Biodegradable poly(butylene succinate-co-butylene fumarate) and preparation method thereof

A technology of butylene fumarate and polysuccinic acid, which is applied in the field of polymer materials, can solve the problems of high crystallinity of PBS, complex reaction conditions, high melting temperature, etc., and achieves improved machining performance and simple post-processing. , the effect of high melting temperature

Active Publication Date: 2013-05-29
ANHUI XUELANG BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reaction conditions are complex, the esterification reaction takes 24 hours, the time is very long, and the solvent is toluene with strong toxicity
[0008] On the basis of the above-mentioned literature reports, in order to realize the industrialization of PBS and solve the problems such as high crystallinity of PBS and poor mechanical properties, the inventor combines industrial continuous production with maleic anhydride and 1,4-butanediol As a raw material, polybutylene succinate fumarate with higher intrinsic viscosity, higher melting temperature and lower crystallinity was synthesized. The polyester has good biodegradability and can be used as a general-purpose plastic. Replace the current traditional plastic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In a 500ml three-necked flask, the molar ratio of maleic anhydride to 1,4-butanediol is 1:1.05-1:1.5, the catalyst zirconium acetylacetonate 500ppm is charged, equipped with mechanical stirring, water separator, condenser, and nitrogen is introduced Protect, esterification reaction at 160℃ for 2-6h, transfer to autoclave, heat up to 130℃, catalyst is palladium on carbon, dosage 2%, pressure 4.0MPa, hydrogenation reaction for 3-6h, get product remove catalyst, add The fumaryl chloride is subjected to double bond inversion, and the resulting product is placed in a three-necked flask with a vacuum degree of 0.5 mmHg, a temperature of 250° C., and a polycondensation reaction for 2-6 hours. The intrinsic viscosity of the product is 0.80 dL / g.

Embodiment 2

[0038] In a 500ml three-necked flask, the molar ratio of maleic anhydride to 1,4-butanediol is 1:1.1, the catalyst zirconium acetylacetonate 500ppm is charged, equipped with mechanical stirring, water separator, condenser, and nitrogen protection, 130℃ Esterification reaction at -160℃ for 2-6h, transfer to autoclave, heat up to 130℃, catalyst is Raney nickel, dosage 5%, pressure 4.0MPa, hydrogenation reaction for 3-6h, get product remove catalyst, add The fumaryl chloride is subjected to double bond inversion, and the resulting product is placed in a three-necked flask with a vacuum degree of 0.5 mmHg, a temperature of 250° C., and a polycondensation reaction for 2-6 hours.

Embodiment 3

[0040] In a 500ml three-necked flask, the molar ratio of maleic anhydride to 1,4-butanediol is 1:1.1, the catalyst zirconium acetylacetonate 500ppm is charged, equipped with mechanical stirring, water separator, condenser, and nitrogen protection, 160℃ Lower esterification reaction for 6h, transfer to high pressure reactor, heat up to 110-150℃, catalyst is palladium on carbon, dosage 2%, pressure 4.0MPa, hydrogenation reaction for 3-6h, get product remove catalyst, add fumaryl chloride to proceed The double bond is reversed, and the resulting product is placed in a three-necked flask with a vacuum degree of 0.5 mmHg, a temperature of 250° C., and a polycondensation reaction for 2-6 hours.

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Abstract

The invention discloses biodegradable poly(butylene succinate-co-butylene fumarate) and a preparation method thereof. Maleic anhydride and 1,4-butanediol are taken as monomers, and esterification, hydrogenation, isomerization and melt phase polycondensation are carried out to obtain the poly(butylene succinate-co-butylene fumarate), wherein intrinsic viscosity of the poly(butylene succinate-co-butylene fumarate) product is 0.8dL / g, and the poly(butylene succinate-co-butylene fumarate) has good biodegradability, a higher melting temperature and lower crystallinity and can serve as general-purpose plastics and replace the traditional non-biodegradable plastics. The preparation method and aftertreatment of the biodegradable poly(butylene succinate-co-butylene fumarate) disclosed by the invention are simple, raw materials are available, operation is easy, and industrialized production can be realized.

Description

Technical field [0001] The invention relates to a biodegradable polybutylene succinate fumarate and a preparation method thereof, and belongs to the technical field of polymer materials. Background technique [0002] Although traditional plastics have brought great convenience to human life, because they are difficult to degrade, they have caused a series of environmental problems such as the current "white pollution", which seriously restricts the sustainable development of the economy. Therefore, the development of biodegradable plastics that can be biodegraded to replace traditional plastics is of great significance to current environmental problems and sustainable development. [0003] Aliphatic polyester has become a hot spot in the research and development of degradable plastics due to its good biodegradability. At present, aliphatic polyesters that have been studied more mainly include polylactic acid (PLA), poly(ε-caprolactone) (PCL) and polyhydroxybutyrate (PHB). Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G63/78C08G63/85C08G63/84C08G63/86C08L67/02
Inventor 李云政陈魁张磊万玉青
Owner ANHUI XUELANG BIOTECHNOLOGY CO LTD
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