Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of biodegradable polybutylene succinate fumarate and preparation method thereof

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

Active Publication Date: 2016-03-23
ANHUI XUELANG BIOTECHNOLOGY CO LTD
View PDF8 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

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, and the catalyst zirconium acetylacetonate is 500ppm, equipped with mechanical stirring, water separator, and condenser, and nitrogen gas Protection, esterification reaction at 160°C for 2-6h, transfer to a high-pressure reactor, heat up to 130°C, catalyst is palladium carbon, dosage 2%, pressure 4.0MPa, hydrogenation reaction 3-6h, remove the catalyst to obtain the product, add Fumaryl chloride undergoes double bond inversion, and the resulting product is polycondensed in a three-necked flask with a vacuum of 0.5 mmHg and a temperature of 250°C for 2-6 hours, and the intrinsic viscosity of the product is 0.80 dL / g.

Embodiment 2

[0038] In a 500ml three-neck flask, the molar ratio of maleic anhydride to 1,4-butanediol is 1:1.1, and the catalyst zirconium acetylacetonate is 500ppm, equipped with a mechanical stirrer, a water separator, and a condenser, and nitrogen protection, at 130°C Esterification reaction at -160°C for 2-6h, transfer to a high-pressure reactor, heat up to 130°C, the catalyst is Raney nickel, the dosage is 5%, the pressure is 4.0MPa, the hydrogenation reaction is 3-6h, the product is removed and the catalyst is added. Fumaryl chloride undergoes double bond inversion, and the resulting product is polycondensed in a three-necked flask with a vacuum of 0.5mmHg and a temperature of 250°C for 2-6h.

Embodiment 3

[0040] In a 500ml three-necked flask, the molar ratio of maleic anhydride to 1,4-butanediol is 1:1.1, and the catalyst zirconium acetylacetonate is 500ppm, equipped with a mechanical stirrer, a water separator, and a condenser, and nitrogen protection is introduced, and the temperature is 160°C Under the esterification reaction for 6 hours, transfer to a high-pressure reactor, heat up to 110-150 ° C, the catalyst is palladium carbon, the dosage is 2%, the pressure is 4.0 MPa, the hydrogenation reaction is 3-6 hours, and the catalyst is removed to obtain the product, and fumaryl chloride is added. The double bond is reversed, and the product obtained is in a three-necked flask with a vacuum of 0.5mmHg and a temperature of 250°C for 2-6 hours of polycondensation.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
Login to View More

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 biodegradable polybutylene succinate fumarate and a preparation method thereof, belonging 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 "white pollution" and seriously restricted the sustainable development of the economy. Therefore, the development of biodegradable plastics that can be degraded by organisms to replace traditional plastics is of great significance to current environmental problems and sustainable development. [0003] Aliphatic polyester has become a hotspot in the research and development of degradable plastics due to its good biodegradability. At present, the aliphatic polyesters that have been studied more mainly include polylactic acid (PLA), poly(ε-caprolactone) (PCL) and polyhydroxybutyrate (PHB). Among...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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