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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0008] Example 1:

[0009] The waste polyester textiles of the present invention are heated and dissolved with ethylene glycol, the residue is filtered out, and then esterified with isooctyl alcohol to become crude dioctyl terephthalate. The method is to use ethylene glycol for waste polyester textiles. The glycol is heated to about 200°C and soaked for 2 hours to dissolve.

Example Embodiment

[0010] Example 2:

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

Example Embodiment

[0012] Example 3:

[0013] On the basis of Example 2, 1.3 times the ratio of isooctyl alcohol was added to crude ethylene terephthalate for esterification, and then the ethylene glycol was exchanged and separated into crude ethylene 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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