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Macromolecular photoinitiator and preparation method thereof

A photoinitiator and macromolecular technology, which is applied in the field of macromolecular photoinitiator and its preparation, can solve the problems of pollution, easy migration environment, difficult migration, etc., and achieve the effect of wide source of raw materials, high efficiency and high initiation efficiency

Inactive Publication Date: 2020-06-05
华月圆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of macromolecular photoinitiator and preparation method thereof, it uses celery A macromolecular photoinitiator material has been obtained through multi-step reactions such as coupling and polycondensation using element, brominated hydrocarbon, binary secondary amino structure, and 4-hydroxybenzophenone derivatives. Efficiency, difficult to migrate, and environmental protection advantages, but also has high-efficiency antibacterial properties. It is foreseeable that this material will usher in a broad market prospect, especially for food packaging, medical treatment, kitchen and bathroom coatings and other fields.

Method used

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  • Macromolecular photoinitiator and preparation method thereof
  • Macromolecular photoinitiator and preparation method thereof
  • Macromolecular photoinitiator and preparation method thereof

Examples

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Embodiment 1

[0038] Step (1) Add 1mol apigenin (A), 2.4mol 1,2-dibromoethane (B), and 1.2mol potassium carbonate to 70mol N,N-dimethylformamide, heat to 120°C and stir vigorously for 2h , cooled, and after standing still, the solution was concentrated in vacuo, and the residual components were enriched; slowly added 90mol of water, stirred for 30min, then added 100mol of ethyl acetate, stirred for 30min, stood for stratification, and took the organic phase with anhydrous Sodium sulfate is dried, filtered, and rotary evaporated to obtain intermediate product I (IR: 1638cm -1 :-C=C-exists; 1580cm -1 、1471cm -1 、1441cm -1 : benzene ring exists; 3512cm -1 : Phenol-OH weakened; 644cm -1 :-C-Br generated).

[0039] Step (2) Add 1mol I and 1.2mol piperazine (C) to 50mol anhydrous N,N-dimethylformamide, heat to 85°C, stir vigorously for 2h, cool, let stand, and concentrate in vacuo; slowly Add 70 mol of water, stir for 30 min, then add 100 mol of ethyl acetate, stir for 30 min, stand to sepa...

specific Embodiment 2-6

[0042] Specific embodiment 2-6, other are with specific embodiment 1, difference is following table:

[0043]

[0044]

[0045] The macromolecular photoinitiator obtained in Example 1 was used as the base material of the application example, and it was made into a photocurable varnish.

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Abstract

The invention belongs to the field of new materials. The invention relates to a macromolecular photoinitiator and a preparation method thereof. The method comprises the steps: with apigenin, bromo-hydrocarbon, a binary secondary amino structure and a 4-hydroxybenzophenone derivative as raw materials, a series of reaction such as coupling, condensation polymerization and the like are carried out toprepare the macromolecular photoinitiator material. The novel macromolecular photoinitiator not only effectively solves the problems that the existing micromolecular photoinitiator has oxygen inhibition or needs to be added with an auxiliary initiator and is easy to migrate to cause environmental pollution and the like, but also has high-efficiency antibacterial performance. It can be foreseen that the product can make a wide market prospect, and is particularly suitable for the fields of food packaging, medical treatment, kitchen and bath coatings and the like.

Description

technical field [0001] The invention relates to a macromolecular photoinitiator and a preparation method thereof. The invention belongs to the field of new materials. Background technique [0002] In 1968, the German Bayer company developed an environmentally friendly and energy-saving UV curing material, which was also the first time that the concept of UV photoinitiators was proposed. Nowadays, with the rapid development of science and technology and modern industry, the most prominent in the field of materials today is UV-curable materials. Photoinitiators play an important role in UV-curable materials, and are popularized in UV-curable coatings, adhesives, printing plates, inks and other related industries. In recent years, the laws and regulations on energy saving and environmental protection have been further improved, and there are new requirements for UV curing products. The specific standards include: high efficiency, energy saving, adaptability, environmental fri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F2/48C08G73/06C08G73/00C09D175/14C09D5/14
CPCC08F2/48C08G73/00C08G73/0633C09D5/14C09D175/14
Inventor 华月圆
Owner 华月圆