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Preparation method of poly (butylene succinate-co-butylene adipate)

A technology of dioic acid butylene glycol ester and polysuccinic acid, which is applied in the field of polymer material synthesis, can solve the problems of high corrosiveness of polymerized monomers, many small molecules of by-products, and reduced production costs, so as to reduce product costs, Good thermal and mechanical properties, and the effect of improving product yield

Inactive Publication Date: 2017-02-01
ANQING HE XING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of preparation method of polybutylene succinate coadipate, this preparation method not only overcomes the problem of high corrosion of polymerized monomers in the prior art, but also overcomes the problem of small by-products in the prior art. The problem of many molecules and low yield can effectively reduce the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 45g of succinic anhydride, 7.5g of adipic acid, 50g of 1,4 butanediol, and 0.2ml of tetrabutyl titanate into a three-necked flask equipped with heating, stirring, and temperature controllers, and stir to raise the temperature under a nitrogen atmosphere. Under normal pressure, control the reaction temperature at 160°C and react for 1.5 hours; add 0.4ml of liquid titanium catalyst, control the vacuum to 300Pa absolute pressure, and continue the reaction for 1 hour at the reaction temperature of 260°C to obtain polysuccinic acid co-butylene adipate Glycol ester products.

Embodiment 2

[0024] Add 45g of succinic anhydride, 7.5g of adipic acid, 54g of 1,4 butanediol, and 0.2ml of tetrabutyl titanate into a three-necked flask equipped with heating, stirring, and temperature controllers, and stir to raise the temperature under a nitrogen atmosphere. Control the reaction temperature at 160°C under normal pressure, react for 1.5 hours; add 0.4ml of liquid titanium catalyst, then raise the temperature, control the vacuum to 300Pa absolute pressure, and continue the reaction at 260°C for 1 hour to obtain polysuccinic acid co- Butylene adipate product.

Embodiment 3

[0026] Add 40g of succinic anhydride, 15g of adipic acid, 50g of 1,4 butanediol, and 0.2ml of tetrabutyl titanate into a three-necked flask equipped with heating, stirring, and temperature controllers, and stir to raise the temperature under a nitrogen atmosphere. Press down to control the reaction temperature at 160°C, and react for 1.5 hours; add 0.4ml of liquid titanium-based catalyst, then raise the temperature, control the vacuum to 300Pa absolute pressure, and the reaction temperature is 260°C, and continue the reaction for 1 hour to obtain polysuccinic acid cohexyl Butylene glycol diacid products.

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Abstract

The invention discloses a preparation method of poly (butylene succinate-co-butylene adipate). The preparation method comprises the following steps of adopting polymerized monomer butanedioic anhydride, adipic acid and 1,4 butanediol as reaction raw materials, mixing and putting into a reaction kettle; adding a catalyst; carrying out ring-opening polymerization for 1 to 5h at the temperature of 160 to 240 DEG C under the protection of inert gas; then adding a liquid-state titanic catalyst and stirring; carrying out condensation polymerization for 1 to 6h under the conditions of the vacuum degree being 30 to 300Pa and the reaction temperature being 200 to 280 DEG C, and obtaining the product poly (butylene succinate-co-butylene adipate). The preparation method not only solves the problem of high corrosivity of a polymerized monomer in the prior art, but also solves the problems of more micromolecules and lower yield of by-products in the prior art, so that the production cost is effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer material synthesis, and in particular relates to a preparation method of polybutylene succinate coadipate. Background technique [0002] Polybutylene succinate coadipate is an important polymer material, especially as a biodegradable material, which is easily decomposed and metabolized by various microorganisms in nature or enzymes in animals and plants; at the same time, it has good Mechanical properties and thermal properties are one of the effective ways to fundamentally solve the problem of white pollution, and are widely used in packaging, tableware, medical supplies, agricultural films, slow-release materials, and biomedical materials. At present, the preparation of polybutylene succinate coadipate is mainly produced by the two-step method of esterification and polymerization using succinic acid, adipic acid and 1,4 butanediol, and there are small molecular by-products in this production met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/16C08G63/85
CPCC08G63/16C08G63/85
Inventor 马云鲍月刚
Owner ANQING HE XING CHEM
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