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Biodegradable polyester and preparation method thereof

A technology for degrading polyester and biology, applied in polyester coatings, chemical instruments and methods, synthetic resin layered products, etc., can solve the problems affecting the thermodynamic properties of polyester products, lower melting point, low crystallinity, etc.

Inactive Publication Date: 2014-02-12
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the irregular structure of 2,5-furandicarboxylic acid, these copolyesters have low crystallinity, with a maximum of only a dozen percent, which affects the thermodynamic properties of polyester products and greatly reduces their melting point.

Method used

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  • Biodegradable polyester and preparation method thereof
  • Biodegradable polyester and preparation method thereof
  • Biodegradable polyester and preparation method thereof

Examples

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preparation example Construction

[0108] The preparation method of biodegradable polyester of the present invention comprises the steps:

[0109] The polyester is obtained by condensation of monomer a, monomer b, monomer c and monomer d,

[0110] Monomer a is selected from aliphatic dibasic acids, aliphatic dibasic esters or mixtures thereof;

[0111] Monomer b is selected from aromatic dibasic acids, aromatic dibasic esters or mixtures thereof;

[0112] Monomer c is aliphatic dihydric alcohol;

[0113] Monomer d is selected from 2,5-furandicarboxylic acid, 2,5-furandicarboxylic acid dibasic ester or mixtures thereof;

[0114] The mass ratio of monomer a to monomer b is 4:1 to 1:4; the mass ratio of the total mass of monomer a and monomer b to monomer c is 1:1 to 1:4; the mass ratio of monomer b to monomer The mass ratio of body d is 1000:1-2:1.

[0115] The present invention also provides a method for preparing the above-mentioned copolyester, the method comprising the following steps: subjecting monomer ...

Embodiment 1

[0177] Add 73g of adipic acid, 75g of terephthalic acid, 8g of 2,5-furandicarboxylic acid, 220g of 1,4-butanediol, and 0.10g of tetra-n-butyl titanate into a 500mL three-necked flask equipped with a mechanical stirring device . After all the materials have been added, equip the flask with a condensation device, vacuumize and fill with nitrogen three times to remove the oxygen in the reaction vessel to ensure that the esterification reaction is carried out under nitrogen conditions. Heating to 225°C. After the reactants form a homogeneous system, control the reaction temperature so that the esterification reaction is stirred at 225°C for 3 hours. During this process, water is distilled from the reaction mixture as a by-product until the amount of the distillate reaches 92% of the theoretical calculation. (The theoretically calculated amount of water is twice the sum of the molar amounts of adipic acid, terephthalic acid and 2,5-furandicarboxylic acid).

[0178] 0.15 g of anti...

Embodiment 2

[0183] Add 70g dimethyl adipate, 93g dimethyl terephthalate, 22g dimethyl 2,5-furandicarboxylate, 230g 1,4-butanediol, 0.15g zinc acetate to a mechanical stirring device 500mL three-necked bottle. After all the materials have been added, equip the flask with a condensation device, vacuumize and fill with nitrogen three times to remove the oxygen in the reaction vessel to ensure that the transesterification reaction is carried out under nitrogen conditions. Heating to 205°C. After the reactants form a homogeneous system, control the reaction temperature so that the transesterification reaction is stirred at 205°C for 6 hours. During this process, methanol is distilled out from the reaction mixture as a by-product until the amount of the distillate reaches 92% of the theoretical calculation. (The theoretically calculated amount of methanol is twice the sum of the molar amounts of dimethyl adipate, dimethyl terephthalate and dimethyl 2,5-furandicarboxylate).

[0184] 0.15g of t...

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Abstract

The present invention provides a biodegradable copolyester containing 2,5-furandicarboxylate, a product thereof, a preparation method therefor and a use thereof. The polyester has irregularly repeating structural units. The aromatic-aliphatic copolyester of the present invention integrates high crystallinity and high melting point of terephthalate copolyester, biomass sources of 2,5-furandicarboxylate, and biodegradability of aliphatic polyester.

Description

technical field [0001] The invention belongs to the field of material synthesis and preparation, and in particular relates to a novel biodegradable copolyester and a preparation method thereof. Background technique [0002] In people's daily production and life, a lot of waste will be generated, and the main way to deal with these wastes is landfill. This municipal solid waste sent to landfill without proper treatment and the increasing amount of non-degradable material (a large proportion of which is plastic) in the waste stream has drastically reduced the number of available landfills and increased waste disposal costs, although some Waste can be reused, but the effect is not ideal, and the cost of recycling is too high, and most of them are directly landfilled and degraded naturally, causing serious environmental problems. [0003] Therefore, there is a need for a plastic that can be directly degraded by the environment, such as microorganisms. These plastics are especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/58C08L67/06B32B27/06B32B27/36C09D167/06
CPCC08G63/181C08G63/199
Inventor 赵冬云杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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