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Biobased polyarylester and preparation method thereof

A polyarylate, bio-based technology, applied in the field of bio-based polyarylate and its preparation, can solve the problems of high price, limited production of terephthalic acid, and industrialized production has not been realized, and achieves the effect of excellent toughness

Active Publication Date: 2012-11-28
北京雷恩新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on PAR in my country started earlier, industrialized production has not yet been realized.
[0008] Terephthalic acid (TPA for short), the main raw material for polyester production, is mainly obtained from p-xylene. Although it is the dicarboxylic acid with the largest output, it is also a chemical product that depends on petroleum resources. It is not only expensive, but also With the depletion of petroleum resources, the production of terephthalic acid will also be limited
Bisphenol A (BPA for short), which is used as a raw material for traditional PAR production, is generally produced by condensation of phenol and acetone in an acidic medium. Although it is widely used, its safety issues have gradually become the focus of public attention.

Method used

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  • Biobased polyarylester and preparation method thereof
  • Biobased polyarylester and preparation method thereof
  • Biobased polyarylester and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Esterification reaction

[0039] Add 2,5-furandicarboxylic acid and bisphenolic acid into 1,4-dioxane solvent, stir to dissolve, and preheat to 45°C to prepare a mixed solution, in which 2,5-furandicarboxylic acid , The weight ratio between bisphenolic acid and 1,4-dioxane is 10:30:60, and the molar ratio of 2,5-furandicarboxylic acid to bisphenolic acid is 1:1.56;

[0040] Send the above mixed solution into the tank-type bioreactor, then add the above-mentioned immobilized esterification enzyme, and carry out the esterification reaction under steam heating and pulse agitation, and pulse agitation for 3-5 minutes every 4-6 hours during the reaction process. And detect the acidity, stop the reaction when the acidity no longer decreases, recover the immobilized esterification enzyme, remove the solvent and water by distillation under reduced pressure, and obtain the esterification product; wherein the weight ratio of the esterification enzyme to the mixed solution is 0...

Embodiment 2

[0050] 1. Esterification reaction

[0051] Add 2,5-furandicarboxylic acid and bisphenolic acid into tetrahydrofuran solvent, stir to dissolve, and preheat to 40°C to obtain a mixed solution, in which the mixture of 2,5-furandicarboxylic acid, bisphenolic acid and tetrahydrofuran The weight ratio between them is 12:23:65, and the molar ratio of 2,5-furandicarboxylic acid to bisphenolic acid is 1:1;

[0052] Send the above mixed solution into the tank-type bioreactor, then add the above-mentioned immobilized esterification enzyme, and carry out the esterification reaction under steam heating and pulse agitation, and pulse agitation for 3-5 minutes every 4-6 hours during the reaction process. And detect the acidity, stop the reaction when the acidity no longer decreases, recover the immobilized esterase, remove the solvent and water by distillation under reduced pressure, and obtain the esterification product, wherein the weight ratio of the esterase to the mixed solution is 0.1:...

Embodiment 3

[0056] 1. Esterification reaction

[0057] Add 2,5-furandicarboxylic acid and bisphenolic acid methyl ester into acetone solvent, stir to dissolve, then preheat to 50°C to obtain a mixed solution, in which 2,5-furandicarboxylic acid, bisphenolic acid methyl The weight ratio between ester and acetone is 2:38:60, and the molar ratio of 2,5-furandicarboxylic acid to bisphenolic acid methyl ester is 1:10;

[0058] Send the above mixed solution into the tank-type bioreactor, then add lipase LS-20 for esterification, mix well and then carry out the esterification reaction under steam heating and pulse agitation, and pulse agitation every 4-6 hours during the reaction process 3-5 minutes, and check the acidity. When the acidity no longer decreases, the reaction is terminated. After the solvent and water are removed by distillation under reduced pressure, the esterification product is obtained. The weight ratio of the enzyme to the mixed solution is 2:100, and the esterification is co...

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Abstract

The invention discloses a biobased polyarylester and a preparation method thereof. The polyarylester has the structural formula shown in the specification, wherein n is not less than 120 and not more than 200, and R is H or alkyl. The preparation method of the biobased polyarylester comprises the following steps of: carrying out esterification on 2,5-furandicarboxylate and diphenolic acid or esters of diphenolic acid under the catalysis action of esterifying enzyme to prepare an esterification product; and then carrying out condensation polymerization on the esterification product under the catalysis action of polyoxometalates. The biobased polyarylester has excellent toughness, heat resistance, fire resistance, ultraviolet screening property, bend recovery, dimensional stability and creep resistance and can be widely applied to the field of mechanics, electronics, vehicles, aviation, medical treatment, foods and the like.

Description

technical field [0001] The invention relates to a thermoplastic engineering plastic, in particular to a bio-based polyarylate and a preparation method thereof. Background technique [0002] Biobased products (Biobased products) mainly refer to environmentally friendly chemical products and green energy prepared from lignocellulosic agricultural and forestry wastes such as straws other than grain. the only way. At present, bio-based products mainly include biogas, fuel ethanol, biodiesel and bioplastics. [0003] Studies have found that levulinic acid and 2,5-furandicarboxylic acid can be produced in large quantities, economically and effectively through direct hydrolysis of biomass resources such as cellulose or starch. These two platform compounds have good reactivity and can undergo various reactions such as esterification, redox, substitution, etc., and synthesize many useful compounds and even new polymer materials. The first condition for using levulinic acid in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/58
Inventor 颉二旺张维
Owner 北京雷恩新材料科技有限公司
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