Dendritic visible photoinitiator and its preparation method and application

A visible light and dendritic technology, applied in the field of photoinitiation, can solve the problems of weak anti-migration ability, high volatility, and single function, and achieve the effect of cheap light source, high initiating efficiency and strong penetrating ability

Active Publication Date: 2022-03-04
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many types of small molecule initiators and their development is relatively mature, small molecule visible light initiators have disadvantages such as heavy odor, high volatility, weak anti-migration ability, poor environmental compatibility, poor resin compatibility, and single function.

Method used

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  • Dendritic visible photoinitiator and its preparation method and application
  • Dendritic visible photoinitiator and its preparation method and application
  • Dendritic visible photoinitiator and its preparation method and application

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preparation example Construction

[0022] The preparation method of dendritic perylene imide visible light initiator of the present invention comprises the steps:

[0023] (1) The end group of the intermediate is a dendrimer (PAE (=) of 8 acrylates 8 ) synthesis: mix trimethylolpropane triacrylate, ethylenediamine, and anhydrous methanol, heat to 30°C, react for 6 hours, wash with anhydrous methanol to obtain a colorless and transparent viscous liquid, and react The formula is as follows:

[0024]

[0025] (2) Dendrimers with 8 primary amino groups at the end of the intermediate (PAE(NH 2 ) 8 ) synthesis: the PAE (=) 8 Mix with ethylenediamine, heat to 30°C, react for 24 hours, distill under reduced pressure, wash with ethyl acetate to obtain light yellow transparent viscous liquid, the reaction formula is as follows:

[0026]

[0027] (3) Synthesis of intermediate 3,4,9,10-perylenetetracarboxylic-3,4,-anhydride-9-carboxylic acid-10-carboxylate potassium: 3,4,9,10-perylenetetracarboxylic anhydride Hy...

Embodiment 1

[0035] Embodiment 1: the preparation of visible light initiator

[0036] (1) The end group of the intermediate is a dendrimer (PAE (=) of 8 acrylates 8 ) synthesis: mix 60g of trimethylolpropane triacrylate, 2.4g of ethylenediamine, and 30mL of anhydrous methanol, heat to 30°C, react for 6 hours, wash with anhydrous methanol, and obtain a colorless and transparent viscous liquid .

[0037] (2) Dendrimers with 8 primary amino groups at the end of the intermediate (PAE(NH 2 ) 8 ) synthesis: 4.665g PAE (=) 8 Mix with 108g of ethylenediamine, heat to 30-50°C, react for 24 hours, distill under reduced pressure, wash with ethyl acetate to obtain light yellow transparent viscous liquid.

[0038] (3) Synthesis of intermediate 3,4,9,10-perylenetetracarboxylic-3,4-anhydride-9-carboxylic acid-10-carboxylate potassium: add 3,4,9,10-perylenetetracarboxylic anhydride In the KOH solution, wrap it in aluminum foil to avoid light, heat to 90°C, and react until the pH value is about 10.5. ...

Embodiment 2

[0042] Embodiment 2: The influence of the amount of PAE-PDI-AA on the initiation performance of acrylamide

[0043] Dissolve 2.0g of acrylamide (monomer) and a certain amount of PAE-PDI-AA in 2mL of water, shake evenly on a mixer, and then place it under a 100W visible light source with a distance of 15cm from the light source for 30min. After the light was finished, the polymer was washed with methanol, dried, weighed, and the monomer conversion rate was calculated. The results are shown in Table 1.

[0044] Table 1 Effect of the amount of PAE-PDI-AA on the initiation performance of acrylamide

[0045]

[0046] Note: The amount in PAE-PDI-AA amount / % refers to the percentage of PAE-PDI-AA in monomer content.

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Abstract

The invention discloses a dendritic visible light initiator and its preparation method and application. The invention combines the chromophore monopotassium perylene monoacid anhydride with 6-aminocaproic acid to obtain a visible light-sensitive initiator system, which is introduced into The dendritic compound is obtained to obtain a dendritic visible light initiator, which is used as a visible light initiator for the polymerization reaction of a photocurable system containing an unsaturated double bond water-soluble monomer. The initiator greatly improves the visible light initiation efficiency, and has the characteristics of environmental protection, good compatibility, and low energy consumption.

Description

technical field [0001] The invention relates to photoinitiation technology, in particular to a visible light initiator for initiating dendrites of water-soluble monomers containing unsaturated double bonds and its preparation method and application. Background technique [0002] Photocuring technology has become an integral part of the field of polymer science and technology. Photoinitiation not only consumes less energy, but also has high polymerization efficiency and is environmentally friendly. It has now become a key component of photocuring technology. [0003] Since the energy of ultraviolet light is much higher than that of visible light, the development of ultraviolet photoinitiators is more mature. However, there are many problems caused by ultraviolet light that cannot be ignored. When ultraviolet light acts on the human body, it will cause headaches, dizziness, eye irritation, dermatitis, and even skin cancer. Compared with ultraviolet light, visible light can d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00C08F126/10C08F120/56C08F120/20C08F2/48
CPCC08F120/56C08F120/20C08F126/10C08F2/48C08G83/003
Inventor 宁春花周弟孙舒辰刘芷倩鲁雨洁
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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