Title:
METHOD FOR SEPARATING ORGANIC ZINC CATALYST USING FILTRATION MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2020/130686
Kind Code:
A1
Abstract:
The present invention relates to a method for separating an organic zinc catalyst dispersed in a solution by filtering a polyalkylene carbonate resin solution. When the method for separating an organic zinc catalyst according to the present invention is used, organic zinc catalyst particles can be efficiently removed from the polyalkylene carbonate resin solution, such that a transparent polyalkylene carbonate solution can be obtained in high purity.
Inventors:
MIN KYUNG MIN (KR)
KIM SUNG KYOUNG (KR)
PARK SEUNG YOUNG (KR)
SHIN SANG CHEOL (KR)
KIM SUNG KYOUNG (KR)
PARK SEUNG YOUNG (KR)
SHIN SANG CHEOL (KR)
Application Number:
PCT/KR2019/018131
Publication Date:
June 25, 2020
Filing Date:
December 19, 2019
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
B01D67/00; B01D69/12; B01D71/26; C08G64/34; C08G64/40
Foreign References:
| KR20170048222A | 2017-05-08 | |||
| KR20170128396A | 2017-11-22 | |||
| KR20170071519A | 2017-06-23 | |||
| KR20170039674A | 2017-04-11 | |||
| KR20150050461A | 2015-05-08 | |||
| KR20180043681A | 2018-04-30 |
Other References:
See also references of EP 3895791A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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