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Method for preparing PBT raw material by chemical reduction of polyester clothing leftovers

A technology of leftover materials and clothing, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve problems such as landfill or incineration, inability to directly reprocess, waste of land resources, secondary pollution, 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 clothing scraps 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 garment leftovers according to the present invention, first crushes polyester garment leftovers into 100mm-sized 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 relates to a method for preparing a PBT raw material by chemical reduction of polyester clothing leftovers. The polyester clothing leftovers are heated and melted with butanediol, decolorization is carried out after filtration, purification is carried out to obtain BHBT, and a catalyst is added for polymerization to obtain PBT.

Description

technical field [0001] The invention discloses a method for preparing PBT raw materials by chemical reduction of polyester clothing scraps in our factory. [0002] technical background [0003] As we all know, the existing scraps of polyester garments can neither be reused nor directly reprocessed after recycling except that they are used in a very small amount 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 completely eliminates this backward treatment mode, completely solves the second pollution. [0005] In order to achieve the above object, the technical solution of the present invention is as follows: [0006] The invention is to heat and melt polyester clothing scraps with butanediol, decolorize af...

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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