Method for preparing PBT raw material through chemical reduction of PET wastes

A waste and chemical technology, applied in the field of chemical reduction to prepare PBT raw materials, can solve problems such as inability to directly reprocess, waste of land resources, secondary pollution, landfill or incineration, etc.
CN110156969AInactive Publication Date: 2019-08-23PLASTIC UNION NEW MATERIAL TECH HUBEI
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
PLASTIC UNION NEW MATERIAL TECH HUBEI
Publication Date
2019-08-23
Estimated Expiration
Not applicable Β· inactive patent
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Abstract

The invention relates to a method for preparing a PBT raw material through chemical reduction of PET wastes. The method comprises the steps of dissolving the PET wastes with butylene glycol through heating, then, carrying out filtering, then, carrying out decoloring, carrying out purifying to obtain BHBT, and adding a catalyst to synthesize PBT.
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Description

technical field

[0001] The invention discloses a method for preparing PBT raw material by chemical reduction of PET waste in our factory.

[0002] technical background

[0003] As we all know, the existing PET waste can neither be reused nor directly reprocessed after recycling except for a very small amount of it being used by people through physical regeneration. It can only be used as landfill 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] In the invention, PET waste is heated and melted with butanediol, decolorized after filtration, purified into BHBT, and pol...

Claims

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