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Vegetable oil acid modified epoxy acrylate light-cured resin and preparation method thereof

A technology of epoxy acrylate and light-curing resin, applied in epoxy resin coatings, coatings, etc., can solve the problems of limited application scope, decreased strength of epoxy resin cured film, low cross-linking density, etc., to achieve performance Excellent, reduced viscosity, improved brittleness problem

Inactive Publication Date: 2020-10-16
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the epoxy resin system cured by traditional epoxy curing agents, the strength of the cured film of epoxy oil resin is significantly reduced, and the crosslinking density is small, which limits its application range.

Method used

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  • Vegetable oil acid modified epoxy acrylate light-cured resin and preparation method thereof
  • Vegetable oil acid modified epoxy acrylate light-cured resin and preparation method thereof
  • Vegetable oil acid modified epoxy acrylate light-cured resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 100g of epoxy resin E51 in a three-necked flask, add 72g of oleic acid, add 1.0g of tetrabutylammonium bromide, and pass N 2 , stirred and heated to 100°C. After reacting for 2 hours, test the acid value, and when the acid value is less than 10mgKOH / g, lower the temperature to 90°C. After the temperature stabilized, 18.4 g of acrylic acid in which 500 ppm of p-hydroxyanisole was dissolved was added dropwise. React until the acid value of the system is less than 10mgKOH / g. Maintain the temperature at 90°C, add 15.0 g of refined maleic anhydride to the reaction system, and react for 1 hour to test the acid value. When the acid value difference was measured twice and was less than 5mgKOH / g, 0.02g of p-hydroxyanisole, 1.0g of tetrabutylammonium bromide were added to the system, and then 21.7g of glycidyl methacrylate (GMA) was added dropwise, React at a constant temperature of 100°C until the acid value is less than 10mgKOH / g, then stop heating. When the temperatu...

Embodiment 2

[0030] Weigh 100 g of epoxy resin E51 into a three-necked flask, add 72 g of linoleic acid, and add 1.0 g of tetrabutylammonium bromide. Pass N 2 , stirred and heated to 100°C. After reacting for 2 hours, test the acid value, and when the acid value is less than 10mgKOH / g, lower the temperature to 90°C. After the temperature stabilized, 18.4 g of acrylic acid in which 500 ppm of p-hydroxyanisole was dissolved was added dropwise. React until the acid value of the system is less than 10mgKOH / g. Maintain the temperature at 90°C, add 15.0 g of refined maleic anhydride to the reaction system, and react for 1 hour to test the acid value. When the difference in acid value is less than 5mgKOH / g, add 0.02g p-hydroxyanisole and 1.0g tetramethylammonium chloride to the system, then add 21.7g glycidyl methacrylate (GMA) dropwise, React at a constant temperature of 110°C until the acid value is less than 10mgKOH / g, then stop heating. When the temperature cooled to 80°C, the resin was ...

Embodiment 3

[0032] Weigh 100 g of epoxy resin E51 into a three-necked flask, add 72 g of linolenic acid, and add 1.0 g of tetrabutylammonium bromide. Pass N 2 , stirred and heated to 100°C. After reacting for 2 hours, test the acid value, and when the acid value is less than 10mgKOH / g, lower the temperature to 90°C. After the temperature stabilized, 18.4 g of acrylic acid in which 500 ppm of p-hydroxyanisole was dissolved was added dropwise. React until the acid value of the system is less than 10mgKOH / g. Maintain the temperature at 90°C, add 15.0 g of refined maleic anhydride to the reaction system, and react for 1 hour to test the acid value. When the acid value difference was measured twice and was less than 5mgKOH / g, 0.02g of p-hydroxyanisole, 1.0g of tetrabutylammonium bromide were added to the system, and then 21.7g of glycidyl methacrylate (GMA) was added dropwise, React at a constant temperature of 115°C until the acid value is less than 10mgKOH / g, then stop heating. When the...

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Abstract

The invention discloses a vegetable oil acid modified epoxy acrylate light-cured resin and a preparation method thereof. Vegetable oil fatty acids containing unsaturated double bonds are used for a ring-opening reaction of glycidyl ether type epoxy resin to prepare epoxy oleoresin, and meanwhile hydroxyl is formed in the molecular structure. Generated hydroxyl reacts with maleic anhydride to prepare carboxyl-containing half ester, and carboxyl-containing half ester reacts with glycidyl methacrylate to prepare the vegetable oil acid modified epoxy acrylate resin with light-cured activity. The resin contains a long-chain grease structure, and has good wettability to a coated base material and added pigments and fillers. After the common bisphenol A epoxy resin and carboxyl are subjected to ring opening, the hydroxyl number in the molecular structure is generally greater than 2, so that the functionality of the prepared vegetable oil acid modified epoxy acrylate resin can be greater than2. Unsaturated fatty acid with a molecular structure can be catalytically oxidized, cured and cross-linked, so that a dual-curing cross-linked network can be formed, and the performance of the coatingis further improved.

Description

technical field [0001] The invention belongs to the field of resin preparation for photocurable coatings, and in particular relates to a vegetable oleic acid modified epoxy acrylate photocurable resin and a preparation method thereof. [0002] technical background [0003] Photocurable coatings are coatings that use ultraviolet light to decompose photoinitiators to generate active species, initiate monomer polymerization, and then cure the coating. The molecular weight of the resin used is generally low, and the small molecular monomer is used as the active diluent. The content of organic volatiles in the coating system is low, which is friendly to the environment. As environmental protection is paid more and more attention, the research on environment-friendly coatings is increasing day by day. The types of resins used in light-curing coatings are increasing day by day, and the resins used in large quantities include epoxy acrylate resins, polyester acrylate resins, and pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/17C08G59/16C08G59/14C09D163/10
CPCC08G59/1472C08G59/1466C08G59/1438C08G59/1455C09D163/10
Inventor 聂俊王娅娴方大为马贵平
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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