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Anthracene ring pillar aromatic hydrocarbon initiator and preparation method thereof

An anthracycline pillar aromatic hydrocarbon and pillar aromatic hydrocarbon technology are applied in the application and preparation field of anthracene pillar aromatic hydrocarbon as a photoinitiator, and can solve the problems of strong odor, high toxicity, leaching of harmful substances and the like

Inactive Publication Date: 2021-02-26
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, many types of I-type cleavage-type and II-type hydrogen-absorbing free radical photoinitiators that are currently commercialized face problems such as high toxicity, strong odor, and leaching of harmful substances after photolysis, which limits the use of photoinitiators in food packaging or Biomedical Applications

Method used

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  • Anthracene ring pillar aromatic hydrocarbon initiator and preparation method thereof
  • Anthracene ring pillar aromatic hydrocarbon initiator and preparation method thereof
  • Anthracene ring pillar aromatic hydrocarbon initiator and preparation method thereof

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Embodiment 1

[0026] Such as Figure 4 , Take 300 mg of dimethoxyanthracene (AOCH3), dissolve it in 100 mL of dry dichloromethane, add 117 mg of paraformaldehyde, then add 47 μL of trifluoroacetic acid, and stir at room temperature for 9 h under the protection of argon. The reaction was quenched by adding 50 mL of water, and the organic layer was spin-dried, and separated by silica gel chromatography to obtain anthracycline columnarene (AP4OCH3). The eluent is petroleum ether:ethyl acetate=1.5:1.

[0027] preferred, such as Figure 5 , we choose anthracycline columnarene (AP4OCH3) with methoxy groups at both ends as the initiator, and PEGDA with two double bonds as the monomer. Weigh 10mg AP4OCH3, dissolve it in 1g PEGDA monomer, and configure an initiator-monomer mixed system with a mass fraction of 1%. Then under the irradiation of 365nm, 385nm, 395nm and 405nm LED lamps, the photopolymerization kinetics curve was measured by real-time infrared.

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Abstract

The invention relates to the technical field of photo initiators, and provides an application of anthracene ring pillar aromatic hydrocarbon as a photo-polymerization initiator and a preparation method thereof. Anthracene ring pillar aromatic hydrocarbon has a large ring structure formed by methylene bridged anthracene units. The initiator is a novel photo initiator. Under light irradiation, anthracene ring pillar aromatic hydrocarbon large ring molecules are broken to form double-free-radical straight-chain oligomers, and the photo-polymerization reaction of monomers can be efficiently initiated. Compared with developed pillar aromatic hydrocarbons and anthracene ring pillar aromatic hydrocarbon initiators, the absorption wavelength of the anthracene ring pillar aromatic hydrocarbons is long, strong light absorption is achieved between 200 nm and 450 nm, and photo-induced polymerization of near ultraviolet visible light can be achieved. Compared with a traditional commercial photo initiator, the photo initiator provided by the invention is safe and non-toxic, small molecular fragments are not generated after light irradiation, and the migration of the photo initiator can be greatly reduced, so that the problems of toxicity, odor and the like of a photo-polymerization curing product are avoided.

Description

Technical field: [0001] The invention belongs to the field of photopolymerization and photocuring, and in particular relates to the application of anthracycline pillar arene as a photoinitiator and its preparation method. Background technique: [0002] In recent years, with the popularization and use of LED light sources in the field of photopolymerization, there are new requirements for the absorption wavelength of commercial photoinitiators. It is a photoinitiator to extend the absorption wavelength of commercial photoinitiators and match them with LED light sources. A major technical problem to be solved in the field. In addition, many types of I-type cleavage-type and II-type hydrogen-absorbing free radical photoinitiators that are currently commercialized face problems such as high toxicity, strong odor, and leaching of harmful substances after photolysis, which limits the use of photoinitiators in food packaging or Biomedical applications. [0003] Aiming at these pr...

Claims

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Application Information

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IPC IPC(8): C08F2/48C07C41/30C07C43/21
CPCC08F2/48C07C41/30C07C43/21C07C2603/92
Inventor 常银成宋秋艳马贵平聂俊
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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