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Method for preparing crude diisooctyl terephthalate by cracking polyester waste textiles

A technology of diisooctyl phthalate and ethylene glycol phthalate is applied in the field of polyester waste spinning and cracking to prepare crude diisooctyl terephthalate, which can solve the second pollution of waste of land resources, landfill or Incineration, can not be directly reprocessed, etc.

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 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 iso-octanol is added for esterification to become crude diisooctyl 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, 1.3 times the proportion of isooctyl alcohol was added to the crude ethylene terephthalate to carry out esterification reaction, and then the ethylene glycol was exchanged and separated into crude di-octyl terephthalate.

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PUM

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Abstract

Polyester waste textiles are heated and dissolved in ethylene glycol, the obtained solution is filtered to remove dregs, and isooctyl alcohol is added to achieve esterification and exchange out the ethylene glycol in order to form crude diisooctyl terephthalate.

Description

technical field [0001] The invention discloses a method for preparing crude diisooctyl 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 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 dissolves waste polyester textiles with ethylene glycol, filters out dregs, adds isooctyl alcoh...

Claims

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Application Information

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IPC IPC(8): C07C67/03C07C69/82
CPCC07C67/03C07C67/297C07C69/82
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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