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Preparation method of TPO-L photoinitiator

A TPO-L, 1. TPO-L technology, applied in the field of TPO-L photoinitiator preparation, can solve the problems of complex production process, harsh reaction conditions and high equipment requirements, and achieve simple production process, fast curing speed, The effect of low production equipment requirements

Inactive Publication Date: 2013-10-02
NANTONG TAITONG CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production process of the prior art is complicated, the reaction conditions are harsh, the equipment requirements are relatively high, and the three wastes produced are more

Method used

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  • Preparation method of TPO-L photoinitiator
  • Preparation method of TPO-L photoinitiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of TPO-L photoinitiator includes 2,4,6-trimethylbenzoyl chloride preparation stage and TPO-L photoinitiator production stage, and the specific steps are as follows:

[0020] (1), 2,4,6-trimethylbenzoyl chloride preparation stage

[0021] First, put mesitylene 300kg, chlorobenzene 200kg, and aluminum trichloride 100kg into the alkylation reaction kettle by weight, stir and mix evenly, and maintain a certain pressure and flow of carbon dioxide into the reaction kettle. Synthesis of benzoic acid by radicalization, after the reaction is completed, the excess thionyl chloride is pumped in, and after substituted chlorination, atmospheric distillation is performed to recover the excess thionyl chloride and the solvent chlorobenzene, respectively. Color liquid 2,4,6-trimethylbenzoyl chloride;

[0022] (2) Production stage of TPO-L photoinitiator

[0023] Put 50kg of toluene, 60kg of triethylamine and 80kg of anhydrous ethanol into the reaction kettle in...

Embodiment 2

[0027] The preparation method of TPO-L photoinitiator includes 2,4,6-trimethylbenzoyl chloride preparation stage and TPO-L photoinitiator production stage, and the specific steps are as follows:

[0028] (1), 2,4,6-trimethylbenzoyl chloride preparation stage

[0029] First, put mesitylene 400kg, chlorobenzene 250kg, and aluminum trichloride 200kg into the alkylation reaction kettle by weight, stir and mix evenly, and maintain a certain pressure and flow of carbon dioxide into the reaction kettle. Synthesis of benzoic acid by radicalization, after the reaction is completed, the excess thionyl chloride is pumped in, and after substituted chlorination, atmospheric distillation is performed to recover the excess thionyl chloride and the solvent chlorobenzene, respectively. Color liquid 2,4,6-trimethylbenzoyl chloride;

[0030] (2) Production stage of TPO-L photoinitiator

[0031] Put 75kg of toluene, 90kg of triethylamine and 90kg of anhydrous ethanol into the reaction kettle in...

Embodiment 3

[0034] The preparation method of TPO-L photoinitiator includes 2,4,6-trimethylbenzoyl chloride preparation stage and TPO-L photoinitiator production stage, and the specific steps are as follows:

[0035] (1), 2,4,6-trimethylbenzoyl chloride preparation stage

[0036] First, put mesitylene 500kg, chlorobenzene 300kg, and aluminum trichloride 300kg into the alkylation reaction kettle by weight, stir and mix evenly, and maintain a certain pressure and flow of carbon dioxide into the reaction kettle. Synthesis of benzoic acid by radicalization, after the reaction is completed, the excess thionyl chloride is pumped in, and after substituted chlorination, atmospheric distillation is performed to recover the excess thionyl chloride and the solvent chlorobenzene, respectively. Color liquid 2,4,6-trimethylbenzoyl chloride;

[0037] (2) Production stage of TPO-L photoinitiator

[0038] Put 100kg of toluene, 120kg of triethylamine and 100kg of anhydrous ethanol into the reaction kettle i...

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Abstract

The invention relates to the technical field of TPO-L photoinitiators and particularly relates to a preparation method of a TPO-L photoinitiator, which comprises a stage of 2,4,6-trimethylbenzoyl chloride preparation and a stage of TPO-L photoinitiator production. According to the preparation method, 2,4,6-trimethylbenzoyl chloride which is used as the main raw material reacts with diethyl phenyl phosphonite, and then water circulation treatment is carried out to obtain the product; and the yield of the product is over 98%, the curing speed is high and the stability is good. Moreover, the method provided by the invention has a simple production technology, is easy to operate, has low requirements on the production equipment, reduces the production cost and hardly causes pollution.

Description

technical field [0001] The invention relates to the technical field of TPO-L photoinitiators, in particular to a preparation method of TPO-L photoinitiators. Background technique [0002] TPO-L is a liquid photoinitiator with fast curing speed. It is mainly suitable for formulation systems with low yellowing and low odor. Because TPO-L has a wider absorption range, it can also be used to cure the white paint contained. In order to improve the curing effect of the surface, TPO-L is often used together with other photoinitiators, such as 184, 1173 and benzophenone. The recommended concentration of TPO-L is 0.3-5%, and the recommended uses are as follows: screen printing ink, lithographic printing ink, flexo printing ink, photoresist, varnish, printing plate. However, the production process of the prior art is complicated, the reaction conditions are harsh, the equipment requirements are relatively high, and many three wastes are generated. SUMMARY OF THE INVENTION [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/32
Inventor 储晓建
Owner NANTONG TAITONG CHEM TECH
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