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1. WO2020091974 - POROUS POLYETHYLENE FILTER MEMBRANE WITH ASYMMETRIC PORE STRUCTURE, AND RELATED FILTERS AND METHODS

Publication Number WO/2020/091974
Publication Date 07.05.2020
International Application No. PCT/US2019/055907
International Filing Date 11.10.2019
IPC
B01D 71/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
26Polyalkenes
B01D 67/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
CPC
B01D 2325/022
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2325Details relating to properties of membranes
02Details relating to pores or pososity of the membranes
022Asymmetric membranes
B01D 2325/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2325Details relating to properties of membranes
04Characteristic thickness
B01D 63/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
63Apparatus in general for separation processes using semi-permeable membranes
14Pleat-type membrane modules
B01D 67/002
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
67Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
0002Organic membrane formation
002from melts
B01D 69/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
69Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
02characterised by their properties
B01D 71/26
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
71Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06Organic material
26Polyalkenes
Applicants
  • ENTEGRIS, INC. [US]/[US]
Inventors
  • CHENG, Kwok-Shun
  • PATEL, Rajni
  • WOO, Maybelle
  • PROEUNG, Puth
Agents
  • HARAN, John T.
Priority Data
62/754,30101.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) POROUS POLYETHYLENE FILTER MEMBRANE WITH ASYMMETRIC PORE STRUCTURE, AND RELATED FILTERS AND METHODS
(FR) MEMBRANE DE FILTRE EN POLYÉTHYLÈNE POREUX À STRUCTURE DE PORES ASYMÉTRIQUE, ET FILTRES ET PROCÉDÉS ASSOCIÉS
Abstract
(EN)
Described are liquid-flowable, porous polyethylene filter membranes that include two opposing sides and that have an asymmetric pore structure; filter components and filters that include this type of porous polyethylene filter membrane; methods of making the porous polyethylene filter membranes, filter components, and filters; and methods of using a porous polyethylene filter membrane, filter component, or filter, to filter a fluid such as a liquid chemical to remove unwanted material from the fluid.
(FR)
L'invention concerne des membranes de filtre en polyéthylène poreux à écoulement liquide qui comprennent deux côtés opposés et qui ont une structure de pore asymétrique ; des composants de filtre et des filtres qui comprennent ce type de membrane de filtre en polyéthylène poreux ; des procédés de fabrication des membranes de filtre en polyéthylène poreux, des composants de filtre, et des filtres ; et des procédés d'utilisation d'une membrane de filtre en polyéthylène poreux, d'un composant de filtre ou d'un filtre, pour filtrer un fluide tel qu'un produit chimique liquide afin d'éliminer un matériau indésirable du fluide.
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