pre-emulsified for 30 minutes to obtain a shell pre-emulsion.

[0051] (2) Preparation of core-shell emulsion

[0052] Take...

Embodiment 3

[0056] A preparation process of cross-linked epoxy / polyacrylate composite soap-free emulsion:

[0057] (1) Preparation of core and shell pre-emulsion

[0058] Add 0.3 parts of emulsifier M-20S and 10 parts of deionized water into the reaction kettle, stir evenly, raise the temperature to 50°C, slowly add 5 parts of E51 epoxy resin, 11 parts of methyl methacrylate, and 5 parts of acrylic acid The nuclear monomer of butyl ester was dropped within 60 minutes, and pre-emulsified for 30 minutes to obtain the nuclear pre-emulsion.

[0059] Add 0.5 parts of emulsifier M-20S and 15 parts of deionized water into the reaction kettle, stir evenly, raise the temperature to 50°C, and start adding 4 parts of DAAM, 9 parts of methyl methacrylate, and 12 parts of butyl methacrylate dropwise. ester, 3 parts of methacrylic acid shell monomer, dripped in 60 minutes, and pre-emulsified for 30 minutes to obtain a shell pre-emulsion.

[0060] (2) Preparation of core-shell emulsion

[0061] Take ...

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Abstract

The invention discloses self-crosslinking epoxy / polyacrylate composite soap-free emulsion and a preparation technology thereof. The composite soap-free emulsion comprises the raw materials of acrylic, epoxy resin, acrylic monomer, diacetone acrylamide and adipic dihydrazide. The preparation technology comprises the following steps: firstly preparing nuclear and shell pre-emulsion; then preparing core-shell emulsion. As the molecular chain of the emulsion adopts a net structure, and the advantages of epoxy resin and acrylic emulsion are combined, the emulsion has the advantages of good water resistance, staining resistance and mechanical property and excellent paint film comprehensive performance, and greatly extends the application range of the acrylic emulsion.

Description

technical field [0001] The invention relates to a crosslinking epoxy / polyacrylate composite soap-free emulsion and a preparation process thereof, in particular to a self-crosslinking water-based one-component coating and a preparation method thereof. Background technique [0002] As one of the main categories of polymer emulsions, polyacrylate emulsion refers to the copolymerization of acrylate monomers and methacrylate monomers, or emulsions prepared by emulsion self-polymerization or copolymerization with other vinyl monomers. The solid content is generally in the range of 40% to 50%. With the application of polyacrylate copolymer emulsion and the increasing environmental protection requirements, water-based acrylate copolymer emulsion is gradually replacing solvent-based acrylic resin as an important part of coatings, adhesives, leather, ink and textile industries, especially Is the application on the coating. Polyacrylate emulsion has the advantages of easy synthesis, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F283/06C08F220/14C08F220/18C08F220/06C08F220/58C08F2/26C08F2/30C09D151/08
CPCC08F283/10C08F2/26C08F2/30C08F283/065C09D151/08C08F220/14
Inventor 刘农强雅重庆陆顺平
Owner SHANGHAI BAOQING TONGYONG ELECTRICAL
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