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Preparation method and application of resin having double curing groups

A dual-curing, group technology, applied in the field of synthesis of urethane acrylate-modified epoxy acrylic monoester, can solve the problems of uneven local curing, poor resin compatibility, etc., to improve the shrinkage rate and enhance the bonding performance , the effect of reducing the double bond density

Inactive Publication Date: 2010-09-08
SHENZHEN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In various hybrid UV curing systems, most researchers use the mixture of several resins with different curing groups, so there are problems such as uneven local curing or poor compatibility between resins.

Method used

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  • Preparation method and application of resin having double curing groups
  • Preparation method and application of resin having double curing groups
  • Preparation method and application of resin having double curing groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the first step, add 260g of bisphenol A epoxy (epoxy E51) into a 500mL three-necked flask, take an oil bath to 100°C, stir, and add additionally metered acrylic acid (the molar ratio of epoxy group to acrylic acid is 2:1) Add a total mass of 0.2% catalyst N,N-dimethylbenzylamine (BDMA) and 0.3% polymerization inhibitor p-hydroxyanisole, dropwise into the epoxy resin, and react for 4.5h after the acid value of the system is less than 3mgKOH / g , that is, the epoxy acrylate monoester ①; the second step, in a 500mL three-necked flask, add 2mol of toluene diisocyanate (TDI), heated to 60 ° C, dibutyltin dilaurate is added by 0.2% of the total mass Add 1 mol of polyethylene glycol (molecular weight 400) dropwise into the toluene diisocyanate (TDI) solution, continue the reaction for 2 hours after the drop, add 0.2% p-hydroxyanisole to 1 mol of hydroxyethyl acrylate, add the above reaction system, heated up to 100°C and reacted for 2.5 hours to obtain polyurethane acrylate ...

Embodiment 2

[0031]In the first step, add 550g of bisphenol A epoxy (epoxy E44) into a 1000mL three-necked flask, take an oil bath to 110°C, stir, and add additionally metered acrylic acid (the molar ratio of epoxy group to acrylic acid is 2:1) Add a total mass of 0.4% catalyst triethylbenzyl ammonium chloride and 0.3% polymerization inhibitor hydroquinone, drop into the epoxy resin, and react for 4 hours. The acid value of the system is less than 3mgKOH / g, that is, the epoxy acrylic acid Monoester ①; in the second step, add 2mol of diphenylmethane diisocyanate (MDI) in a 500mL three-necked flask, heat to 60°C, and dibutyltin dilaurate is added to 1mol of poly Add ethylene glycol (molecular weight 600) dropwise into the toluene diisocyanate (TDI) solution, continue the reaction for 2 hours after the drop is complete, add 0.3% p-hydroxyanisole to 1mol of hydroxyethyl methacrylate, and add the above reaction system , heated to 100°C and reacted for 2.5 hours to obtain polyurethane acrylate ②...

Embodiment 3

[0033] In the first step, add 600g of tetrabromobisphenol A epoxy resin into a 1000mL three-necked flask, heat the oil bath to 90°C, stir, and then add The total mass of 0.5% catalyst tris(acetylacetonate) lanthanum (III) and 0.5% polymerization inhibitor p-hydroxyanisole are added dropwise in the epoxy resin, and the acid value of the system is less than 3mgKOH / g after reacting for 5 hours, that is, the epoxy Acrylic monoester ①; in the second step, add 3mol of hexamethylene diisocyanate (HDI) in a 1000mL three-necked flask, heat to 80°C, and add 0.2% of dibutyltin dilaurate to 1mol of Add 1,6-hexanediol dropwise into the toluene diisocyanate (TDI) solution, continue the reaction for 2 hours after the drop is complete, add 0.5% p-hydroxyanisole to 1mol of hydroxypropyl acrylate, add the above reaction system, and heat up React at 80°C for 3 hours to obtain urethane acrylate ② with -NCO group at one end; in the third step, add a certain amount of epoxy acrylate monoester ① int...

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Abstract

The invention discloses a preparation method and application of resin having double curing groups. The resin having double curing groups comprises epoxy monoacrylate and polyurethane acrylate chain segments and has the following structure. The molecule of the resin having double curing groups has an acrylate double bond (a curing free radical) and an epoxy group (a curing or thermally curing anion), so the brittleness of a cured film is reduced and the flexibility of the cured film is improved and the resin can be used in ultraviolet curing paint, adhesive and ink. The resin can improve large shrinkage factor of a single acrylate free radical curing system and large brittleness and poor flexibility of the UV curing film and the like and can also solve the problem that a several-resin mixed compounding system has unstable performance, uneven local curing, poor compatibility among resin and the like.

Description

technical field [0001] The invention belongs to the technical field of macromolecule synthesis, and in particular relates to a molecule which has both ultraviolet light-induced radical curing groups (acrylate double bonds) and ultraviolet light-induced cationic curing or thermal curing groups (epoxy groups) The resin, and the preparation method of the resin, specifically the synthesis method of epoxy acrylate monoester modified with urethane acrylate; the resin can be applied to the fields of hybrid UV-cured coatings, adhesives, inks and the like. Background technique [0002] Ultraviolet (UV) curing technology is a green and environmentally friendly technology that does not use solvents. It has fast curing speed (0.1-10s), less environmental pollution, low energy consumption, automatic production, and is suitable for use on heat-sensitive substrates. Etc. According to its use, it mainly includes UV-curable coatings, adhesives, inks, etc. According to the photo-curing mecha...

Claims

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Application Information

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IPC IPC(8): C08G81/00C08G18/67C08G59/17C09D163/10C09D175/16C09J163/10C09J175/16C09D11/10C09D11/101C09D11/102
Inventor 刘红波林峰
Owner SHENZHEN POLYTECHNIC
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