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A kind of photochromic ternary copolyester and its preparation method and application

A ternary copolyester, photochromic technology, used in color-changing fluorescent materials, chemical instruments and methods, optics, etc., can solve the problems of difficult degradation, high cost of photochromic polyester, poor mechanical properties, etc. Photochromic, sustainable development, high production efficiency

Active Publication Date: 2021-08-03
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a biodegradable photochromic ternary copolyester with excellent mechanical properties and its preparation method and application field, so as to overcome the high price, poor mechanical properties and difficult Degradation and other issues

Method used

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  • A kind of photochromic ternary copolyester and its preparation method and application
  • A kind of photochromic ternary copolyester and its preparation method and application
  • A kind of photochromic ternary copolyester and its preparation method and application

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preparation example Construction

[0067] In some embodiments, the preparation method includes: reacting the first mixed reaction system at 160-260° C. for 2-6 hours to obtain an intermediate product.

[0068] In some embodiments, the preparation method includes: reacting the second mixed reaction system in a vacuum environment at 190-300°C for 1-8 hours to obtain a photochromic ternary copolyester, the vacuum of the vacuum environment The degree is below 300Pa.

[0069] In some embodiments, the preparation method specifically includes: making the compound containing component A (ie, azobenzene compound), component B (ie, fatty dibasic acid or esterified product thereof), component C (ie, the second fat dihydric alcohol), esterification or transesterification catalyst, and react at 160-260°C for 2-6h to obtain an intermediate product; then add a polycondensation catalyst to react at 190-300°C and vacuum for 1-8h to obtain a photochromic three meta-copolyester.

[0070] Further, the preparation method of the p...

Embodiment 1

[0108] Mix azobenzenediol (formula 3), succinic acid, and decanediol (the second fatty diol) according to a molar ratio of 0.01:1:0.99, and then add a catalyst (tetrabutyl titanate, based on butyl The diacid is 0.2mol%) and the catalyst (antimony trioxide, based on succinic acid is 0.1mol%), are added to the reactor, under the condition of nitrogen protection, the temperature is raised to 160°C, the reaction is 6h, the vacuum is 60Pa, and the temperature is raised React at 300°C for 8 hours to obtain a photochromic ternary copolyester (structure as shown in formula 4). The photochromic response speed is 10 seconds, and it can be completely degraded in 180 to 240 days in outdoor natural soil.

[0109]

[0110] Formula (3)

[0111]

[0112] Formula (4)

[0113] The 1HNMR spectrum of azobenzenediol (formula 3) in the present embodiment is as follows figure 1 As shown, the reflectance curve of the photochromic ternary copolyester photochromism obtained finally is as follow...

Embodiment 2

[0115] Mix azobenzenediol (Formula 3), adipic acid, and decanediol (the second fatty diol) according to the molar ratio of 0.05:1:0.95, and then add the catalyst (tetrabutyl titanate, based on The diacid is 5mol%) and the catalyst (antimony trioxide, based on adipic acid is 5mol%), are added to the reactor, under the condition of nitrogen protection, the temperature is raised to 210°C, the reaction is 2h, the vacuum is 60Pa, and the temperature is raised to 300 ℃, reacted for 8 hours, and obtained the photochromic ternary copolyester (structure as in formula 5), ​​whose photochromic response speed is 10 seconds, and can be completely degraded in 180 to 240 days in outdoor natural soil.

[0116]

[0117] Formula (5)

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Abstract

The invention discloses a photochromic ternary copolyester as well as a preparation method and application thereof. The photochromic ternary copolyester has the following structure: R m and R n Selected from H, F, Cl, Br, I, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, nitro, methoxy, etc., m is an integer of 1 to 4, n is An integer from 5 to 8, R a It is a residue of fatty dibasic acid, p is 20-200, q is 20-200, and x is an integer of 2-10. The preparation method comprises: preparing photochromic ternary copolyester through copolymerization of aliphatic dibasic acid compound or its esterified product, azobenzene compound and other diols. The photochromic ternary copolyester of the present invention has a photochromic response speed of less than 20 seconds and has good biodegradability and mechanical properties. The material has potential applications.

Description

technical field [0001] The invention relates to a polyester material, in particular to a photochromic ternary copolyester and its preparation method and application, belonging to the technical field of polymer materials. Background technique [0002] Photochromic materials refer to a class of materials that change the molecular structure of the material accompanied by a color change under the stimulation of a light source of a specific wavelength, and can be restored under the action of heat or light. In the 1960s, Corning Corporation of the United States first discovered and produced the first photochromic material. After decades of development, the types, application ranges and performance of this type of material have been continuously enriched and improved. At present, photochromic materials have been widely used in various fields such as decoration, protective packaging, smart windows, optical devices, information storage components, and self-image holographic recording...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/685C09K9/02G03C1/00
CPCC08G63/6856C09K9/02C09K2211/1425G03C1/00
Inventor 刘小青曹丽军江艳华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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