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Photochromic ternary copolyester as well as preparation method and application thereof

A ternary copolyester, photochromic technology, used in color-changing fluorescent materials, chemical instruments and methods, optics, etc. The effect of sustainable development, easy control and high production efficiency

Active Publication Date: 2020-11-17
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Photochromic ternary copolyester as well as preparation method and application thereof
  • Photochromic ternary copolyester as well as preparation method and application thereof
  • Photochromic ternary copolyester as well as preparation method and application thereof

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preparation example Construction

[0062] 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.

[0063] 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.

[0064] 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.

[0065] Further, the preparation method of the p...

Embodiment 1

[0103] Mix azobenzenediol (Formula 3), succinic acid, and decanediol (the second fatty diol) in a molar ratio of 0.01:1:0.99, and then add the catalyst (tetrabutyl titanate, based on butyl Diacid is 0.2mol%) and catalyst (antimony trioxide, based on succinic acid is 0.1mol%), join in the reactor, under nitrogen protection condition, be heated up to 160 ℃, react 6h, vacuum degree is 60Pa, heat up 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.

[0104]

[0105] 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 follows figure 2 shown. image 3 It shows the photochromic response times of the photochromic ternary copolyester prepared in thi...

Embodiment 2

[0107] Mix azobenzenediol (Formula 3), adipic acid, and decanediol (the second aliphatic diol) in a molar ratio of 0.05:1:0.95, and then add the catalyst (tetrabutyl titanate, based on hexyl Diacid is 5mol%) and catalyst (antimony trioxide, based on adipic acid is 5mol%), join in the reactor, under nitrogen protection condition, heat up to 210 ℃, react 2h, vacuum degree is 60Pa, heat up 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.

[0108]

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Abstract

The invention discloses photochromic ternary copolyester as well as a preparation method and application thereof. The photochromic ternary copolyester has a structure shown in the specification, wherein Rm and Rn are selected from H, F, Cl, Br, I, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, nitro, methoxyl and the like, m is an integer from 1 to 4, n is an integer from 5 to 8, Ra is a residue of aliphatic dibasic acid, Rb is a residue of aliphatic dibasic alcohol, p is 20 to 200, q is 20 to 200, and x is an integer from 2 to 10. The preparation method comprises the following steps: copolymerizing the aliphatic dibasic acid compound or an ester thereof with an azobenzene compound and other dihydric alcohols to prepare the photochromic ternary copolyester. The photochromic response speed of the photochromic ternary copolyester is less than 20 seconds, and the photochromic ternary copolyester has good biodegradability and mechanical properties, and has potential application significance in promoting the development of thermoplastic polyester functionalization in information storage elements and self-developing holographic recording photographic materials.

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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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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