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Polymerizable water-soluble benzophenone type photoinitiator and preparation method thereof

A technology of benzophenones and photoinitiators, which is applied in the field of benzophenone photoinitiators and its preparation, can solve problems such as complex preparation methods, achieve good water solubility, improve water solubility, and high initiation efficiency Effect

Active Publication Date: 2015-07-08
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current research on water-soluble polymerizable photoinitiators is less, and the preparation method is more complicated, so there is an urgent need for a simple and efficient method for preparing water-soluble polymerizable photoinitiators

Method used

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  • Polymerizable water-soluble benzophenone type photoinitiator and preparation method thereof
  • Polymerizable water-soluble benzophenone type photoinitiator and preparation method thereof
  • Polymerizable water-soluble benzophenone type photoinitiator and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] (1) Weigh 0.05mol (16.1g) of 3,3',4,4'-benzophenone tetra-acid dianhydride and dissolve it in 50mL of dried ethyl acetate, add it to the Put 0.1mol (11.6g) of hydroxyethyl acrylate and 0.1385g of triphenylphosphine directly into the reaction solution in a three-necked flask with a tube and electronic stirring device, stir, heat the oil bath to 80°C, react for 5 hours and then cool to room temperature. The organic solvent was removed by rotary evaporation, washed and extracted with deionized water three times, and dried.

[0029] (2) In order to further improve water solubility, the product was dissolved in 100ml, 1mol / L sodium hydroxide solution, mixed uniformly, and dried again to obtain a polymerizable water-soluble benzophenone photoinitiator.

Embodiment 2

[0031] (1) Weigh 0.05mol (16.1g) of 3,3',4,4'-benzophenone tetra-acid dianhydride and dissolve it in 50mL of dried ethyl acetate, add it to the Add 0.1mol (13.0g) of hydroxyethyl methacrylate and 0.1455g of triphenylphosphine directly into the reaction solution in a three-necked flask with a tube and an electronic stirring device, stir, heat the oil bath to 80°C, and react for 10h After cooling to room temperature. The organic solvent was removed by rotary evaporation, washed and extracted with deionized water three times, and dried.

[0032] (2) In order to further improve water solubility, the product was dissolved in 100ml, 1mol / L potassium hydroxide solution, mixed uniformly, and dried to obtain a polymerizable water-soluble benzophenone photoinitiator.

Embodiment 3

[0034](1) Weigh 0.05mol (16.1g) of 3,3',4,4'-benzophenone tetra-acid dianhydride and dissolve it in 50mL of dried chloroform, and add it to the Add 0.01mol (13.0g) of hydroxypropyl acrylate and 0.0873g of triphenylphosphine directly into the reaction solution in a three-necked flask with a tube and an electronic stirring device, stir, heat the oil bath to 90°C, react for 15 hours and then cool to room temperature. The organic solvent was removed by rotary evaporation, washed and extracted with deionized water three times, and dried.

[0035] (2) In order to further improve water solubility, the product was dissolved in 100ml, 1mol / L diethylamine solution, mixed uniformly, and dried to obtain a polymerizable water-soluble benzophenone photoinitiator.

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Abstract

The invention provides a polymerizable water-soluble benzophenone type photoinitiator and a preparation method thereof. The preparation method comprises the following steps: enabling 3,3',4,4'-benzophenone tetracarboxylic dianhydride to react with an acrylate type monomer containing active hydrogen; introducing polymerizable double bonds into benzophenone molecules; and then adding an alkaline substance to react with carboxylic acid of a product self so as to improve the water solubility, thereby preparing the polymerizable water-soluble photoinitiator. The preparation method is simple to operate and high in product yield, and the obtained photoinitiator is migration-free, good in water solubility and high in initiation efficiency.

Description

Technical field: [0001] The invention belongs to an organic compound and a preparation method thereof, in particular to a polymerizable and water-soluble benzophenone photoinitiator and a preparation method thereof. Background technique: [0002] Photocuring technology is an energy-saving, clean and environmentally friendly technology, known as "green technology". Photocuring technology (UV) is a kind of photopolymerization technology that makes liquid oligomers (including monomers) polymerize at a high speed to form a solid state by irradiating ultraviolet light of a certain wavelength. joint reaction. The characteristics of photocuring technology are environmental protection, fast and low energy consumption. It is widely used in the fields of photocurable coatings, photocurable inks, photoresists, adhesives, laser 3D imaging, and 3D modeling. [0003] With the development of the photocuring technology industry, the requirements for photoinitiators are getting higher and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C07C69/76C07C67/08C07C235/84C07C231/02C07C327/28
Inventor 朱晓群陈博聂俊
Owner BEIJING UNIV OF CHEM TECH
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