The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2026
Filed:
Sep. 08, 2021
Nippon Shokubai Co., Ltd., Osaka, JP;
NIPPON SHOKUBAI CO., LTD., Osaka, JP;
Abstract
Provided is a method for obtaining high-quality products safely and stably. The present invention relates to a method for producing a compound, the method including feeding a slurry containing crystals of the compound to a hydraulic wash column; melting crystals in a crystal-containing circulation slurry discharged from the hydraulic wash column; discharging a mother liquor using a filter from the crystal-containing slurry in the hydraulic wash column; and introducing a liquid having a temperature equal to or higher than the temperature of the mother liquor immediately after being discharged in the mother liquor discharging step into a nozzle attached to the hydraulic wash column from outside the hydraulic wash column, the nozzle being other than a nozzle at a return port for a circulation liquid containing a melt obtained in the melting and a pipe that feeds the crystal-containing slurry to the hydraulic wash column.