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Method for preparing crude diisobutyl terephthalate by pyrolysis of polyester waste textiles

A technology of diisobutyl phthalate and ethylene glycol phthalate, which is applied in the field of pyrolysis of polyester waste spinning to prepare crude diisobutyl terephthalate, which can solve the problem of landfill or incineration, which cannot be directly reprocessed, and waste Issues such as the second pollution of land resources

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

[0003] As we all know, except for a very small amount of existing waste textiles 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] The polyester waste and old textiles described in the present invention are heated and dissolved with ethylene glycol, the dregs are filtered out, and isobutanol is added for esterification to become crude diisobutyl terephthalate. Diol is heated to about 200°C and soaked for 2 hours to dissolve.

Embodiment 2

[0011] On the basis of Example 1, polyester waste textiles were melted and filtered to become crude ethylene terephthalate.

Embodiment 3

[0013] On the basis of Example 2, a 1.3-fold ratio of isobutanol was added to the crude ethylene terephthalate for esterification, and then the ethylene glycol was exchanged and separated into crude diisobutyl terephthalate.

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PUM

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Abstract

The invention discloses a method for preparing crude diisobutyl terephthalate by pyrolysis of polyester waste textiles. The polyester waste textiles are dissolved by ethylene glycol through heating, dregs are filtered out, isobutanol is added for esterification, and the ethylene glycol is exchanged to form the crude diisobutyl terephthalate.

Description

technical field [0001] The invention discloses a method for preparing crude diisobutyl terephthalate by cracking polyester waste textiles. [0002] technical background [0003] As we all know, except for a very small amount of existing waste textiles that are used by people using physical methods, 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 eliminate this backward processing way completely, completely solve the secondary 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 dissolves waste polyester textiles with ethylene glycol, filters out dregs, adds isobutanol fo...

Claims

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Application Information

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IPC IPC(8): C07C67/03C07C69/82
CPCC07C67/03C07C69/82
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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