Title:
METHOD FOR SELECTING ESTER FUNCTIONAL GROUP-CONTAINING POLYMERS FROM MIXTURE OF ESTER FUNCTIONAL GROUP-CONTAINING POLYMERS AND OTHER TYPES OF POLYMERS
Document Type and Number:
WIPO Patent Application WO/2023/195794
Kind Code:
A1
Abstract:
The present invention relates to a method for selecting ester functional group-containing polymers from a polymer mixture of the ester functional group-containing polymers and other types of polymers, and more particularly, to a method wherein foreign substances that only exhibit color in the ester functional group-containing polymers are removed from the polymer mixture by using an extracting agent for extracting the foreign substances and decolorized, and then the decolorized polymers are selectively separated by using the color difference with the other non-decolorized polymers.
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Inventors:
CHO JOUNGMO (KR)
JO YE RIM (KR)
LE THI HONG NGAN (KR)
LEE JONG YONG (KR)
JO YE RIM (KR)
LE THI HONG NGAN (KR)
LEE JONG YONG (KR)
Application Number:
PCT/KR2023/004653
Publication Date:
October 12, 2023
Filing Date:
April 06, 2023
Export Citation:
Assignee:
KOREA RES INST CHEMICAL TECH (KR)
RE NEW SYSTEM CO LTD (KR)
RE NEW SYSTEM CO LTD (KR)
International Classes:
C08J11/02; G01N21/78; G01N31/22; G01N33/44
Foreign References:
| JP2020100842A | 2020-07-02 | |||
| CN107687632A | 2018-02-13 | |||
| CN113508153A | 2021-10-15 | |||
| KR20220037999A | 2022-03-25 | |||
| US20200190280A1 | 2020-06-18 | |||
| KR102418787B1 | 2022-07-11 |
Attorney, Agent or Firm:
GHONG-GAN INTERNATIONAL PATENT LAW FIRM (KR)
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