Synthesis of degradable aromatic/fatty copolymer ester by in-situ ester

A kind of oligomeric lactic acid and degradability technology, applied in the field of preparation of aromatic/aliphatic copolyester

Inactive Publication Date: 2006-08-16
江西省飓风化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of these three commonly used methods is that they all use a catalyst

Method used

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  • Synthesis of degradable aromatic/fatty copolymer ester by in-situ ester
  • Synthesis of degradable aromatic/fatty copolymer ester by in-situ ester
  • Synthesis of degradable aromatic/fatty copolymer ester by in-situ ester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1.0mol terephthaloyl chloride (TPC), 1.0mol ω-hydroxy oligoethylene glycol (PEG) and 0.3mol D, L-oligomeric lactic acid solution co-condensation, diphenyl ether as solvent, according to the conventional process, maintained at 100 ° C 12h, maintained at 230°C for 4h, synthesized TPC / PEG / PLA copolyester.

Embodiment 2

[0037] 1.0mol isophthaloyl chloride (IPC), 1.0mol aliphatic dihydric alcohol (ADO) and 0.8mol D, L-oligomeric lactic acid solution polycondensation, synthetic TPC / ADO / PLA copolyester, reaction condition is the same as embodiment 1 .

Embodiment 3

[0039] 1.0mol terephthaloyl chloride (TPC), 1.0mol aliphatic diol (ADO) and 0.5mol D, L-oligomeric lactic acid bulk melt co-condensation, according to the conventional process, 100 ° C for 12 hours, 230 ° C for 4 hours, vacuum (about 10mbar) at 230°C for 4h to synthesize TPC / ADO / PLA copolyester.

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Abstract

Synthesis of degradable aromatic / fatty copolymer ester by low lactic acid in situ ester exchange is carried out by mixing AAC and DO with D, L-PLA in proportion of 1:1: (0-1.0), copoly-condensing without solvent or with diphenyl ether as solvent and synthesizing the final product.

Description

technical field [0001] The invention relates to a preparation method of aromatic / fatty copolyester, in particular to a method for synthesizing degradable aromatic / fatty copolyester by in-situ transesterification oligomeric lactic acid. Background technique: [0002] Biodegradable polyester refers to a polymer compound whose chemical structure changes under the action of specific microorganisms or in the internal environment of the human body or animal, resulting in a decrease in relative molecular weight and a change in performance. As people pay more and more attention to maintaining their own health and the surrounding living environment, biomedical materials and environmentally friendly materials have been developed rapidly, and biodegradable polyesters have shown excellent performance in these two aspects. The main chain of biodegradable polyester is composed of aliphatic structural units connected by easily hydrolyzed ester bonds. It is hydrolyzed under the promotion of...

Claims

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Application Information

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IPC IPC(8): C08G63/60
Inventor 陈义旺杨燕朱祥军贺晓慧
Owner 江西省飓风化工有限公司
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