公开(公告)号：US11701623B2

公开(公告)日：2023-07-18

申请号：US17320973

申请日：2021-05-14

Applicant: ENTEGRIS, INC.

Inventor： Dongzhu Wu ,  Kwok Shun Cheng ,  Rajnikant B. Patel ,  Tony Yu ,  Puth Proeung ,  Maybelle Woo

IPC: B01D67/00 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26

CPC classification number: B01D69/122 ,  B01D67/0002 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/08 ,  B01D2325/04

Abstract: The present disclosure relates to a composite membrane formed by lamination of two or more separate porous polymeric layers, as well as to a method and system for lamination. Advantageously, the resulting composite is a single layer, being difficult to separate into its component layers, yet effectively maintains the filtering capabilities of the component layers when not laminated.

公开(公告)号：US20220323912A1

公开(公告)日：2022-10-13

申请号：US17707756

申请日：2022-03-29

Applicant: ENTEGRIS, INC.

Inventor： Aabid A. Mir ,  Jad A. Jaber ,  Rajnikant B. Patel ,  Andrew Boudreau ,  Vinay Kalyani

IPC: B01D69/14 ,  B01D69/02 ,  B01D69/12 ,  B01D71/02 ,  C02F1/44 ,  B01D61/14 ,  B01D71/44 ,  B01D67/00

Abstract: Provided are porous polymeric filter membranes comprising a polymer having admixed therein at least one carbonaceous material. The membranes are capable of removing trace amounts of various impurities from a liquid composition, including metal ions, acids, bases, and organic contaminants.

公开(公告)号：US20140339722A1

公开(公告)日：2014-11-20

申请号：US14275004

申请日：2014-05-12

Applicant: Entegris, Inc.

Inventor： Larry Y. Yen ,  Rajnikant B. Patel

IPC: B29C67/20 ,  B29C47/06

CPC classification number: B29C67/202 ,  B01D67/0018 ,  B01D67/003 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26 ,  B01D2323/12 ,  B01D2323/18 ,  B01D2325/022 ,  B01D2325/42 ,  B29C48/08 ,  B29C48/21 ,  B29C48/30 ,  B29C48/307 ,  B29C48/395 ,  B29C48/49 ,  B29K2023/0683 ,  B29K2105/04 ,  B29K2105/251 ,  B29K2995/0088 ,  B29L2009/00 ,  B29L2031/755 ,  Y10T428/24942 ,  Y10T428/2495 ,  Y10T428/24996 ,  Y10T428/249961 ,  Y10T428/249979 ,  Y10T428/24998 ,  Y10T428/249981 ,  Y10T428/31913

Abstract: A multilayer porous membrane formed of an extrudable polymer is provided. The membrane is formed by co-extruding at least two compositions, each of which comprises a heated porogen and polymer while in contact with each other under conditions to minimize or prevent unstable interfacial flow between extruded layers. In a preferred embodiment, the two compositions are different such that the layers have a different average pore size.

Abstract translation: 提供由可挤出聚合物形成的多层多孔膜。 通过共挤出至少两种组合物形成膜，每种组合物包括加热的致孔剂和聚合物，同时彼此接触，以最小化或防止挤出层之间不稳定的界面流动。 在优选的实施方案中，两种组合物是不同的，使得这些层具有不同的平均孔径。