Production method of polycaprolactone

A polycaprolactone and production method technology, applied in the field of polymer materials, can solve the problems of unfavorable environmental protection and construction safety, high energy consumption, high production cost, etc., and achieve low production cost, low cost and low risk of reaction Effect

Active Publication Date: 2022-02-15
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention is to provide a production method of polycaprolactone, which is used to solve the technical problem that the raw materials used in the current production method of polycaprolactone include two catalysts, there are many production raw materials and there is a risk of environmental pollution, and When using a catalyst, it needs to be carried out in a high-temperature environment, and the production requires a lot of energy consumption, especially the high-temperature operation is not conducive to environmental protection and construction safety, and the technical problems of high production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh 300g of methyl 6-hydroxyhexanoate and 1.5g of stannous octoate into the reaction kettle, start stirring, replace nitrogen until the oxygen content is less than 0.3%, heat up to 100°C for 3 hours, turn on the vacuum pump to vacuum to -0.099MPa, and heat up to React at 180°C for 10 hours. After the molecular weight analysis is qualified, cool down to 80°C and discharge to obtain polycaprolactone with a molecular weight greater than 60,000.

Embodiment 2

[0033] Weigh 300g of ethyl 6-hydroxyhexanoate and 1.4g of stannous octoate into the reaction kettle, start stirring, replace nitrogen until the oxygen content is less than 0.3%, raise the temperature to 100°C for 3 hours, turn on the vacuum pump to evacuate to -0.099MPa, and raise the temperature to React at 180°C for 10 hours. After the molecular weight analysis is qualified, cool down to 80°C and discharge to obtain polycaprolactone with a molecular weight greater than 60,000.

Embodiment 3

[0035] Weigh 300g of n-propyl 6-hydroxyhexanoate and 1.3g of stannous octoate into the reaction kettle, start stirring, replace nitrogen until the oxygen content is less than 0.3%, raise the temperature to 100°C for 3 hours, turn on the vacuum pump to evacuate to -0.099MPa, and raise the temperature to 180°C, react for 10 hours, and after analyzing the molecular weight as qualified, lower the temperature to 80°C and discharge to obtain polycaprolactone with a molecular weight greater than 60,000.

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PUM

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Abstract

The invention discloses a production method of polycaprolactone. The production method comprises the following steps: carrying out polycondensation on 6-hydroxy hexanoate or an oligomer of 6-hydroxy hexanoate in a polycondensation temperature range and a polycondensation pressure range in the presence of a catalyst, and carrying out polycondensation for a certain time according to molecular weight requirements to prepare polycaprolactone with different molecular weights. Polycaprolactone can be obtained by direct polymerization of 6-hydroxy hexanoate or 6-hydroxy hexanoate oligomer with a catalyst, the process is simple, the cost is low, the compatibility of the product with degradable materials such as PBS, PBAT and PBT is good, the product can be widely applied to degradable solvents or additives of various biodegradable materials, the production cost is low, the polycondensation temperature range is 150-200 DEG C, the reaction temperature is low, and the whole reaction is low in risk, environment-friendly and pollution-free.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a production method of polycaprolactone. Background technique [0002] Polycaprolactone (Polycaprolactone, PCL), also known as polyε-caprolactone, is a high molecular organic polymer formed by ring-opening polymerization of ε-caprolactone monomer under the catalysis of a metal anion complex catalyst. conditions, different molecular weights can be obtained. Its appearance is white solid powder, non-toxic, insoluble in water, soluble in many polar organic solvents. PCL has good biocompatibility, good organic polymer compatibility, and good biodegradability. It can be used as a cell growth support material and is compatible with a variety of conventional plastics. 6-12 in the natural environment Months can be completely degraded. In addition, PCL also has good shape memory temperature control properties, and is widely used in the production and processing of drug carrie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/85
CPCC08G63/08C08G63/823
Inventor 谢传欣吴浩天
Owner QINGDAO UNIV OF SCI & TECH
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