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Polyester based on full biomass monomer, preparation method and application

A biomass and polyester technology, applied in the field of polyester synthesis, can solve the problems of difficult processing, low melting point, poor mechanical properties, etc., and achieve the effects of low cost, improved thermal properties, excellent mechanical properties and thermal properties

Active Publication Date: 2018-10-09
GUANGDONG YUESHENGRI PLASTIC SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main representative varieties of biodegradable polyesters are polylactic acid (PLA), polycaprolactone (PCL), polybutylene succinate (PBS) and polyglycolic acid (PGA). The structural units of the main chain of the ester are linked by easily hydrolyzed ester bonds, and the main chain is flexible, so it is easy to be decomposed and metabolized by various microorganisms or enzymes in animals and plants in nature, and finally form carbon dioxide and water. However, these biodegradable polymers Ester itself does not contain rigid groups, and has disadvantages such as low melting point, poor mechanical properties, and difficult processing.

Method used

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  • Polyester based on full biomass monomer, preparation method and application
  • Polyester based on full biomass monomer, preparation method and application
  • Polyester based on full biomass monomer, preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Example 1: 5.084 g (20 mmol) of 2,5-dimethoxy dimethyl terephthalate, 3.215 g (22 mmol) of isosorbide and 0.154 g (0.4 mmol) of isosorbide were sequentially added to a 50 mL single-necked flask ) diacetyl condensed o-aminophenol titanium complex, placed in a reactor at a reaction temperature of 120 ° C, and carried out a transesterification reaction for 4 hours under nitrogen protection to obtain a transesterified product; the obtained transesterified product and the catalyst were not separated, and placed in Under high vacuum at 200° C. and a pressure lower than 20 Pa, the reaction was carried out for 2 hours, then the heating was stopped, and the system was naturally cooled to room temperature by blowing nitrogen to obtain a crude polyester product. Add 40 mL of chloroform to the crude polyester, soak for 2 hours and then filter; take the clear liquid and add it dropwise to methanol to obtain a turbid system, centrifuge to obtain a precipitate, filter, then wash with 5...

Embodiment 2

[0039] Example 2: Add 5.084g (20 mmol) of 2,5-dimethoxy dimethyl terephthalate, 3.507g (24 mmol) of isosorbide and 0.171g (0.4 mmol) to a 50 mL single-necked flask ) zirconium complex of diacetyl condensate o-aminophenate, placed in a reactor with a reaction temperature of 120°C, under the protection of nitrogen, carried out a transesterification reaction for 4 hours to obtain a transesterified product; the obtained transesterified product and the catalyst were not separated, and placed in Under high vacuum at 200° C. and a pressure lower than 20 Pa, the reaction was carried out for 2 hours, then the heating was stopped, and the system was naturally cooled to room temperature by blowing nitrogen to obtain a crude polyester product. Add 40 mL of chloroform to the crude polyester, soak for 2 hours and then filter; take the clear liquid and add it dropwise to methanol to obtain a turbid system, centrifuge to obtain a precipitate, filter, then wash with 5 mL of methanol, filter and...

Embodiment 3

[0040] Example 3: Add 5.084g (20 mmol) of 2,5-dimethoxy dimethyl terephthalate, 3.780 g (26 mmol) of isosorbide and 0.061 g (0.4 mmol) in a 50 mL single-necked flask ) Zinc oxalate dihydrate, placed in a reactor at a reaction temperature of 120°C, and carried out a 4h transesterification reaction under nitrogen protection to obtain a transesterification product; the obtained transesterification product and the catalyst were not separated, and placed at 200°C and under a low pressure Under a high vacuum of 20 Pa, the reaction was carried out for 2 hours, then the heating was stopped, and the system was naturally cooled to room temperature by blowing nitrogen to obtain a crude polyester product. Add 40 mL of chloroform to the crude polyester, soak for 2 hours and then filter; take the clear solution and add it dropwise to methanol to obtain a turbid system, centrifuge to obtain a precipitate, filter, then wash with 5 mL of methanol, filter, and vacuum dry at 60 °C. 8.076 g of po...

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Abstract

The invention discloses polyester based on a full biomass monomer, a preparation method and an application, and belongs to the field of polyester synthesis. Polyester takes 2,5-dimethoxy dimethyl terephthalate with a cyclic rigid group, and isosorbitol as raw materials, obtaining an ester exchange product through a catalytical ester exchange reaction, obtaining a polyester crude product through acatalytical polycondensation reaction, and performing solvent extraction, precipitant precipitation, filtration and drying to form target polyester. Synthesized polyester has the characteristics of high molecular weight, high heat performance, good mechanical properties and the like, and the characteristic of easy degradation in a natural soil environment as biobased polylactic acid. Polyester based on the full biomass monomer is mainly applied to preparing a bottle level polyester material.

Description

technical field [0001] The invention relates to a polyester based on whole biomass monomers, a preparation method and application. It specifically relates to a kind of polyester based on all biomass monomers prepared by catalyzing condensation reaction with 2,5-dimethoxy dimethyl terephthalate and isosorbide as raw materials with cyclic rigid groups. The invention belongs to the field of polyester synthesis, and in particular relates to a polyester based on all biomass monomers, a preparation method and an application thereof. Background technique [0002] With the rapid development of the polyester industry, polyester products have been widely used in packaging, electronic appliances, medical and health care, construction, automobiles and other fields. Although polyester materials facilitate the material life of human beings, their waste after use is extremely difficult to degrade in the natural environment, resulting in serious "white pollution". Therefore, it is of grea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/672C08G63/85C08G63/86C08G63/83C08G63/87B65D65/46
CPCB65D65/466C08G63/672C08G63/83C08G63/85C08G63/866C08G63/87Y02W90/10
Inventor 程正载刘盼盼曾胜李光要胡海王涵鼎王云唐然丁玲李文兵马里奥·高斯尔
Owner GUANGDONG YUESHENGRI PLASTIC SCI & TECH CO LTD
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