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Coumarin-sesamol bio-based photoinitiator and preparation method thereof

A technology of photoinitiator and sesamol, applied in the field of coumarin-sesamol bio-based photoinitiator and preparation thereof, can solve problems such as application in the unfavorable biological field, large biological toxicity, etc., and achieves little damage to the environment and human body, The effect of good stability and photosensitivity, and broad application prospects

Inactive Publication Date: 2019-08-02
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dark chromophores of the above initiators are mostly benzophenone, thioxanthone, etc., which have high biological toxicity and are not conducive to the application in the biological field.

Method used

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  • Coumarin-sesamol bio-based photoinitiator and preparation method thereof
  • Coumarin-sesamol bio-based photoinitiator and preparation method thereof
  • Coumarin-sesamol bio-based photoinitiator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0040]

Embodiment 8

[0042] Performance measurement of coumarin-sesamol photoinitiator of the present invention

[0043] The compound 1-4 prepared in embodiment 4-7 is carried out performance measurement respectively, is prepared into 10 -5 The chloroform solution of mol / L, it is 200-450nm to measure its absorption band by ultraviolet-visible light spectrophotometer, and the ultraviolet-visible light absorption spectrum of compound 1-4 sees figure 1 .

Embodiment 9

[0045] Application of coumarin-sesamol photoinitiator of the present invention in 3D printing

[0046] Under the condition of avoiding light, add 1.0g of compound 3, 50g of trimethylolpropane triacrylate and 50g of ethoxylated trimethylolpropane triacrylate into a glass container equipped with a stirring bar, stir and shake for 24h, and make the compound 1 Dissolve completely, and you can get the light-curing material for 3D printing, pour it into the resin tank of the printer, the wavelength of the light source used by the printer is 405nm, call out the 3D model to be printed, and the printer will automatically print out the three-dimensional structure, such as figure 2 .

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Abstract

The invention provides a coumarin-sesamol photoinitiator and a preparation method thereof. The initiator provided by the invention has good absorption performance under a light source with the wavelength being 200-450 nm, the absorption band covers an ultraviolet region and extends to a visible region, and the initiator can be used as an ultraviolet / visible light initiator; at the same time, the reaction conditions are mild, and the structural body is a bio-based material. The initiator provided by the invention is short in preparation route, high in purity (more than 95%), good in stability and high in sensitivity, the absorption band covers the ultraviolet region and part of the visible light region, and the initiator can be used in the field of 3D printing, and is a universal type photoinitiator with excellent performance.

Description

technical field [0001] The invention relates to a coumarin-sesamol bio-based photoinitiator and a preparation method thereof, belonging to the technical field of chemical synthesis. Background technique [0002] Photopolymerization refers to the process of using light as an energy source to induce liquid unsaturated small molecules to be converted into solid macromolecules through polymerization reactions. Due to its unique advantages of high efficiency, energy saving, and environmental protection, it is widely used in various fields of life such as dental materials, wood, etc. Coatings, packaging materials, 3D printing materials, etc. Generally, photopolymerizable materials are mainly composed of matrix resin, additives, and photoinitiators. In practical applications, more components are usually included. The most important of these are photoinitiators and photosensitizers. They absorb photons to form free radicals or ions and other initiating active species, attacking mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D407/12C08F222/14C08F222/20C08F2/48B33Y70/00
CPCB33Y70/00C07D407/12C08F2/48C08F222/10C08F222/103
Inventor 方烽娜李梦琦闫岩董婧靓胡鹏李治全
Owner JIANGNAN UNIV
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