Patent ID: 11897790
Assignee: ORGANO CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 3:
4. The method for producing ultrapure water according to claim 3, wherein the monolithic organic porous anion exchanger is a co-continuous structural material formed of a three dimensionally continuous framework by intertwining the continuous framework phase and the continuous pore phase, the monolithic organic porous anion exchanger comprising an aromatic vinyl polymer containing 0.1 to 5.0 mol % of crosslinked structural units among all the entire constituent units provided in the monolithic organic porous anion exchanger, with an average thickness of 1 to 60 μm in a dry state, and three dimensionally continuous pores in the three dimensionally continuous framework with an average diameter of 10 to 200 μm in a dry state; the monolithic organic porous anion exchanger has a total pore volume of 0.5 to 10 mL/g in a dry state; and the monolithic organic porous anion exchanger has an anion exchange capacity per volume in a water wet state of 0.2 to 1.0 mg equivalent/mL.