公开(公告)号：US11767239B2

公开(公告)日：2023-09-26

申请号：US17053479

申请日：2019-05-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mitsuaki Kobayashi ,  Hideyuki Okada ,  Yukihisa Okada ,  Takaaki Shirai

IPC: C02F1/42 ,  B01J39/05 ,  B01J47/018 ,  B01D39/16 ,  B01J45/00 ,  B01J47/026 ,  B01J47/04 ,  C02F101/20 ,  C02F103/04

CPC classification number: C02F1/42 ,  B01D39/16 ,  B01D39/1661 ,  B01J39/05 ,  B01J45/00 ,  B01J47/018 ,  B01J47/026 ,  B01J47/04 ,  B01D2201/182 ,  B01D2239/0414 ,  B01D2239/1291 ,  C02F2001/425 ,  C02F2101/203 ,  C02F2103/04

Abstract: To provide a filter capable of efficiently removing metal ions in a treatment liquid, and capable of easily obtaining a solution having an extremely low metal ion content. A depth filter includes a porous molded article. The porous molded article is a sintered material of mixed powder or a swollen material of the sintered material. The mixed powder contains dried gel powder and thermoplastic resin powder. The dried gel powder contains an ion exchange resin including a sulfonic acid group, and a nitrogen-containing chelating resin.

公开(公告)号：US20220331726A1

公开(公告)日：2022-10-20

申请号：US17854784

申请日：2022-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mitsuaki Kobayashi ,  Yukihisa Okada ,  Takaaki Shirai ,  Hideyuki Okada

IPC: B01D39/16 ,  B01J39/05 ,  B01J47/018 ,  B01J41/07 ,  B01J45/00

Abstract: A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more.
To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.

公开(公告)号：US20210230022A1

公开(公告)日：2021-07-29

申请号：US17053479

申请日：2019-05-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mitsuaki Kobayashi ,  Hideyuki Okada ,  Yukihisa Okada ,  Takaaki Shirai

IPC: C02F1/42 ,  B01D39/16 ,  B01J39/05 ,  B01J45/00 ,  B01J47/026 ,  B01J47/04 ,  B01J47/018

Abstract: To provide a filter capable of efficiently removing metal ions in a treatment liquid, and capable of easily obtaining a solution having an extremely low metal ion content. A depth filter includes a porous molded article. The porous molded article is a sintered material of mixed powder or a swollen material of the sintered material. The mixed powder contains dried gel powder and thermoplastic resin powder. The dried gel powder contains an ion exchange resin including a sulfonic acid group, and a nitrogen-containing chelating resin.

公开(公告)号：US20210187422A1

公开(公告)日：2021-06-24

申请号：US16769451

申请日：2019-01-03

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mitsuaki Kobayashi ,  Yukihisa Okada ,  Takaaki Shirai ,  Hideyuki Okada

IPC: B01D39/16 ,  B01J39/05 ,  B01J41/07 ,  B01J45/00 ,  B01J47/018

Abstract: A filter includes a porous molding, the porous molding being a sintered product of mixed powder containing dry gel powder including an ion exchange resin and thermoplastic resin powder, or a swelled body of the sintered product. When water having an electric resistivity value of 18 MΩ·cm or more is allowed to pass through a space velocity of 1200 hr−1, the electric resistivity value of water after passage is 15 MΩ·cm or more. To provide a filter that can efficiently remove metal ions in a solution to be treated, and easily acquire a solution having an extremely low content of metal ions.