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Preparation method for alicyclic epoxy and double bond contained dual-curing resin and application thereof

A dual-curing, dual-curing technology, used in applications, household appliances, adhesive types, etc., can solve the problems of unstable cured film performance, inconsistent polymerization rate, poor comprehensive performance, etc., and achieve good UV cationic curing activity, The effect of improving performance

Inactive Publication Date: 2012-09-19
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are two types of ultraviolet free radical-cation dual curing systems according to the composition of the resin: (1) Acrylate-vinyl ether system, which has been studied a lot in the early stage. The performance is poor and the application value is not high, so this kind of system has been seldom studied at present
(2) Acrylate-epoxy resin system. This type of research is mainly based on the compounding of different acrylic resins and epoxy resins, and adding free radicals and cationic photoinitiators to obtain a dual curing system, but there are differences between different resins. Problems such as poor compatibility, mismatched polymerization rate, unstable performance of cured film, etc.

Method used

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  • Preparation method for alicyclic epoxy and double bond contained dual-curing resin and application thereof
  • Preparation method for alicyclic epoxy and double bond contained dual-curing resin and application thereof
  • Preparation method for alicyclic epoxy and double bond contained dual-curing resin and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In the first step, add 1mol of toluene diisocyanate (TDI) into a 500mL flask, stir, heat to 50°C, and add 0.3% of dibutyl dilaurate to 0.5mol of 1,4-butanediol. Tin acid, dropwise added toluene diisocyanate (TDI), reacted for 3 hours, then added 0.5 mol of hydroxyethyl acrylate (dissolved with 0.5% of the total mass of p-hydroxyanisole), and raised the temperature to 65 ° C to continue the reaction for 3 hours; In the second step, add 0.5mol of glycerol to a 500mL flask, and add 0.2% of the total mass of dibutyltin dilaurate, heat to 60 ° C, and synthesize the polyurethane containing 0.5mol of NCO groups in the first step The acrylate segment is slowly added dropwise into glycerol, and reacted for 2.5 hours to obtain the prepolymer ①; the third step: add 1mol toluene diisocyanate (TDI) to a 1000mL flask, and add 0.2% of the total mass of dibutyl Tin dilaurate, heated to 70°C, slowly add the prepolymer ① containing 1molOH synthesized in the second step into the diisocyan...

Embodiment 2

[0027]In the first step, add 2mol of diphenylmethane diisocyanate (MDI) in a 1000mL flask, stir, heat to 60°C, add 0.4% of the total mass of dibutyl dilauric acid to 1mol of polyether diol Tin, add methane diisocyanate (MDI) dropwise, after reacting for 4 hours, then add 1 mol of hydroxyethyl methacrylate (dissolved with 0.6% p-hydroxyanisole in total mass), heat up to 70°C and continue the reaction for 2.5 hours; In the second step, add 1mol of trimethylolpropane to a 500mL flask, and add 0.3% of the total mass of dibutyltin dilaurate, heat to 50 ° C, and synthesize the first step containing 2mol of NCO groups The urethane acrylate segment is slowly added dropwise into trimethylolpropane, and reacted for 4 hours to obtain a prepolymer ①; the third step: add 1mol diphenylmethane diisocyanate (MDI) to a 500mL flask, and add 0.1 % dibutyltin dilaurate, heated to 65°C, slowly added the prepolymer ① containing 1molOH synthesized in the second step into the diisocyanate, and reacte...

Embodiment 3

[0029] In the first step, add 1mol of hexamethylene diisocyanate (HDI) into a 500mL flask, stir, heat to 55°C, add 0.5% of the total mass of dibutyl to 0.5mol of 1,6-hexanediol Tin dilaurate, add hexamethylene diisocyanate (HDI) dropwise, react for 3 hours, then add 0.5mol of hydroxypropyl acrylate (dissolved with 0.8% of the total mass of p-hydroxyanisole), and heat up to 65°C Continue to react for 3h; in the second step, add 0.5mol of trimethylolpropane to a 500mL flask, and add 0.1% of the total mass of dibutyltin dilaurate, heat to 65 ° C, and synthesize in the first step The urethane acrylate segment containing 0.5mol NCO group is slowly added dropwise into trimethylolpropane, and reacted for 4 hours to obtain the prepolymer ①; the third step: add 1mol hexamethylene diisocyanate (HDI) to a 1000mL flask, And add 0.3% of the total mass of dibutyl tin dilaurate, heat to 60 ° C, slowly add the prepolymer ① containing 1molOH synthesized in the second step to the diisocyanate, ...

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Abstract

The invention discloses a preparation method for alicyclic epoxy and double bond contained dual-curing resin and an application thereof. The alicyclic epoxy and double bond contained dual-curing resin comprises acrylate double bonds (ultraviolet free radical curing) and alicyclic epoxy group (ultraviolet cation curing or thermocuring). The resin containing dual curing groups can realize ultraviolet free radical and cation dual curing or ultraviolet and thermal dual curing, curing is quick, cured membranes are high in flexibility, curing volume shrinkage is low, and the resin is high in adhesive force and can be used for dual curing of paint, adhesives and ink.

Description

technical field [0001] The invention belongs to the technical field of organic polymer synthesis, and in particular relates to a molecule containing both ultraviolet light-induced free radical curing groups (acrylate double bonds) and ultraviolet light-induced cationic curing or thermal curing groups (alicyclic epoxy resins). group) resin, and the preparation method of the resin, the resin can be applied to the fields of double ultraviolet curing coatings, adhesives, inks and the like. Background technique [0002] Ultraviolet (UV) curing technology has the advantages of fast curing speed, excellent cured film performance, no solvent release during use, less environmental pollution, low energy consumption during curing, automatic production, and is suitable for use on heat-sensitive substrates. , and has been extensively researched and applied. [0003] According to the mechanism of UV curing, there are mainly two kinds of free radical curing and cationic curing. The chara...

Claims

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Application Information

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IPC IPC(8): C08G18/83C08G18/67C08G18/12C09D175/16C09J175/16C09D11/00
Inventor 刘红波林峰肖望东张武英
Owner SHENZHEN POLYTECHNIC
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