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Dendritic macromolecular photoinitiator with low biotoxicity as well as preparation and application of dendritic macromolecular photoinitiator

A low biological toxicity, photoinitiator technology, applied in the direction of organic chemistry, can solve the problem of decreased solubility and achieve the effect of reduced mobility and low biological toxicity

Inactive Publication Date: 2021-02-05
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some photoinitiators in the photoinitiator list have been evaluated, and Nestlé also prohibits their use in Nestlé packaging. Negative photoinitiators include 1173, 184, 651, 907, ITX, BP, TPO, etc.
[0005] Macromolecular photoinitiators can overcome the disadvantages of small molecule photoinitiators such as easy migration, volatilization, and odor to a certain extent, but long-chain macromolecular photoinitiators often have chain entanglements between molecules that lead to their dissolution. performance decline, thereby affecting its use

Method used

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  • Dendritic macromolecular photoinitiator with low biotoxicity as well as preparation and application of dendritic macromolecular photoinitiator
  • Dendritic macromolecular photoinitiator with low biotoxicity as well as preparation and application of dendritic macromolecular photoinitiator
  • Dendritic macromolecular photoinitiator with low biotoxicity as well as preparation and application of dendritic macromolecular photoinitiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Synthesize according to the following route

[0045]

[0046] (a): A magnetic stirrer was placed in a 100mL three-neck flask equipped with a constant pressure dropping funnel and a condenser, and 1.98g (1eq) of 3-methyldibenzothiophene and 200ml of anhydrous dibenzothiophene were added sequentially in an ice bath. Chloromethane (solvent), 3.62g (2.5eq) aluminum trichloride (catalyst), after stirring evenly, slowly add 1.83g (1.5eq) methyl oxalyl chloride (acylating reagent), keep the system temperature below 10°C, After the dropwise addition, return to room temperature and react for about 4 hours, and track through a thin-layer silica gel plate during the reaction. After the reaction was complete, the mixture was poured into ice water, hydrochloric acid was added dropwise for hydrolysis, extracted with dichloromethane, the organic layer was washed with saturated sodium chloride solution until neutral, dried with anhydrous sodium sulfate, and the organic...

Embodiment 2

[0049] Embodiment 2: Synthesize according to the following route

[0050]

[0051] The synthesis method of compound (I)-b is the same as Example 1, and will not be described in detail here.

[0052] (c): with 1.81g (1eq) compound (I)-b, 0.48g (0.2eq) end is the branched polyamidoamine of 4 hydroxyls and 1.22g (2eq) K 2 CO 3 Add there-necked flask, 5ml DMF is used as solvent, heat to solvent reflux, react about 4h, after cooling, filter off inorganic salt, solution is dripped in anhydrous ether, product is separated out, after filtering, dry to constant weight, obtain target product (I )-40.72g, yield 62.1%.

Embodiment 3

[0053] Embodiment 3: Synthesize according to the following route

[0054]

[0055] The synthesis method of compound (I)-b is the same as Example 1, and will not be described in detail here.

[0056] (c): with 3.62g (1eq) compound (I)-b, 1.37g (0.1eq) end is the branched polyamide amine of 8 amino groups and 2.76g (2eq) K 2 CO 3 Add three-necked flask, 15ml DMF as solvent, heat to solvent reflux, react for about 4h, after cooling, filter off inorganic salt, solution is added dropwise in a large amount of anhydrous diethyl ether, product precipitates, after filtering, dry to constant weight, obtain target product ( I) - 73.02 g, yield 83.4%.

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PUM

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Abstract

The invention relates to the technical field of new material organic chemicals, in particular to a dendritic macromolecular photoinitiator with low biotoxicity as well as preparation and an application of the dendritic macromolecular photoinitiator. The invention relates to the technical field of photoinitiators, in particular to a photoinitiator, and particularly relates to a dendritic macromolecular photoinitiator with low biotoxicity, which takes dendritic polyamidoamine (PAMAM) as a macromolecular skeleton and realizes initiated polymerization based on a dibenzothiophene formyl formate group. The photoinitiator has the advantages of high initiation efficiency, low migration, low biotoxicity and the like, and has a wide application prospect in the fields of ultraviolet-visible radiationcuring photoinitiators, radiation curing formula products, photocureable coatings or printing ink and the like.

Description

【Technical field】 [0001] The invention relates to the technical field of new material organic chemicals, in particular to a class of photoinitiators, in particular to a class of low biological toxicity dendritic macromolecular photoinitiators, its chemical preparation technology, and its use as a radiation-curable photoinitiator Uses, and its application in radiation-curing formula products, especially in UV-Vis-LED light-curing coatings or inks, and many other occasions. 【Background technique】 [0002] Photoinitiator compounds are an important class of fine organic chemical materials. In the field of radiation curing technology using ultraviolet light or visible (UV) light or LED (i.e. Light-Emitting Diode) as light source, the photoinitiator compound that can generate free radical active species under light irradiation conditions is to induce ethylenically unsaturated The key substance for the system to carry out efficient photopolymerization, so it is one of the importan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08F2/48C07D333/76
CPCC07D333/76C08F2/48C08G73/028
Inventor 金明万德成
Owner TONGJI UNIV