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A coating film former with fast surface drying performance and preparation method thereof

A technology of film formers and coatings, applied in the direction of coatings, etc., can solve the problems of not being able to meet the needs of rapid surface drying, and achieve the effects of high glass transition temperature, good gloss fullness, and high hardness

Active Publication Date: 2022-02-11
邯郸市汇百川化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two-component polyurethane water-based paint can effectively achieve this purpose by using a fast-drying isocyanate cross-linking curing agent. The one-component self-drying water-based paint can also use the emulsion method to synthesize a larger molecular weight film-forming substance to increase the drying speed, while For amino water-based baking varnish, there are many defects, and it still cannot meet the requirements of fast surface drying. It needs higher temperature baking to effectively improve the drying speed.

Method used

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  • A coating film former with fast surface drying performance and preparation method thereof
  • A coating film former with fast surface drying performance and preparation method thereof

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preparation example Construction

[0031] A method for preparing a coating film former with fast surface drying performance, comprising the following steps:

[0032] 1) Add film-forming aids to the reaction flask and raise the temperature to 150-155 °C;

[0033] 2) Mix acrylate monomer, crosslinking monomer, amine unsaturated monomer and isocyanate crosslinking agent;

[0034] 3) Add the monomer in step 2) dropwise into the reaction flask and stir for reaction. After the dropwise addition, keep stirring for 2 h;

[0035] 4) Cool down to 80 ℃, add amino alcohol compound;

[0036] 5) Add deionized water dropwise within 1 hour. After the dropwise addition, stir and disperse for 2 hours to obtain a coating film-former.

Embodiment 1

[0037] Embodiment 1: film-forming aid: S-100 solvent naphtha 4%, ethylene glycol butyl ether 4%; Acrylic monomer: methyl methacrylate 32.2%; Self-crosslinking monomer: acetoacetoxymethyl Ethyl acrylate 1.8%; amine unsaturated monomer: acrylamide 8%; isocyanate crosslinking agent: toluene diisocyanate 1.5%; amino alcohol compound: dimethylethanolamine 1.4%, and the rest is deionized water.

Embodiment 2

[0038] Embodiment 2: film-forming aid: S-100 solvent naphtha 4%, propylene glycol butyl ether 4%; Acrylic ester monomer: methyl methacrylate 33%; Self-crosslinking monomer: acetoacetoxy ethyl methacrylate Ester 1.2%; amine unsaturated monomer: methylolacrylamide 6%; isocyanate crosslinking agent: toluene diisocyanate 1.5%; amino alcohol compound: triethanolamine 2.4%, and the rest is deionized water.

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Abstract

This case involves a paint film-former with fast surface drying performance and its preparation method. The raw materials used in the paint film-former include film-forming aids, acrylate monomers, isocyanate crosslinking agents, alcohol amino compounds and deionized water , and introducing self-crosslinking monomers and amine unsaturated monomers, it can be prepared by conventional polymerization means. The preparation method of amino water-based baking varnish provided by the present invention has easy-to-obtain raw materials, low cost, simple operation method and high economic value; different from the preparation method of traditional amino water-based baking varnish, self-crosslinking monomer and amine-containing Unsaturated monomer, the prepared paint film has better initial performance, such as water resistance, high hardness, good gloss and fullness of the film after film formation, and good decoration; the paint film-former prepared by the present invention has a faster surface drying speed , Under normal temperature conditions, it can achieve a fast drying speed of 15 minutes, and the glass transition temperature of the coating film-former is relatively high, and the stability is good.

Description

technical field [0001] The invention relates to the field of paint film-formers, in particular, the invention relates to a paint film-former with fast surface-drying performance for amino water-based baking varnishes and a preparation method thereof. Background technique [0002] With the increase of coating production, solvent-based coatings have gradually exposed many disadvantages during the application process, such as the discharge of a large amount of organic solvents, which not only wastes resources but also pollutes the environment. With the strengthening of people's awareness of environmental protection, the research of water-based coatings has been paid more and more attention by people. The water-based technology of coating film formers has been applied relatively maturely, and the chemical properties and physical properties of coating films have also gained better advantages. [0003] At present, the technology of using two-component polyurethane paint, amino ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/56C08F220/28C08F220/58C08F220/32C08F220/18C09D133/12C09D133/08C09D7/63
CPCC08F220/14C08F220/1804C08F220/1802C09D133/26C09D133/24C09D7/63C08F220/56C08F220/282C08F220/58C08F220/325C08K5/29
Inventor 王雯王元有
Owner 邯郸市汇百川化工有限公司