公开(公告)号：US20220203308A1

公开(公告)日：2022-06-30

申请号：US17610683

申请日：2020-06-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Frank Schneider ,  Stefan Weuster ,  Daniel P. Malek ,  Mathias Stroschke

IPC: B01D71/82 ,  B01D69/08 ,  B01D71/68 ,  B01D61/14

Abstract: The present disclosure provides a process for producing a modified microporous membrane, comprising (i) Providing a first solution comprising at least one first polymer and at least one epoxy functional compound; (ii) Providing a second solution comprising at least one diamine compound; (iii) Bringing the first solution and the second solution into contact, thereby obtaining a modified microporous membrane comprising at least one first polymer and the crosslinked reaction product of the at least one epoxy functional compound and the at least one diamine compound; wherein the modified microporous membrane is a hollow-fiber membrane; and wherein the first solution is a dope solution, the second solution is a bore solution, and bringing the first and second solutions into contact takes place in a spinneret.

公开(公告)号：US20240157306A1

公开(公告)日：2024-05-16

申请号：US18280040

申请日：2022-03-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Christian Krumm ,  Ramona Osterloh ,  Pierre-Alexandre Bourgeois ,  Amy S. Determan ,  Sven Frost ,  Manfred Trussner ,  Mathias Stroschke ,  Ki-Joo Sung

IPC: B01D69/08 ,  B01D67/00 ,  B01D69/02 ,  B01D71/58 ,  B01D71/68 ,  C12N7/00

CPC classification number: B01D69/085 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/088 ,  B01D71/58 ,  B01D71/68 ,  C12N7/00 ,  B01D2325/022 ,  B01D2325/02833 ,  C12N2750/14151

Abstract: A hollow-fiber membrane. The hollow-fiber membrane is made from a polymeric blend comprising an aromatic sulfone polymer and polyoxazoline; wherein the hollow-fiber membrane comprises an inner surface facing towards its lumen, an outer surface facing outwards and an intermediate wall having a wall thickness; wherein the hollow-fiber membrane is an integrally asymmetric, permeable hollow-fiber membrane.

公开(公告)号：US20240082790A1

公开(公告)日：2024-03-14

申请号：US18280146

申请日：2022-03-10

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Ramona Osterloh ,  Daniel P. Malek ,  Mathias Stroschke ,  Bartlomiej Kowalczyk ,  Christian Krumm ,  Oliver Schuster ,  Pierre-Alexandre Bourgeois ,  Manfred Trussner

IPC: B01D67/00 ,  B01D63/08 ,  B01D69/02 ,  B01D69/06 ,  B01D71/58 ,  B01D71/68

CPC classification number: B01D67/0011 ,  B01D63/082 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/06 ,  B01D71/58 ,  B01D71/68 ,  B01D2323/02 ,  B01D2325/0212 ,  B01D2325/0233 ,  B01D2325/20 ,  B01D2325/28 ,  B01D2325/36

Abstract: An asymmetric membrane. The asymmetric membrane includes a membrane wall with a first and a second porous surface and an interior situated between the surfaces; a first asymmetrical region towards the first surface; a second asymmetrical region towards the second surface; wherein the asymmetric membrane is made from a polymeric blend comprising an aromatic sulfone polymer and poly (2-oxazoline); and wherein the asymmetric membrane is in the form of a flat sheet.

公开(公告)号：US20230028271A1

公开(公告)日：2023-01-26

申请号：US17785337

申请日：2020-12-14

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mathias Stroschke ,  Stefan Weuster

IPC: B01D67/00 ,  B01D71/68

Abstract: The present disclosure provides a method for treating the surface of a microporous polymeric membrane, comprising immersing a microporous polymeric membrane in a liquid; and applying ultrasonic waves to the microporous polymeric membrane immersed in the liquid.