Method for preparing PBT raw material through chemical reduction of polyester waste fibers

A polyester waste and fiber technology, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of waste of land resources, secondary pollution, non-recyclable, non-direct reprocessing, etc.

Inactive Publication Date: 2019-08-09
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 polyester waste fibers 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 raw materials by chemical reduction of polyester waste fibers according to the present invention, first crushes waste polyester fibers 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 dregs is more finely filtered with carbon powder, and the pigment etc. in the solution are filtered out.

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PUM

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Abstract

The invention discloses a method for preparing a PBT raw material through chemical reduction of polyester waste fibers. Firstly, the polyester waste fibers are crushed into pieces of 100 mm in size, and the pieces are dissolved with butanediol heated to 220 DEG C.

Description

technical field [0001] The invention discloses a method for preparing PBT raw material by chemical reduction of polyester waste fiber in our factory. [0002] technical background [0003] As we all know, the existing polyester waste fibers can neither be reused nor directly reprocessed after recycling except for a very small amount of them being used by people using physical methods. They 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] In the invention, polyester waste fibers are heated and melted with butanediol, decolorized after f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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