公开(公告)号：US11897790B2

公开(公告)日：2024-02-13

申请号：US17053259

申请日：2019-05-15

Applicant: ORGANO CORPORATION

Inventor： Kyohei Tsutano ,  Hitoshi Takada

IPC: C02F1/42 ,  B01J41/04 ,  B01J47/028 ,  B01J41/14 ,  B01J47/022 ,  C02F101/10 ,  C02F101/20 ,  C02F101/22 ,  C02F103/04 ,  C02F103/34

CPC classification number: C02F1/42 ,  B01J41/04 ,  B01J41/14 ,  B01J47/022 ,  B01J47/028 ,  C02F2001/422 ,  C02F2001/425 ,  C02F2101/103 ,  C02F2101/108 ,  C02F2101/20 ,  C02F2101/203 ,  C02F2101/22 ,  C02F2103/04 ,  C02F2103/346 ,  C02F2201/006

Abstract: Provided is a method for producing ultrapure water to supply, to a use point, ultrapure water obtained by treating raw material water for ultrapure water production in an ultrapure water production apparatus, wherein the raw material water for ultrapure water production contains at least one or more elements selected from B, As, Al, Ti, Cr, Fe, Cu, Zn, Sn, V, Ga, and Pb, and wherein an ion exchanger-filled module filled with at least a monolithic organic porous anion exchanger is installed in a treatment path of the ultrapure water production apparatus or in a transfer path from the ultrapure water production apparatus to the use point, and water to be treated is passed through the ion exchanger-filled module for treatment.

公开(公告)号：US10647648B2

公开(公告)日：2020-05-12

申请号：US16066202

申请日：2016-10-28

Applicant: ORGANO CORPORATION

Inventor： Hitoshi Takada ,  Akira Nakamura ,  Masami Imamura ,  Koji Yamanaka

IPC: C07C29/76 ,  B01J39/18 ,  B01J39/04 ,  B01J39/20 ,  C07C31/10 ,  B01J20/28 ,  B01J47/00

Abstract: A method for purifying an organic solvent, comprising contacting an organic solvent containing polyvalent metal ions with a monolithic organic porous ion exchanger.According to the present invention, a method for purifying an organic solvent can be provided, wherein a high rate of removing polyvalent metal ions in an organic solvent is achieved.