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Method for preparing PBT through chemical reduction of waste dacron textiles

A biochemical and textile technology, applied in the field of chemical reduction of polyester waste textiles to prepare PBT, can solve the problems of landfill or incineration, inability to directly reprocess, waste of land resources, and secondary pollution

Inactive Publication Date: 2019-08-13
PLASTIC UNION NEW MATERIAL TECH HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, except for a very small amount of existing waste textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be used as landfills or incinerated.
Not only waste land resources but also cause secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method for preparing PBT by chemical reduction of polyester waste and old textiles according to the present invention, first crushes polyester waste and old textiles into 100mm fragments, and melts them with butanediol heated at 220°C.

Embodiment 2

[0011] On the basis of Example 1, the dregs in the dissolved liquid were filtered clean.

Embodiment 3

[0013] On the basis of Example 2, the solution obtained by filtering the scum was finely filtered with carbon powder to remove the pigment in the solution.

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PUM

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Abstract

The invention relates to a method for preparing PBT through chemical reduction of waste dacron textiles. The method comprises the steps of heating and dissolving the waste dacron textiles with butanediol, performing filtering and decolorizing, then conducting purification to obtain BHBT, and adding a catalyst to polymerize PBT.

Description

technical field [0001] The invention discloses a method for preparing PBT by chemical reduction of polyester waste textiles. [0002] technical background [0003] As we all know, except for a very small amount of existing waste textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be used as landfills or incinerated. Not only wasting land resources but also causing secondary pollution. Contents of the invention [0004] The purpose of the present invention is in order to overcome the defective of above-mentioned background technology, fundamentally eliminate this backward processing way completely, completely solve the secondary pollution. [0005] In order to achieve the above object, the technical solution of the present invention is as follows: [0006] The present invention heats and melts polyester waste textiles with butanediol, decolorizes them after filtration, purifies them into...

Claims

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Application Information

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IPC IPC(8): C07C67/297C07C69/82C08G63/183
CPCC07C67/297C08G63/183C07C69/82
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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