公开(公告)号：US20230241557A1

公开(公告)日：2023-08-03

申请号：US18103337

申请日：2023-01-30

Applicant: ENTEGRIS, INC.

Inventor： James Hamzik ,  Ying Qi ,  Justin Brewer ,  Kusum Maharjan ,  Lucas Benjamin Snyder

IPC: B01D69/02 ,  B01D71/36 ,  B01D67/00 ,  B01D69/12 ,  B01D61/02 ,  C07B63/00

CPC classification number: B01D69/02 ,  B01D71/36 ,  B01D67/00931 ,  B01D69/1214 ,  B01D61/025 ,  C07B63/00 ,  B01D2323/30 ,  B01D2323/36 ,  B01D2325/18

Abstract: The disclosure provides certain porous polymeric membranes, coated with cross-linked polymerized monomers, comprising monomers having a charge when immersed in an organic liquid. The membranes of the disclosure are useful in removing trace amounts of metallic impurities thereby providing ultra-pure organic liquids.

公开(公告)号：US20230372879A1

公开(公告)日：2023-11-23

申请号：US18199204

申请日：2023-05-18

Applicant: ENTEGRIS, INC.

Inventor： Ying Qi ,  James Hamzik ,  Lucas Benjamin Snyder ,  Saksatha Ly

IPC: B01D69/02 ,  B01D71/36

CPC classification number: B01D69/02 ,  B01D71/36 ,  B01D2325/02834 ,  B01D2325/24 ,  B01D2257/91

Abstract: The disclosure provides porous membranes capable of removing very small particulates from a liquid composition. In certain embodiments, the porous membranes comprise poly(tetrafluoroethylene), wherein the membrane is at least partially coated with a polymer prepared from the free radical reaction of ethylenically-unsaturated monomers, wherein the monomers are comprised of monomers having an amide moiety. In particular embodiments, the membranes are capable of removing, by filtration, microbial particles such as bacteria, thus rendering the resulting liquid composition essentially sterile.