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Method for preparing ultraviolet curing polyester acrylic ester prepolymer

A technology of polyester acrylate and ultraviolet light, which is applied in polyester coatings, applications, coatings, etc., can solve the problems of increasing the cost of coating products, and achieve the effects of resource saving, low viscosity, and excellent curing performance

Inactive Publication Date: 2010-06-16
自贡拓利化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only has a great influence on the performance of the cured film, but also increases the cost of the coating product

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with embodiment.

[0017] The preparation method of ultraviolet curing polyester acrylate prepolymer of the present invention, it comprises the following steps:

[0018] (1) material preparation-preparation according to the following components and molar ratio: adipic acid: 1,4-butanediol: pentaerythritol: dimethylol propionic acid: acrylic acid=0.9~1.1: 0.4~0.6: 0.4~0.65: 0.7 ~0.8:0.6~2.0, the catalyst p-toluenesulfonic acid is 0.01~0.5% of the total mass of the four components of adipic acid, 1,4-butanediol, pentaerythritol and dimethylol propionic acid, and the polymerization inhibitor is benzene Diphenol is 0.0001% to 0.1% of the total mass of the total reactants;

[0019] (2) Synthesis of polyhydroxy polyester: Add prepared adipic acid, 1,4-butanediol, pentaerythritol, dimethylol propionic acid and catalyst into the reaction vessel, heat under nitrogen protection conditions, and stir while heatin...

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PUM

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Abstract

The invention relates to a method for preparing an ultraviolet curing polyester acrylic ester prepolymer, which comprises the following steps of: firstly, adding the prepared adipic acid, 1,4-butylene glycol, pentaerythritol, dimethylolpropionic acid and a catalyst into a reaction vessel to perform reflux reaction for 1 to 3 hours when the temperature is raised to 125 to 140 DEG C, and then distributing water to obtain a mixture; and secondly, cooling to 100 to 110 DEG C, adding hydroquinone and acroleic acid into the mixture to perform reflux reaction for 1 to 3 hours when the temperature is raised to 130 to 145 DEG C, distributing the water again till no water is distilled off, and cooling the discharge to obtain the ultraviolet curing polyester acrylic ester prepolymer. The method has the advantages of having high yield and simple postprocessing, greatly reducing by-products, effectively reducing the cost, and saving resources. The obtained ultraviolet curing polyester acrylic ester prepolymer has excellent photoreaction activity and extremely good intermiscibility, and can be subjected to copolymerization with other alkene monomers; and when being used in UV curing paint, the coating layer has good adhesion, hardness and luster. The method for preparing the ultraviolet curing polyester acrylic ester prepolymer has the characteristics of excellent film-forming property, low viscosity and economy.

Description

technical field [0001] The invention relates to a preparation method of an ultraviolet-curable polyester acrylate prepolymer, one of the most important raw materials for the preparation of ultraviolet-curable coatings, and belongs to the technical field of chemical materials. Background technique [0002] Ultraviolet light curing (UV curing) means that under the action of ultraviolet light, the photosensitive substance in the system undergoes a chemical reaction to produce active fragments, which triggers the polymerization and crosslinking of active monomers or oligomers in the system, so that the system can be coated from a liquid state. The layer instantly becomes a solid coating. Since the German Bayer company developed the first generation of UV curing coatings in 1967, UV curing technology has developed rapidly around the world and has been rapidly popularized and applied in industries such as electronics, printing, construction, decoration, medicine, machinery, chemic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08G63/60C09D167/07C09D11/10C09D11/101C09D11/104
Inventor 喻兰英李新跃张敬雨李明田罗宏
Owner 自贡拓利化工有限公司