Method for preparing dioctyl terephthalate by depolymerizing and purifying waste polyester textiles and adding octanol

A technology of dioctyl terephthalate and waste textiles, which is applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc. Secondary pollution and other issues

Inactive Publication Date: 2019-11-08
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] A method of preparing dioctyl terephthalate through depolymerization and purification of polyester waste textiles according to the present invention into purified terephthalic acid monomer + octanol esterification is to depolymerize polyester waste textiles into a solution The dross is filtered clean.

Embodiment 2

[0011] On the basis of Example 1, the solution after depolymerization and filtration of polyester waste textiles was distilled and purified to become purified terephthalic acid monomer.

Embodiment 3

[0013] On the basis of Example 2, a certain proportion of octanol was added to purified terephthalic acid for esterification to become dioctyl terephthalate.

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PUM

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Abstract

According to the invention, waste terylene textiles are depolymerized, distilling purification is carried out to obtain purified terephthalic acid monomers, and octanol is added for esterification, sothat dioctyl terephthalate is obtained.

Description

technical field [0001] The invention discloses a method for preparing dioctyl terephthalate through depolymerization and purification of polyester waste textiles and octanol. [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 invention is to depolymerize and distill waste polyester waste textiles into purified ...

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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