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Novel light initiator

A compound and an independent technology, applied in the field of photoinitiators with oxime ester structure, can solve the problems of difficult curing of colored resists, achieve good photoinitiation effect and stability, broaden the application range, and increase the effect of compatibility

Active Publication Date: 2010-06-02
江苏裕事达新材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Curing of colored resists becomes more difficult with higher pigment content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] According to the photoinitiator of the present embodiment, structural formula is as follows:

[0021]

[0022] Above-mentioned compound synthetic steps are as follows:

[0023] (1), Synthesis of N-ethylcarbazole-6-o-methylbenzoyl-3-ethanone oxime:

[0024]

[0025] ①. In a 500ml four-necked bottle, add 58.5g (0.3mol) N-ethylcarbazole, 40g (0.3mol) AlCl 3 And 200ml of dichloromethane, add 46.35g (0.3mol) of o-toluyl chloride dropwise at 0~-5°C, the color deepens during the dropwise addition, and turns green. After the dropwise addition, react for 2 hours, take a sample for analysis, the product When the content is greater than 98%, 40g of aluminum trichloride is added, and 28.6g (0.36mol) of acetyl chloride is added dropwise at 10°C to 15°C. After the addition, the reaction is completed in about 2 hours, and the purity is 95.00% by HPLC. Pour the reaction product into 300ml of water for hydrolysis, wash it twice with 300ml of water, then wash it with aqueous sodi...

Embodiment 2

[0031] According to the photoinitiator of the present embodiment, structural formula is as follows:

[0032]

[0033] The synthetic steps of the above-mentioned compound are as follows: it is prepared through the steps carried out in sequence as follows:

[0034] (1), prepare N-ethylcarbazole-6-o-methylbenzoyl-3-ethanone oxime in the same manner as in Example 1;

[0035] (2), the photoinitiator of the present embodiment is synthesized by step (1) gained N-ethylcarbazole-6-o-tolyl-3-ethanone oxime:

[0036]

[0037] Add 100 grams of N-ethylcarbazole-6-o-methylbenzoyl-3-ethanone oxime, 500 ml of toluene, 32.3 grams of triethylamine, a small amount of 2# catalyst into a 500 ml reaction flask, and cool to 0-5 ℃, dropwise add the toluene solution of p-methoxyphthaloylbenzoyl chloride to the feed liquid, keep dropping at 5~10℃, the dropping time is 3 hours, after the dropping is completed, keep 5- Stir at 10 degrees for 3 to 5 hours, then take a sample and pass the test. re...

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Abstract

The invention relates to a novel light initiator. On the basis of traditional oxime ester compound, another group of diphenyl ketone is initiated. The newly added diphenyl ketone broadens the application range of the light initiator and increases the solubility between the light initiator and a prepolymer. Thus, the invention provides better light initiating effect and stability for compounds.

Description

technical field [0001] The invention belongs to the field of photoinitiators, in particular to a photoinitiator with an oxime ester structure. Background technique [0002] Photoinitiator is one of the indispensable components of ultraviolet curable materials (photocurable materials mainly composed of unsaturated resin and its monomer materials, so that it can undergo polymerization and curing reaction under ultraviolet light, X-ray or laser irradiation) , it is necessary to add a photoinitiator or a sensitizer), which plays a decisive role in the sensitivity of the photocuring system. Since light-curing materials have no solvent volatilization during curing, the pollution to the environment is greatly reduced. As an environmentally friendly green technology, light-curing technology has been vigorously developed in recent years. As an important part of photocurable materials, the function of photoinitiator is to generate active free radicals or cations after absorbing light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/86C08F2/50
Inventor 曾裕峰胡汉民李春江魏海涛
Owner 江苏裕事达新材料科技有限责任公司
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