Title:
PURIFICATION METHOD
Document Type and Number:
Japanese Patent JP2022125073
Kind Code:
A
Abstract:
To obtain a specific crystal form from a solution obtained by dissolving a compound in a solvent.SOLUTION: A purification method for crystallizing a compound having at least one crystal form includes setting a specific infrared wavelength precipitated by a specific crystal form from a solution obtained by dissolving the compound in a solvent to a target wavelength, and evaporating the solvent while irradiating the solution with infrared light including the target wavelength, and precipitating the specific crystal form using an infrared emitting device capable of emitting infrared light including the target wavelength.SELECTED DRAWING: None
Inventors:
FUJIUCHI KENKO
KATO HIROTAKA
KONDO YOSHIO
YAMADA KAZUNARI
KATO HIROTAKA
KONDO YOSHIO
YAMADA KAZUNARI
Application Number:
JP2022098548A
Publication Date:
August 26, 2022
Filing Date:
June 20, 2022
Export Citation:
Assignee:
NGK INSULATORS LTD
International Classes:
B01D9/02; C07B63/00; C07D223/26; C07D277/56
Attorney, Agent or Firm:
Aitec International Patent Office