公开(公告)号：US20230405551A1

公开(公告)日：2023-12-21

申请号：US18198349

申请日：2023-05-17

Applicant: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC

Inventor： Jayesh Dharia ,  Michael Ostrander

IPC: B01J20/26 ,  B01J20/28 ,  B01J20/289 ,  B01J20/32 ,  B01D15/38

CPC classification number: B01J20/265 ,  B01J20/28052 ,  B01J20/28035 ,  B01J20/28038 ,  B01J20/289 ,  B01J2220/54 ,  B01J20/3278 ,  B01J20/3297 ,  B01J20/321 ,  B01D15/3828 ,  B01J20/3219

Abstract: A method for producing a chromatography medium by:



a) exposing a nanoweb sheet having mean flow pore size from 0.1 to 5 μm and a porosity from 40 to 90 volume % to a gaseous phase comprising a vinyl monomer to produce a functionalized nanoweb sheet;
b) layering a plurality of functionalized nanoweb sheets to form a functionalized nanoweb stack;
c) cutting the functionalized nanoweb stack with a die to form die-cut functionalized nanoweb stacks having regular shapes; and
d) exposing the die-cut functionalized nanoweb stacks in an aqueous medium to a ligand such as a protein which is capable of forming covalent bonds.

公开(公告)号：US20240141566A1

公开(公告)日：2024-05-02

申请号：US17979365

申请日：2022-11-02

Applicant: DDP SPECIALTY ELECTRONIC MATERIALS US, LLC

Inventor： CHUNXIA COSTEUX ,  Gregory T. Dee ,  Michael Ostrander ,  John David Finch ,  Mathew Olsen

IPC: D04H1/4282 ,  D04H1/58

CPC classification number: D04H1/4282 ,  D04H1/58 ,  D10B2321/121

Abstract: Sulfonated polystyrene fibers having an average diameter from 450 nm to 2000 nm and a capacity from 0.05 meq/g to 2.0 meq/g.