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Method used for reduction preparation of PBT raw material from PET waste sheet materials

A chemical and raw material technology, applied in the field of chemical reduction to prepare PBT raw materials, can solve the problems of non-recyclable, non-direct reprocessing, waste of land resources and second pollution

Inactive Publication Date: 2019-08-06
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 PET waste flakes that are used by people through physical regeneration and granulation, they can neither be reused nor directly reprocessed after recycling, and can only be used as landfill or incineration.
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 PET waste flakes according to the present invention firstly crushes the sorted PET waste flakes 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 etc. in the solution are filtered out.

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PUM

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Abstract

The invention discloses a method used for reduction preparation of PBT raw material from PET waste sheet materials. According to the method, PET waste sheet material is subjected to heating dissolvingwith butylene glycol, and filtering, decolouring, purifying, and catalyst adding polymerization are carried out so as to obtain PBT.

Description

technical field [0001] The invention discloses a method for preparing PBT raw materials by chemical reduction using PET waste flakes in our factory. [0002] technical background [0003] As we all know, except for a very small amount of existing PET waste flakes that are used by people through physical regeneration and granulation, they can neither be reused nor directly reprocessed after recycling, and 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 PET waste flakes with butanediol, decolorizes and puri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08G63/78C08J11/24C08L67/02
CPCC08G63/183C08G63/78C08J11/24C08J2367/02Y02W30/62
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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