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
View PDF1 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 waste textiles that are used by people using physical methods, they can neither be reused

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

Example Embodiment

[0008] Example 1:

[0009] The method for preparing dioctyl terephthalate by depolymerizing and purifying waste polyester textiles into purified terephthalic acid monomer + octanol esterification according to the present invention is to depolymerize waste polyester textiles in a solution The dregs are filtered clean.

Example Embodiment

[0010] Example 2:

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

Example Embodiment

[0012] Example 3:

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

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

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

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): C07C67/03C07C69/82
CPCC07C67/03C07C67/297C07C69/82
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