Benzanthrone-based bimolecular initiator as well as preparation method and application thereof

A technology of benzoxantrone and photoinitiator, which is applied in the field of bimolecular photoinitiator based on benzoxantrone and its preparation, can solve the problems of low curing efficiency of photoinitiator, improve photoinitiation efficiency, improve phase Capacitive, conducive to the effect of factory production

Active Publication Date: 2021-06-25
ANQING FEIKAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] One of the technical problems solved by the present invention is that existing photoinitiators have the problem of low curing efficiency, and a kind of photoinitiator based on benzoxantrone is provided, and the photoinitiator has good compatibility, higher High curing efficiency, and no bad smell after photolysis, therefore, it also has the characteristics of safety and environmental protection

Method used

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  • Benzanthrone-based bimolecular initiator as well as preparation method and application thereof
  • Benzanthrone-based bimolecular initiator as well as preparation method and application thereof
  • Benzanthrone-based bimolecular initiator as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The synthetic equation general formula of the bimolecular initiator based on benzoantrone:

[0043]

[0044] where the R 1 , R 2 , R 3 , R 4 and R 5 The same or different independently represent H or methyl, and the R 1 , R 2 , R 3 , R 4 and R 5 Not H at the same time.

Embodiment 2

[0046]

[0047] The preparation method of the bimolecular photoinitiator based on benzanthrone comprises the following steps:

[0048] (1) Mix 100mL of dichloromethane, 183g of tribenzoyl chloride, 230g of benzoanthrone and 267g of aluminum trichloride, stir and heat up to 40°C, react for 6h, cool to room temperature, and slowly pour into ice water, After stirring, let stand to separate layers to obtain the water phase and the organic phase, extract the water phase with dichloromethane, combine the extracted product with the organic phase, dry it with a desiccant, and distill off the dichloromethane under a water bath at 40 degrees under reduced pressure to obtain product crude product;

[0049](2) Add the crude product obtained in step (1) into the reaction flask together with 1000mL ethanol, heat to 80°C, reflux for 5h, then cool to room temperature, filter, and dry to obtain a photoinitiator based on benzanthrone . The obtained compound was confirmed and characterized ...

Embodiment 3

[0051] The preparation method of the bimolecular photoinitiator based on benzanthrone comprises the following steps:

[0052]

[0053] (1) Mix 100mL dichloromethane, 155g p-toluoyl chloride, 230g benzoanthrone and 267g aluminum trichloride, stir and heat up to 40°C, react for 6h, cool to room temperature, slowly pour into ice water, stir After standing for stratification, the aqueous phase and the organic phase were obtained, the aqueous phase was extracted with dichloromethane, the extracted product was combined with the organic phase, dried with a desiccant, and dichloromethane was removed by distillation under reduced pressure at 40 degrees under a water bath to obtain the product crude product;

[0054] (2) Add the crude product obtained in step (1) into the reaction flask together with 1000mL ethanol, heat to 80°C, reflux for 5h, then cool to room temperature, filter, and dry to obtain a photoinitiator based on benzanthrone . The obtained compound was confirmed and c...

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PUM

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Abstract

The invention discloses a benzanthrone-based photoinitiator, and relates to the technical field of photoinitiators, the structural general formula of the photoinitiator is as follows: R1, R2, R3, R4 and R5 are the same or different and independently represent H or methyl; The invention also provides a preparation method of the photoinitiator, which takes alkyl benzoyl chloride and benzanthrone as substrates, and a target product is obtained through Friedel-Crafts acylation reaction.

Description

technical field [0001] The invention relates to the technical field of photoinitiators, in particular to a bimolecular photoinitiator based on benzoantrone and its preparation method and application. Background technique [0002] Light curing has been widely used in many important technical fields, especially because of its own advantages, low VOC release, is a green technology, mainly used in fast curing coatings, printing inks and adhesives. Photoinitiators play an important role in UV curing systems, they can absorb specific wavelengths of energy to generate active species to initiate the polymerization of the entire system. The photoinitiators currently used for polyethylene crosslinking can be divided into two categories: cracking photoinitiators and hydrogen abstraction photoinitiators. After the cracking photoinitiator absorbs the energy of ultraviolet light and jumps to the excited state, it breaks the bond itself to generate free radicals. Such initiators mainly i...

Claims

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Application Information

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IPC IPC(8): C07C49/792C07C45/46C08J3/28C08L23/06
CPCC07C49/792C08J3/28C07C2603/42C08J2323/06Y02P20/10
Inventor 胡来月钟晓峰杨梅代俊陶钱铸
Owner ANQING FEIKAI NEW MATERIAL CO LTD
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