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Method for preparing PBT by chemical reduction of waste PET packaging belts

A technology for packing tapes and wastes, which is applied in the field of chemical reduction to prepare PBT raw materials, can solve the problems of inability to directly reprocess, waste of land resources, secondary pollution, and inability to reuse.

Inactive Publication Date: 2019-09-06
PLASTIC UNION NEW MATERIAL TECH HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After recycling, it can neither be reused nor directly reprocessed. It can only be landfilled 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] The method for preparing PBT raw materials by chemical reduction of waste PET packing tapes according to the present invention first crushes the sorted waste PET packing tapes into small pieces, 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 in the solution is filtered out.

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PUM

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Abstract

The invention discloses a method for preparing PBT by chemical reduction of waste PET packaging belts. After the waste PET packaging belts are heated and molten with butanediol, filtration is performed, then decolorization and purification are performed, 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 using chemical reduction of waste PET packing belts in our factory. [0002] technical background [0003] As we all know, the existing PET strapping waste is generally utilized by people using physical regeneration and granulation. After recycling, it can neither be reused nor directly reprocessed. It can only be landfilled 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 present invention heats and melts the waste PET strap material with butanediol, decolorizes and puri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183
CPCC08G63/183
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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