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Biomass polyester P based on homovanillic acid as well as preparation and application thereof

A high vanillic acid and biomass technology, which is applied in identification devices, instruments, optical components, etc., can solve the problems of poor polyester tensile properties, poor transparency, dark color, etc. The effect of improving membrane performance

Active Publication Date: 2021-10-08
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, PEE, which has not yet been industrialized, has great potential to replace PET, but the thermal stability of its monomer FDCA restricts its processing and synthesis [2] ([2] Li Libo, Su Kunmei, Li Zhenhuan .Research progress on furan-based polymers[J].Petrochemical Industry, 2017,46(08):1080-1088.), and the polyester synthesized by esterification and polycondensation method using 2,5-furandicarboxylic acid as raw material, The transparency is poor and the color is dark, and the tensile properties of the obtained polyester are poor, and thinner films cannot be prepared, which limits its industrial application

Method used

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  • Biomass polyester P based on homovanillic acid as well as preparation and application thereof
  • Biomass polyester P based on homovanillic acid as well as preparation and application thereof
  • Biomass polyester P based on homovanillic acid as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Synthesis of a diol monomer M1: at room temperature, N 2 Under protection, 9.00 g (0.04 mol) of 4-(5-(hydroxymethyl)-5-methyl-1,3-dioxane)-2-methoxy with CAS number 1089332-89-7 Phenol and 6.90g (0.08mol) of ethylene carbonate were put into the reaction vessel, 100ml of N,N-dimethylformamide (DMF) was added and stirred to dissolve, and 1.83g (0.01mol) of potassium carbonate was added as a catalyst, at 160 The reaction was stirred at °C for 3 hours, and cooled to room temperature after the reaction was completed. Then add 50.0ml (0.10mol / L) of sodium hydroxide solution to it under stirring, precipitate white insoluble matter, filter, wash the filter residue twice with 200mL distilled water, and then dry the filter residue in an oven at 50°C for 1~2h to obtain A diol monomer M1 is , and the yield was 86.00%.

Embodiment 2

[0039] Synthesis of a dibasic acid monomer M2: 1.82g (0.01mol) of homovanillic acid and 50ml of acetonitrile were placed in the reactor, and 2.31g (0.01mol) of 2,2'-dibromodiethyl ether was slowly added under stirring Add it into the reaction vessel, stir and react at 110°C for 5 hours, stop heating, then add 500ml of cold distilled water to the reaction mixture, precipitate insoluble matter, filter, wash the filter residue with distilled water 3 times, filter again, put the filter residue in an oven at 60°C dry in medium for 2~3h to obtain a dibasic acid monomer M2 that is , the yield is 85.00%.

Embodiment 3

[0041] Replace the air in the reaction system with nitrogen, and under the protection of nitrogen, put 3.14g (0.01mol) of dibasic alcohol monomer M1 and 4.34g (0.01mol) of dibasic acid monomer M2 into the reaction vessel in turn, and Add 0.006g germanium dioxide, stir and react at 160°C for 5 hours, then control the vacuum degree of the reaction system at 80Pa, heat the reaction mixture to 210°C within 1h, continue to stir and react for 3.0 hours, cool the reaction mixture under nitrogen atmosphere, and then Add chloroform to the reaction mixture to dissolve, filter, add enough methanol to the filtrate until the precipitation no longer increases, filter, wash the obtained filter residue with cold methanol for 3 times, filter again, and then dry it in an oven at 75°C for 3 Hours, polyester P1 was obtained with a number average molecular weight of 54000 g / mol and a yield of 85.53%.

[0042] Preparation of highly transparent protective film for display panels: mix 100g of polyest...

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Abstract

The invention discloses biomass polyester based on homovanillic acid as well as a preparation method and application of the biomass polyester based on homovanillic acid. The method comprises the following steps: subjecting 4-(5-(hydroxymethyl)-5-methyl-1,3-dioxane-2-yl)-2-methoxyphenol to hydroxyethylation via ethylene carbonate to obtain a biomass dihydric alcohol monomer M1; coupling homovanillic acid and di(2-bromoethyl)ether to obtain a biomass binary acid monomer M2; and subjecting the biomass dihydric alcohol M1 and the biomass dibasic acid M2 to esterification and condensation polymerization to obtain a crude polymer product, and carrying out refining to obtain the homovanillic acid-based biomass polyester which can be used for preparing a main raw material of a display protection film. According to the invention, a reaction process is green and environment-friendly, and the produced biomass polyester has the characteristics of excellent thermal property, mechanical property, good degradation property and the like.

Description

technical field [0001] The invention belongs to the field of polymer synthesis. It specifically relates to the structure and preparation of a homovanillic acid-based biomass polyester P, and the prepared biomass polyester can be used as a substrate for a protective film of a display panel. Background technique [0002] With the rapid development of economy and technology, people pay more attention to the balance of ecological environment and the sustainable development of resources while focusing on improving their living standards. The "Plastic Restriction Order" promulgated and implemented in response to "white pollution" has achieved remarkable early results. The use of plastic shopping bags in supermarkets and shopping malls has generally been reduced by more than two-thirds, and the cumulative reduction of plastic shopping bags is about 1.4 million tons, which is equivalent to saving 8.4 million yuan. 10,000 tons of oil, saving more than 12 million tons of standard coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/85C08G63/84C08J5/18C08L67/02C08K3/36G09F9/30G02B1/14
CPCC08G63/672C08G63/863C08G63/84C08J5/18G09F9/30G02B1/14C08J2367/02C08K3/36
Inventor 程正载贾如艳孙欣王欢蔡拴普王林枫杨迎澳马里奥·高迪尔
Owner WUHAN UNIV OF SCI & TECH
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