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Synthesis method and application of 4'-dimethylamino-2,2-diethoxyacetophenone

A technology of diethoxyacetophenone and dimethylaminoacetophenone, which is applied in the field of 4'-dimethylamino-2, can solve the problems of reproductive toxicity and carcinogenicity, and achieve good application prospects

Inactive Publication Date: 2020-02-11
HUAIHUA JINXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Commonly used photoinitiators often have problems such as carcinogenicity or reproductive toxicity when used

Method used

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  • Synthesis method and application of 4'-dimethylamino-2,2-diethoxyacetophenone
  • Synthesis method and application of 4'-dimethylamino-2,2-diethoxyacetophenone
  • Synthesis method and application of 4'-dimethylamino-2,2-diethoxyacetophenone

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[0014] The present invention provides a kind of synthetic method of 4'-dimethylamino-2,2-diethoxyacetophenone, adopts 4-dimethylaminoacetophenone as starting material, under the catalysis of acid or alkali Ethyl nitrate reaction, obtains 4'-dimethylamino-2,2-diethoxyacetophenone, and the synthetic chemical formula of described 4'-dimethylamino-2,2-diethoxyacetophenone is as follows:

[0015]

[0016] The general formula of the 4'-dimethylamino-2,2-diethoxyacetophenone intermediate is as follows:

[0017]

[0018] Wherein, the base is selected from sodium methoxide, sodium ethoxide, sodium tert-butoxide and potassium tert-butoxide. The reaction temperature in the synthesis of the photoinitiator 4'-dimethylamino-2,2-diethoxyacetophenone is 30-50°C.

[0019] The present invention also provides an application of 4'-dimethylamino-2,2-diethoxyacetophenone, which applies 4'-dimethylamino-2,2-diethoxyacetophenone to ink middle.

Embodiment 1

[0022] In a 1000 ml reaction flask, add 300 g of toluene and 80 g of p-dimethylaminoacetophenone, and simultaneously feed hydrogen chloride gas and ethyl nitrite gas at 30-60° C. The aeration volume is 85g. During the aeration process, keep the reaction temperature at 30-60°C. After the reaction is completed, add 200g of water to wash once, separate the liquid, remove the water layer, and remove toluene to obtain a crude product, which is then distilled under reduced pressure to obtain 98g of the product. The yield was 79.5%.

Embodiment 2

[0024] In a 1000 ml reaction flask, add 350 g of toluene and 80 g of p-dimethylaminoacetophenone, and simultaneously feed hydrogen chloride gas and ethyl nitrite gas at 30-60° C. The aeration volume is 90g. During the aeration process, keep the reaction temperature at 30-60°C. After the reaction is completed, add 200g of water to wash once, separate the liquid, remove the water layer, and remove toluene to obtain a crude product. Distill under reduced pressure to obtain 96g of the product. Yield 77.9%.

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Abstract

The invention provides a synthesis method of 4'-dimethylamino-2,2-diethoxyacetophenone. The synthesis method is characterized in that 4-dimethylaminoacetophenone is used as a starting raw material andreacts with ethyl nitrite under the catalysis of an acid or alkali to obtain 4'-dimethylamino-2,2-diethoxyacetophenone. The invention also provides the application of 4'-dimethylamino-2,2-diethoxyacetophenone. The invention has the advantages that 4'-dimethylamino-2,2-diethoxyacetophenone has no carcinogenicity or reproductive toxicity, can be applied to ink and has good application prospects.

Description

【Technical field】 [0001] The invention relates to the technical field of photoinitiators, in particular to a synthetic method of 4'-dimethylamino-2,2-diethoxyacetophenone and its application. 【Background technique】 [0002] UV light curing technology is a new technology that came out in the middle of the 20th century. It uses ultraviolet light (wavelength 200-400nm) as the energy source to trigger the process of rapid transformation of chemically reactive liquid substances into solids. Compared with the traditional thermal curing technology, it has the advantages of fast curing speed, high efficiency, less pollution, excellent performance and low cost, and is a rapidly developing "green" new technology. UV light curing products are composed of three parts, namely light curing resin, diluent and photoinitiator. [0003] In recent years, with the country's strict control of VOC emissions, UV light curing technology has become more and more important, and will gradually replac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C221/00C07C225/22C09D11/00
CPCC07C221/00C09D11/00
Inventor 王有名
Owner HUAIHUA JINXIN NEW MATERIAL CO LTD