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A kind of modified hydroxyacrylic acid emulsion for water-based iron printing paint and preparation method thereof

A technology of hydroxyacrylic and iron-printing coatings, which is applied in the direction of anti-corrosion coatings and coatings, and can solve problems such as unsatisfactory comprehensive performance

Active Publication Date: 2021-04-27
湖北双键精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the comprehensive properties of the water-based hydroxyacrylic acid emulsions used in water-based iron printing coatings reported in the prior art are not satisfactory, especially in terms of curing speed, solvent resistance and retort resistance. There is a big gap, so it is very meaningful to develop a high-performance hydroxy acrylic emulsion for water-based iron printing coatings

Method used

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  • A kind of modified hydroxyacrylic acid emulsion for water-based iron printing paint and preparation method thereof
  • A kind of modified hydroxyacrylic acid emulsion for water-based iron printing paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 10 parts of deionized water and 0.3 parts of compound emulsifier in turn to the emulsification tank, stir until fully dissolved, then add 11.1 parts of methyl methacrylate, 4.5 parts of styrene, 4.7 parts of butyl acrylate, and 0.2 parts of acrylic acid , 2.0 parts of monomer mixture composed of hydroxyethyl acrylate, stirred at high speed for 30 minutes to obtain white monomer pre-emulsion ①. Similarly, add 10 parts of deionized water and 0.3 parts of compound emulsifier to the emulsification tank in turn, stir until fully dissolved, then add 8.8 parts of methyl methacrylate, 3.5 parts of styrene, 2.0 parts of butyl acrylate, and 0.6 parts of acrylic acid , 4.2 parts of hydroxyethyl acrylate, 1.8 parts of epoxy E51, 1.8 parts of glycidyl methacrylate monomer mixture, stirred at high speed for 30 minutes to obtain white monomer pre-emulsion ① to prepare monomer pre-emulsion ②.

[0034] (2) Add 30 parts of deionized water, 0.3 parts of compound emulsifier, and 0....

Embodiment 2-5

[0038]Prepare Example 2-5 according to the method of Example 1, and its formula composition is shown in the following table.

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Abstract

The invention provides a modified hydroxy acrylic emulsion for water-based iron printing coatings. The above-mentioned modified hydroxy acrylic emulsion for water-based iron printing coatings has a core-shell structure, and different contents of hydroxyl groups are introduced into the core layer and shell layer of latex particles. Wherein the hydroxyl activity of the core layer is higher than that of the shell layer, and at the same time, most of the hydroxyl groups are enriched in the shell layer; the shell layer is introduced with epoxy resin through grafting reaction, and at the same time, a crosslinking monomer is also introduced into the shell layer, the emulsifier Grafted on polymer molecules; prepared by the following methods: (1) preparation of monomer pre-emulsion; (2) preparation of seed emulsion; (3) preparation of core-shell structure emulsion; (4) obtained after filtration Modified hydroxyacrylic emulsion for waterborne iron printing coatings. Compared with conventional water-based hydroxyacrylic emulsions, the water-based iron printing paint provided by the invention has greatly improved curing speed, adhesion, cooking resistance, and solvent resistance.

Description

technical field [0001] The invention relates to a modified hydroxyacrylic acid emulsion, in particular to a modified hydroxyacrylic acid emulsion used for water-based iron printing coatings, and belongs to the field of fine chemicals and preparation methods thereof. Background technique [0002] Water-based iron printing paint refers to the general term for a type of paint applied on tinplate or aluminum, also known as iron printing ink. In recent years, with the development of the food industry and packaging industry, various can products have grown rapidly, so the environmental protection and high performance of water-based iron printing coatings have also attracted more and more attention. At present, the film-forming substances of the most commonly used water-based iron printing coatings are formed by high-temperature baking and curing of hydroxyl-containing resins and amino resins. Among them, the application of amino resins is relatively mature, mainly Cytec 325 and 30...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F265/08C08F220/14C08F220/20C08F2/30C08F2/26C09D187/00C09D5/08
CPCC08F2/26C08F2/30C08F265/08C08G81/024C09D5/08C09D187/005C08F220/14C08F220/20C08L61/20
Inventor 柴广雷木生游仁国
Owner 湖北双键精细化工有限公司
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