A kind of coumarin oxime ester photoinitiator and preparation method thereof

A technology of photoinitiator and coumarin oxime, which is applied in the field of photoinitiator containing coumarin structural unit and oxime ester group and its preparation, can solve the problem of hindering the development of oxime ester initiators, inability to match LED light sources, Curing material surface damage and other problems, to achieve the effect of easy implementation, mature preparation method and fast curing speed
CN104817653BActive Publication Date: 2016-08-24JIANGNAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGNAN UNIV
Publication Date
2016-08-24

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Abstract

The invention discloses a coumarin oxime ester photoinitiator and a preparation method thereof. The coumarin oxime ester photoinitiator is obtained by performing an oximation reaction on a coumarin compound containing a formyl group and NH2OH.HCl to obtain an oxime compound, and finally performing an esterification reaction on the oxime compound and acyl chloride. The photoinitiator is capable of initiating a polymerization reaction under visible light enough in intensity, and has the characteristics of high initiation activity and high curing speed.
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Description

technical field

[0001] The invention relates to the field of photoinitiators, in particular to a photoinitiator containing a coumarin structural unit and an oxime ester group and a preparation method thereof. Background technique

[0002] Environmental and energy issues in today's society are becoming more and more prominent. Photocurable materials are widely accepted and paid attention to as a green, environmentally friendly, and low-energy-consumption environment-friendly material because there is no or only a small amount of solvent volatilization during the curing process.

[0003] Photoinitiator is an essential part of photocuring technology, it plays a key role in the photocuring process, determines the speed of photocuring, and even affects the performance of photocuring materials. As an important part of photocuring, the photoinitiator undergoes a photolysis reaction under the excitation of the light source to generate reactive free radicals or ions, and then initiat...

Claims

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