Water-soluble thiaxanthon-polyether visible light initiator and preparing method and application thereof

A thioxanthone, water-soluble technology, applied in the field of water-soluble thioxanthone-polyether visible light initiator and preparation, can solve the disadvantageous advantages of macromolecular initiators, complex synthesis methods, hindering photoactive groups, etc. problem, to achieve the effect of improving the light initiation efficiency, strong penetrating ability, and high initiation efficiency
CN105601908AActive Publication Date: 2016-05-25WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2016-05-25

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Abstract

The invention relates to a water-soluble thiaxanthon-polyether visible light initiator and a preparing method and application thereof. Thioether is obtained from 4-bromaniline and derivatives of 4-bromaniline through nucleophilic substitution, aromatic amine is introduced into a thiaxanthon structure through concentrated acid dehydration cyclization, then chloromethyl is introduced onto a photoinitiator through nucleophilic substitution, and the thiaxanthon visible light initiator containing a polyether chain segment is formed through nucleophilic substitution. Due to the introduction of polyether, the water solubility of the product is high, various raw materials can be provided for the polymer due to various choices of polyether molecular weight, and then the structure and solubility of the polymer are flexible and changeable. The light initiator can be applied to visible light polymerization of unsaturated active materials. Due to the fact that the light initiator is a macromolecule light initiator and free of toxin, micromolecule additives are not needed, toxic micromolecule fragments are not generated during initiation or after initiation, and the light initiator can be used for preparing food-grade products.
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Description

technical field

[0001] The invention relates to the field of photoinitiators, in particular to a water-soluble thioxanthone-polyether visible light initiator, a preparation method and application. Background technique

[0002] Photopolymerization is a very important technology that is widely used in many fields, such as photocurable coatings, adhesives, inks, microelectronics, photoresists, etc. In these applications, the key process of controlling photopolymerization is photoinitiation. The photoinitiator absorbs light energy under the irradiation of light, and generates active species by itself or by interacting with co-initiators to initiate monomer polymerization, which affects the photocuring rate. play a decisive role. The absorption wavelength of the traditional photoinitiating system is generally less than 400nm, and it is mainly used in UV curing systems. The photoinitiating system developed in the early stage, such as organic peroxide, can modify its molecular st...

Claims

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