ORGANIC SOLVENT PURIFICATION METHOD AND PURIFICATION APPARATUS

Title:

ORGANIC SOLVENT PURIFICATION METHOD AND PURIFICATION APPARATUS

Document Type and Number:

WIPO Patent Application WO/2023/210370

Kind Code:

A1

Abstract:

Provided are a purification method and purification apparatus that deplete the metal impurities in an organic solvent. This organic solvent purification method is a purification method that depletes the metal impurities in an organic solvent, said organic solvent purification method is characterized by comprising: a filtration step for filtering the organic solvent with a particle removal filter; and an ion-exchange step for passing the organic solvent yielded by the filtration step through an ion exchanger.

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Inventors:

NITANAI YUKARI (JP)
TAKADA NORIKO (JP)

Application Number:

PCT/JP2023/014876

Publication Date:

November 02, 2023

Filing Date:

April 12, 2023

Export Citation:

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Assignee:

ORGANO CORP (JP)

International Classes:

C07C67/56; B01D39/16; B01D61/14; B01D61/58; B01D69/00; B01J39/05; B01J39/07; B01J39/18; B01J41/05; B01J41/07; B01J41/12; B01J45/00; B01J47/028; B01J47/04; C07B63/00; C07C69/14; H01L21/304

Domestic Patent References:

WO2018051716A1	2018-03-22
WO2020013218A1	2020-01-16

Foreign References:

CN110204442A

2019-09-06

Attorney, Agent or Firm:

MIYAZAKI Teruo et al. (JP)

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