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Photoinitiator 4,4'-bis(2,2-dialkoxyacetyl)biphenyl and synthetic method thereof

A dialkoxyacetyl and diethoxyacetyl technology is applied in the application field of photoinitiator 4,4'-dibiphenyl in photopolymerization materials, which can solve problems such as VOC emission and environmental pollution, and achieve optimization Effects of reaction conditions, economical production processes

Inactive Publication Date: 2018-05-18
HUAIHUA JINXIN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, children's toy inks, food and pharmaceutical packaging inks usually use solvent-based inks, which cause a large amount of VOC emissions during the construction process and seriously pollute the environment. This requires the development of environmentally friendly light-curing materials to introduce UV light-curing technology into these fields.

Method used

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  • Photoinitiator 4,4'-bis(2,2-dialkoxyacetyl)biphenyl and synthetic method thereof
  • Photoinitiator 4,4'-bis(2,2-dialkoxyacetyl)biphenyl and synthetic method thereof
  • Photoinitiator 4,4'-bis(2,2-dialkoxyacetyl)biphenyl and synthetic method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0019] In a 2000-liter reactor, add 600g of ethanol and 238g of 4,4'-diacetylbiphenyl, feed 38g of dry hydrogen chloride gas under ice-water cooling, and feed 268g of methyl nitrite at 30-35°C. Continue to react at this temperature for 4 hours after completion, stop the reaction, distill ethanol off under reduced pressure to obtain a crude product. Distilled under reduced pressure to obtain 297 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl with a yield of 83.0%.

Embodiment 2

[0021] In a 2000-liter reactor, add 600g of ethanol and 238g of 4,4'-diacetylbiphenyl, feed 42g of dry hydrogen chloride gas under ice-water cooling, and feed 268g of ethyl nitrite at 30-35°C. Continue to react at this temperature for 4 hours after completion, stop the reaction, distill ethanol off under reduced pressure to obtain a crude product. Distilled under reduced pressure to obtain 298 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl with a yield of 83.2%.

Embodiment 3

[0023] In a 2000-liter reactor, add 600g of ethanol and 238g of bis(4-diacetylphenyl)methane, feed 38g of dry hydrogen chloride gas under ice-water cooling, and feed 330g of ethyl nitrite at 30-35°C , continue to react at this temperature for 4 hours after passing through, stop the reaction, and distill ethanol off under reduced pressure to obtain a crude product. Distilled under reduced pressure to obtain 357 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl with a yield of 86.2%.

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Abstract

The invention relates to a 4,4'-bis(2,2-dialkoxyacetyl)biphenyl photocatalyst which may act as a photoinitiator for photopolymerization of an alkene unsaturated compound or a mixture with the same. Compared with traditional photoinitiators, the photocatalyst has double functional groups and enables alkene unsaturated compounds to quickly photopolymerize in light. 4,4'-Diacetylbiphenyl is used as araw material to react with ethyl nitrite (or methyl nitrite) under the action of hydrogen chloride to generate 4,4'-bis(2,2-dialkoxyacetyl)biphenyl. The influence of hydrogen chloride upon the reaction is investigated, and a novel process to synthesize 4,4'-bis(2,2-dialkoxyacetyl)biphenyl with simple operations and good economy and practicality is provided.

Description

technical field [0001] The invention belongs to the category of photoinitiators and the application of photoinitiator 4,4'-bis(2,2-dialkoxyacetyl)biphenyl in photopolymerization materials. 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 replace tra...

Claims

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Application Information

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IPC IPC(8): C08F2/48C07C45/64C07C49/84
CPCC07C49/84C08F2/48
Inventor 王有名
Owner HUAIHUA JINXIN NEW MATERIAL CO LTD
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