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.

Inactive Publication Date: 2019-08-23
PLASTIC UNION NEW MATERIAL TECH HUBEI
View PDF0 Cites 0 Cited by
  • 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, which is used by people through physical regeneration methods, it can neither be r

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method for preparing PBT raw material by chemical reduction of PET waste according to the present invention, first crushes the sorted PET waste 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.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08G63/183C07C67/03C07C69/82
CPCC07C67/03C08G63/183C07C69/82
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap