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Thioxanthone organic zirconium complex photoinitiator, preparation method therefor and application of thioxanthone organic zirconium complex photoinitiator

A technology of thioxanthone and photoinitiator, which is applied in the field of thioxanthone organic zirconium complex photoinitiator and its preparation, can solve the problem of decreased conversion rate of polymer system, light shielding effect of volume shrinkage, and incomplete surface curing and other problems, to achieve the effect of excellent photoinitiating activity, convenient source of reaction raw materials, and excellent photoinitiating activity

Active Publication Date: 2019-12-20
苏州欧纳克纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a serious problem of oxygen inhibition in free radical photopolymerization. The existence of oxygen will consume free radicals, resulting in a decrease in the conversion rate of the polymer system and incomplete surface curing, which affects the performance of the material.
Although increasing the light intensity or the concentration of the initiator can effectively solve the problem of oxygen inhibition, but too high light intensity or the concentration of the initiator will aggravate the volume shrinkage or cause light shielding effect

Method used

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  • Thioxanthone organic zirconium complex photoinitiator, preparation method therefor and application of thioxanthone organic zirconium complex photoinitiator
  • Thioxanthone organic zirconium complex photoinitiator, preparation method therefor and application of thioxanthone organic zirconium complex photoinitiator
  • Thioxanthone organic zirconium complex photoinitiator, preparation method therefor and application of thioxanthone organic zirconium complex photoinitiator

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Embodiment 1

[0027] A preparation method of a thioxanthone organic zirconium complex photoinitiator, specifically comprising the steps of:

[0028] 1) Under the protection of nitrogen gas, place 2-chlorothioxanthone in 0.1mol / L sodium hydroxide ethanol solution, the mass concentration of 2-chlorothioxanthone in the solution is 100mg / L, under mechanical stirring Add ethylene glycol dropwise, the molar ratio of 2-chlorothioxanthone to ethylene glycol is 1:1.1, reflux for 24 hours, after the reaction is completed, wash with dichloromethane after rotary evaporation, concentrate, crystallize and purify to obtain mid product;

[0029] 2) Under the protection of nitrogen gas, the intermediate product obtained in step 1) is placed in a DMF solvent, the mass concentration of the intermediate product in the DMF solvent is 100 mg / L, triethylamine is added, and the zirconium n-propoxide solution is added dropwise under stirring, The molar ratio of the intermediate product to zirconium n-propoxide is ...

specific Embodiment 2-6

[0030] Specific embodiment 2-6, other are with specific embodiment 1, difference is following table:

[0031]

[0032] The thioxanthone organic zirconium complex photoinitiator obtained in Example 1 was used as the basic material in the application example, and it was applied to the photocurable varnish.

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Abstract

The invention belongs to the field of organic functional materials and particularly relates to a thioxanthone organic zirconium complex photoinitiator, a preparation method therefor and an applicationof the thioxanthone organic zirconium complex photoinitiator. The photoinitiator has a structural formula represented by a formula (I) shown in the description. The thioxanthone organic zirconium complex photoinitiator disclosed by the invention has excellent photo-initiation activity, active zirconium serves as a center ligand, can be used for effectively overcoming oxygen polymerization inhibition and is used for initiating polymerization monomers, and the conversion ratio is relatively high; the preparation method is simple in operation, convenient in source of reactants and low in cost, is environmentally friendly and pollution-free and is applicable to large-scale industrial production; and when the thioxanthone organic zirconium complex photoinitiator is applied to the field of light-curing, the thioxanthone organic zirconium complex photoinitiator not only has excellent photo-initiation activity, but also has the advantages of low mobility, low odor, low toxicity, yellowing resistance and the like.

Description

technical field [0001] The invention belongs to the field of organic functional materials, in particular to a thioxanthone organic zirconium complex photoinitiator and its preparation method and application. Background technique [0002] UV curing technology is the process of using ultraviolet light to trigger the rapid transformation of chemically reactive liquid substances into solid substances. This technology has the characteristics of high efficiency, wide adaptability, economy, energy saving and environmental friendliness. It is widely used in the fields of printing plate making, stereolithography, ink, coating, adhesive, food packaging and medical biomaterials. [0003] The essence of ultraviolet light curing reaction is the polymerization and crosslinking reaction initiated by ultraviolet light. Any light curing system includes at least the following three components: (1) resin, which gives the material basic physical and chemical properties; (2) monomer , is mainly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/00C08F2/50
CPCC07F7/003C08F2/50
Inventor 张玉贞华叶莹
Owner 苏州欧纳克纳米科技有限公司
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