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
8 Cites 0 Cited by

AI-Extracted 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...
View more

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.

Application Domain

Organic compound preparationCarbonyl compound preparation

Technology Topic

PhotoinitiatorHydrogen chloride +4

Image

  • 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(4)

Example Embodiment

[0018] Example 1
[0019] In a 2000-liter reactor, add 600g of ethanol and 238g of 4,4'-diacetyl biphenyl, pass 38g of dry hydrogen chloride gas under ice water cooling, and pass 268g of methyl nitrite at 30-35°C. After completion, the reaction was continued at this temperature for 4 hours, the reaction was stopped, and ethanol was evaporated under reduced pressure to obtain a crude product. Under reduced pressure distillation, 297 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl was obtained with a yield of 83.0%.

Example Embodiment

[0020] Example 2
[0021] In a 2000-liter reactor, add 600g of ethanol and 238g of 4,4'-diacetyl biphenyl, pass 42g of dry hydrogen chloride gas under ice water cooling, and pass 268g of ethyl nitrite at 30-35℃. After completion, the reaction was continued at this temperature for 4 hours, the reaction was stopped, and ethanol was evaporated under reduced pressure to obtain a crude product. Under reduced pressure distillation, 298 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl was obtained with a yield of 83.2%.

Example Embodiment

[0022] Example 3
[0023] In a 2000-liter reactor, add 600g ethanol and 238g bis(4-diacetylphenyl)methane, pass 38g dry hydrogen chloride gas under ice water cooling, and pass 330g ethyl nitrite at 30-35℃ After passing through, continue to react at this temperature for 4 hours, stop the reaction, and distill off the ethanol under reduced pressure to obtain a crude product. Under reduced pressure distillation, 357 g of 4,4'-bis(2,2-dialkoxyacetyl)biphenyl was obtained with a yield of 86.2%.

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Primer pair, probe, kit and method for detecting murine rotavirus by adopting fluorescence quantitative RT-PCR (reverse transcription-polymerase chain reaction)

InactiveCN106868214AOptimize reaction conditionsSpecificity and Repeatability Guaranteed
Owner:SHANGHAI VETERINARY RES INST CHINESE ACAD OF AGRI SCI +3

Primer pair, probe, kit and method for detecting I-type bovine herpes virus

InactiveCN107686865AOptimize reaction conditionshigh sensitivity
Owner:NANJING AGRICULTURAL UNIVERSITY +4

Enzymatic synthesis method of bimatoprost intermediate

ActiveCN112481313AOptimize reaction conditionsReduce by-product formation
Owner:JIANGSU ALPHA PHARM CO LTD

Primer for rapidly detecting carp edema virus and method thereof

InactiveCN109487010Aavoid pollutionOptimize reaction conditions
Owner:广州动佰生物科技有限公司 +3

Method for controlling temperatures of catalysts

ActiveCN105709667AOptimize reaction conditionsImprove efficiency
Owner:石宝珍

Classification and recommendation of technical efficacy words

  • Optimize reaction conditions

Preparation method of lactulose

InactiveCN103864858AOptimize reaction conditionsHigh yield of lactulose
Owner:JIANGNAN UNIV

Primer pair, probe, kit and method for detecting I-type bovine herpes virus

InactiveCN107686865AOptimize reaction conditionshigh sensitivity
Owner:NANJING AGRICULTURAL UNIVERSITY +4

Primer for rapidly detecting carp edema virus and method thereof

InactiveCN109487010Aavoid pollutionOptimize reaction conditions
Owner:广州动佰生物科技有限公司 +3

Method for controlling temperatures of catalysts

ActiveCN105709667AOptimize reaction conditionsImprove efficiency
Owner:石宝珍

Enzymatic synthesis method of bimatoprost intermediate

ActiveCN112481313AOptimize reaction conditionsReduce by-product formation
Owner:JIANGSU ALPHA PHARM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products