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Preparation method and application of alkoxy benzanthrone photoinitiator

A technology of alkoxybenzoxanthrone light and bromobenzoxanthrone, which is applied in the field of photocuring synthesis, can solve problems such as poor compatibility, low crosslinking rate, and insufficient tensile strength of crosslinked materials, and achieve compatibility Improvement, high cross-linking efficiency, superior mechanical properties and heat resistance

Active Publication Date: 2020-02-11
ANQING FEIKAI NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the polymerizable photoinitiator prepared by the above-mentioned patent is used alone, the rate of initiating crosslinking is low, and the compatibility with polyethylene or polypropylene is poor, resulting in insufficient tensile strength of the crosslinked material

Method used

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  • Preparation method and application of alkoxy benzanthrone photoinitiator
  • Preparation method and application of alkoxy benzanthrone photoinitiator
  • Preparation method and application of alkoxy benzanthrone photoinitiator

Examples

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Embodiment 1

[0036] A preparation method of an alkoxybenzoxantrone photoinitiator, wherein the alkoxybenzoxantrone photoinitiator is mainly made of the following raw materials in parts by weight: 1 part of 3-bromobenzoxantrone, ethanol 4 parts, 2 parts of potassium carbonate, 10 parts of methylene chloride, 5 parts of water; including the following steps:

[0037] (1) Mix 3-bromobenzoxantrone, ethanol, and potassium carbonate according to the above parts by weight, stir evenly, heat up to 120°C, monitor by TLC (PE:EA=1:1), and after 5 hours, 3-bromobenzene After the reaction of the surrounding anthrone is complete, stop the reaction, cool to room temperature, add 5 parts of dichloromethane and the above parts by weight of water in sequence, stir for 20 minutes, then stand and separate to obtain the aqueous phase and the organic phase;

[0038] In this embodiment, 3-bromobenzothrone and alkyl alcohol carry out etherification reaction to synthesize alkoxybenzoxantrone. The equation is as fol...

Embodiment 2

[0052] A preparation method of an alkoxybenzoxanthone photoinitiator, the alkoxybenzoxanthrone photoinitiator is mainly made of the following raw materials in parts by weight: 1 part of 3-bromobenzoxanthrone, acetone 4 parts of alcohol, 2 parts of potassium carbonate, 10 parts of dichloromethane, 5 parts of water, comprising the following steps:

[0053] (1) Mix 3-bromobenzoxantrone, propanol and potassium carbonate according to the above parts by weight, stir evenly, heat up to 125°C, monitor by TLC (PE:EA=1:1), after 6 hours, 3-bromobenzene After the reaction of the surrounding anthrone is complete, stop the reaction, cool to room temperature, add 5 parts of dichloromethane and the above-mentioned parts by weight of water in sequence, stir for 25 minutes, then stand and separate to obtain the aqueous phase and the organic phase;

[0054] (2) The aqueous phase was extracted with another 5 parts of dichloromethane, the combined organic phases were dried with anhydrous sodium s...

Embodiment 3

[0059] A preparation method of an alkoxybenzoxantrone photoinitiator, wherein the alkoxybenzoxantrone photoinitiator is mainly made of the following raw materials in parts by weight: 1 part of 3-bromobenzoxantrone, butyl 4 parts of alcohol, 2 parts of potassium carbonate, 10 parts of dichloromethane, 5 parts of water, comprising the following steps:

[0060] (1) Mix 3-bromobenzoxantrone, ethanol, and potassium carbonate according to the above parts by weight, stir evenly, heat up to 120°C, monitor by TLC (PE:EA=1:1), and after 6 hours, 3-bromobenzene After the reaction of the surrounding anthrone is complete, stop the reaction, cool to room temperature, add 5 parts of dichloromethane and the above parts by weight of water in sequence, stir for 30 minutes, then stand and separate to obtain the aqueous phase and the organic phase;

[0061] (3) The aqueous phase was extracted with another 5 parts of dichloromethane, the combined organic phases were dried over anhydrous sodium sul...

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Abstract

The invention discloses a preparation method of an alkoxy benzanthrone photoinitiator, relates to the technical field of photocuring synthesis, and is provided to solve the problems that existing photoinitiators have poor compatibility with polyethylene or polypropylene, leading to insufficient tensile strength of crosslinked materials. The preparation method comprises the steps as follows: (1) mixing and stirring 3-bromobenzanthrone, alkyl alcohol and inorganic base, and then, stirring and mixing the obtained mixture with dichloromethane and water; and (2) carrying out recrystallization to prepare alkoxy benzanthrone. The invention further provides the alkoxy benzanthrone photoinitiator prepared by the method and application of the alkoxy benzanthrone photoinitiator. The alkoxy benzanthrone photoinitiator has the beneficial effects as follows: the alkoxy benzanthrone prepared by the method is used as the photoinitiator, an alkoxy structure is embedded in the structure to improve the molecular weight and solubility property of the photoinitiator, so that the photoinitiator has high crosslinking efficiency with a copolymer, and a material has good tensile strength and excellent mechanical properties and heat resistance.

Description

technical field [0001] The invention relates to the technical field of photocuring synthesis, in particular to a preparation method and application of an alkoxybenzoxanthrone photoinitiator. Background technique [0002] Light curing has been widely used in many important technical fields, especially because of its own advantages, low volatile organic compound (VOC) release, is a green technology, mainly used in fast curing coatings, printing inks and adhesives agents etc. 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 radi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C08J3/24C08J3/28C08L23/06C07C45/64C07C49/84
CPCC08F2/48C08J3/24C08J3/28C07C45/64C08J2323/06C07C49/84
Inventor 胡来月钟晓峰王婷代俊陶钱铸杨梅
Owner ANQING FEIKAI NEW MATERIAL CO LTD
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