Unsaturated-terminal-group-containing branched-structure polyester ether and preparation method thereof

A branched structure, unsaturated technology, applied in the field of branched structure polyetherester and its preparation, can solve the problems of poor heat resistance and flame retardancy, low crosslinking density, insufficient hardness and flexibility, etc. The effect of improving the cross-linking performance

Active Publication Date: 2016-06-22
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although the application of light-curing coatings in various industries has been developed rapidly, especially in plastics and other substrates, there are still various advantages, but the existing light-curing coatings still have the following problems: hardness and flexibility are not good enough; heat resistance Poor flame retardancy; poor weather resistance and yellowing; poor adhesion to the substrate, etc.
[0005] This monomer has good thermal stability and weather resistance as a resin matrix, but since there are only 3 C=C double bonds in the structure, it has the disadvantage of low crosslinking density when used as a high-performance crosslinking agent. Coating film hardness is not high

Method used

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  • Unsaturated-terminal-group-containing branched-structure polyester ether and preparation method thereof
  • Unsaturated-terminal-group-containing branched-structure polyester ether and preparation method thereof
  • Unsaturated-terminal-group-containing branched-structure polyester ether and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Add 20mL of toluene to a 100mL three-neck flask, add 5.0g of tris(2-hydroxyethyl)isocyanurate, 8.1g of glycidyl methacrylate, stir, and add 0.5% of the total amount of raw materials Triethylamine , the temperature was raised to 105° C., and the temperature was reacted for 5 hours. The epoxy group content in the reaction product was measured by the acetone hydrochloride method to calculate the conversion rate of the raw material glycidyl methacrylate, and the mass conversion rate of glycidyl methacrylate was 99.2%.

Embodiment 2

[0028] Add 20mL of toluene to a 100mL three-neck flask, add 5.0g of tris(2-hydroxyethyl)isocyanurate, 8.1g of glycidyl methacrylate, stir, and add 0.5% of the total amount of raw materials Triethylamine , the temperature was raised to 85°C, and the reaction was carried out at constant temperature for 10 hours. The conversion rate of the raw material glycidyl methacrylate was calculated by measuring the epoxy group content in the reaction product by the acetone hydrochloride method, and the mass conversion rate of glycidyl methacrylate was 94.3%.

Embodiment 3

[0030] Add 20mL of toluene to a 100mL three-neck flask, add 5.0g of tris(2-hydroxyethyl)isocyanurate, 16.2g of glycidyl methacrylate, stir, and add 0.5% of the total amount of raw materials triethylamine , the temperature was raised to 110°C, and the reaction was carried out at constant temperature for 5h. The conversion rate of the raw material glycidyl methacrylate was calculated by measuring the epoxy group content in the reaction product by the acetone hydrochloride method, and the mass conversion rate of glycidyl methacrylate was 92.5%.

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Abstract

The invention discloses an unsaturated-terminal-group-containing branched-structure polyester ether and a preparation method thereof. The simple structural formula of the polyester ether is disclosed as (I); and the polyester ether can be used as a crosslinking agent, and can also be used for preparing other functional materials by modifying the terminal group. Tri(2-hydroxyethyl)isocyanurate and glycidyl methacrylate are used raw materials to synthesize the unsaturated-terminal-group-containing branched-structure polyester ether under the action of a catalyst tertiary amine or bimetal cyanide complex by one step. The polyester ether has very high curing rate and crosslinking density when being used as a crosslinking agent, has the advantages of accessible raw materials and simple synthesis method, and can be applied to the field of ultraviolet curing paints.

Description

technical field [0001] The invention relates to a branched structure polyether ester containing unsaturated end groups and a preparation method thereof, belonging to the technical fields of chemical synthesis and coating application. Background technique [0002] Ultraviolet curing coatings (UV coatings) have the characteristics of high energy utilization rate, fast curing speed, no solvent, and no emission of volatile organic compounds to the atmosphere. They are known as energy-saving, resource-saving, low-pollution and high-efficiency environmental cleaning products. It is gradually replacing traditional polluting solvent-based paints. At present, although the application of light-curing coatings in various industries has been developed rapidly, especially in plastics and other substrates, there are still various advantages, but the existing light-curing coatings still have the following problems: hardness and flexibility are not good enough; heat resistance Poor flame r...

Claims

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Application Information

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IPC IPC(8): C07D251/34C09D7/12
CPCC07D251/34C09D7/63
Inventor王为强杨建明张前梅苏宁袁俊惠丰余秦伟赵锋伟李亚妮吕剑
OwnerXIAN MODERN CHEM RES INST