A kind of photoactive benzoxazine resin and preparation method thereof

A benzoxazine and photoactive technology, applied in the field of novel photoactive benzoxazine resin and its preparation, can solve the problems such as no photoactive benzoxazine products, achieve low softening temperature, simple curing process, Effect of low volume shrinkage of material
CN108997548BActive Publication Date: 2020-11-03SOUTHWEST PETROLEUM UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST PETROLEUM UNIV
Publication Date
2020-11-03

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Abstract

The invention discloses photo-active benzoxazine resin which is prepared through a ring-opening polymerization reaction to a benzoxazine monomer, containing an azo structure, under heating condition.A preparation method includes: (1) feeding aldehyde and phenol compounds and a dispersion medium into a reaction kettle and heating the mixture to 45-65 DEG C, wherein the molecular structure of the phenol compound or primary amine compound contains an azo group; (2) adding the primary amine compound, performing a reaction at constant temperature of 45-65 DEG C for 1-4 h in a nitrogen atmosphere;(3) heating the reaction liquid to 75-150 DEG C and performing a reflux reaction for 6-8 h; (4) cooling the product to room temperature, separating an organic phase, removing the dispersion medium anddrying the product to obtain the benzoxazine monomer; (5) performing the ring-opening polymerization reaction to the monomer for preparing the photo-active benzoxazine resin which can be applied to the fields such as photochromic and optic-sensing devices, anti-fake products and biomedical technology.
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Description

technical field

[0001] The invention belongs to the technical field of organic polymer materials, and in particular relates to a novel photoactive benzoxazine resin and a preparation method thereof. Background technique

[0002] Photoactive materials can produce reversible discoloration effects under the irradiation of ultraviolet light and visible light, and their special optical properties have broad application prospects in optoelectronic fields such as optical information storage, anti-counterfeiting, and optical switches. Photoactive materials can also be used as nanocarriers for drug encapsulation and light-controlled release. According to the performance characteristics of such materials, photoactive materials are usually also called photochromic materials. The so-called photochromism means that a compound A changes its structure under the light of a certain wavelength to produce another chemical compound B with a different absorption spectrum. When under the illumi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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