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Modified tetrahydrophthalic acid diglycidyl acylic ester, preparation method and application

A technology of tetrahydrophthalic acid and phthalic acid, applied in the direction of coating, etc., can solve the problems of skin irritation, poor flexibility, high production cost, and achieve excellent water resistance and solvent resistance, stretching The effect of high strength and fast curing speed

Inactive Publication Date: 2009-06-03
HEBEI ENERGY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy acrylate is mainly bisphenol A type epoxy acrylate, which has low price, fast curing speed, high hardness, high film gloss and good chemical corrosion resistance, but it has high viscosity and poor flexibility, so it needs to be added in the coating formula A large amount of reactive diluents are added to reduce the viscosity and improve the construction performance, and these reactive diluents are not only irritating to the skin, but also directly affect the performance of the paint film; poor flexibility will seriously restrict the application range of the paint
Polyurethane acrylate has the advantages of good flexibility, good wear resistance, low temperature resistance and good chemical resistance, but the production cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of tetrahydrophthalate diglycidyl acrylate: add 50g of tetrahydrophthalate diglycidyl acrylate in the reactor equipped with condenser, mechanical stirring, constant pressure dropping funnel and thermometer, Heat the oil bath to 60°C and start dropwise adding 25.7g of acrylic acid dissolved with 0.8g of tetraethylammonium bromide and 0.076g of p-hydroxyanisole, and control the rate of addition to complete the dropwise addition within half an hour, and raise the temperature while adding; After the dropwise addition, control the temperature at about 100°C, and stop the reaction when the acid value of the system drops to 5mgKOH / g;

[0021] (2) Preparation of isocyanate-modified tetrahydrophthalic acid diglycidyl acrylate: the tetrahydrophthalic acid diglycidyl acrylate prepared in the first step is reacted according to the molar ratio of isocyanate group to hydroxyl group of 0.5 Add 75g of the ester into the reactor equipped with a stirrer, a condenser, and ...

Embodiment 2

[0025] (1) Preparation of tetrahydrophthalate diglycidyl acrylate: add 50g of tetrahydrophthalate diglycidyl acrylate in the reactor equipped with condenser, mechanical stirring, constant pressure dropping funnel and thermometer, Heat the oil bath to 60°C and start dropwise adding 25.7 g of acrylic acid dissolved with 0.9 g of tetrabutylammonium bromide and 0.08 g of hydroquinone, and control the rate of addition to complete the dropwise addition within half an hour, and raise the temperature while adding. After the dropwise addition, the temperature is controlled at about 100°C, and the reaction is terminated when the acid value of the system drops to 5 mgKOH / g.

[0026] (2) Preparation of isocyanate-modified tetrahydrophthalic acid diglycidyl acrylate: the tetrahydrophthalic acid diglycidyl acrylate prepared in the first step is reacted according to the ratio of isocyanate group to hydroxyl molar ratio of 0.1 Add 75g of the ester into the reactor equipped with a stirrer, a c...

Embodiment 3

[0030] (1) Preparation of tetrahydrophthalate diglycidyl acrylate: add 50g of tetrahydrophthalate diglycidyl acrylate in the reactor equipped with condenser, mechanical stirring, constant pressure dropping funnel and thermometer, Heat the oil bath to 60°C and start to add 25.7 g of acrylic acid dissolved in 1.0 g of triethanolamine and 0.076 g of p-hydroxyanisole dropwise. The dropping rate is controlled to complete the dropwise addition within half an hour, and the temperature is raised while adding. After the dropwise addition, the temperature is controlled at about 100°C, and the reaction is terminated when the acid value of the system drops to 5 mgKOH / g.

[0031] (2) Preparation of isocyanate-modified tetrahydrophthalic acid diglycidyl acrylate: the tetrahydrophthalic acid diglycidyl acrylate prepared in the first step is reacted according to the molar ratio of isocyanate group and hydroxyl group to 0.4 Add 75g of the ester into the reactor equipped with a stirrer, a conde...

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Abstract

The present invention relates to a modified tetrahydrophthalic acid diglycidyl acylic ester, which uses made by modifying tetrahydrophthalic acid diglycidyl acylic ester with isocyanate group and molar ratio between isocyanate groups and hydroxy is 0. 1-0.8:1. the isocyanate group is chosen from one of toluene diisocyanate, methyl diphenylene diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, or isophorone diisocyanate. Two addition is adopted in the preparation, first tetrahydrophthalic acid diglycidyl ester type epoxide resin reacts with added acrylic acid, then generated tetrahydrophthalic acid diglycidyl acylic ester reacts with added isocyanate group. The technological progress effect of modified tetrahydrophthalic acid diglycidyl acylic ester in the invention on ultraviolet cured paint field lies in quick curing velocity of the coating, high hardness, high adhesion, and high tensile strength of the curing membrane, wherein the curing membrane has good resistance to water and resistance to solvent. The invention can be applied broadly on thermo-responsive basic materials like plastics, paper, woodware and leather etc.

Description

technical field [0001] The invention relates to a modified tetrahydrophthalic acid diglycidyl acrylate, a preparation method and application, and belongs to the technical field of polymer resin chemical synthesis. Background technique [0002] In recent years, the world's environmental protection regulations have become more and more perfect, and the requirements have become increasingly stringent. Traditional solvent-based coatings have been greatly impacted by the emission of volatile organic compounds (VOC), while UV-curable coatings, water-based coatings, high-solid coatings and powders The environment-friendly green paint represented by paint has emerged as the times require. Compared with other types of coatings, UV-curable coatings have many advantages such as fast curing speed (in seconds), environmental protection and energy saving, excellent coating performance, no need for high temperature, and can be used for heat-sensitive substrates such as plastics, paper, woo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/58C09D4/02
Inventor 李彦涛杨淑兰费学梅张晓蕾周海军刘德居
Owner HEBEI ENERGY RES INST
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