公开(公告)号：US20240058766A1

公开(公告)日：2024-02-22

申请号：US18260436

申请日：2022-01-04

Applicant: SAINT-GOBAIN ISOVER

Inventor： Marion CHENAL ,  Joël AZEVEDO

IPC: B01D69/12 ,  B01D71/10 ,  B01D71/30

CPC classification number: B01D69/1216 ,  B01D71/10 ,  B01D71/301 ,  B01D2325/04 ,  B01D2325/20

Abstract: A method for improving the airtightness of a building or a room in a building, includes using a vapor barrier membrane on the inner face of the walls of the building or the room in the building, wherein the vapor barrier membrane is a humidity-regulating membrane including an active portion which includes a middle layer having a thickness of 2 μm to 200 μm, and consisting of a biopolymer having a water vapor permeability coefficient P1 which increases with average relative humidity and which, when determined at 23° C. and at an average relative humidity of 25.5%, is at least 300 Barrers, and, on either side of the middle layer and in contact with the latter, two outer layers with a thickness of 100 nm to 20 μm, and consisting, independently of each other, of an organic polymer having both a water vapor permeability coefficient P2.

公开(公告)号：US12036518B2

公开(公告)日：2024-07-16

申请号：US17424703

申请日：2020-01-15

Applicant: Dow Global Technologies LLC

Inventor： Junqiang Liu ,  Liren Xu ,  Janet M. Goss ,  Troy D. Wolford

IPC: B01D67/00 ,  B01D53/22 ,  B01D69/02 ,  B01D69/08 ,  B01D71/02 ,  B01D71/30 ,  B01D71/64 ,  B01D71/76 ,  B29D99/00 ,  B29K105/00

CPC classification number: B01D71/301 ,  B01D53/228 ,  B01D67/0083 ,  B01D69/02 ,  B01D69/08 ,  B01D71/021 ,  B01D71/643 ,  B01D71/76 ,  B29D99/005 ,  B01D2325/0233 ,  B29K2105/0085

Abstract: A carbon molecular sieve (CMS) membrane may advantageously be made by pyrolyzing a membrane precursor composition comprised of a carbon forming polymer (e.g., polyimide) blended with a polyvinylidene chloride copolymer (PVDC), the polyvinylidene chloride copolymer being the reaction product of at least 60% to 97% by weight of vinylidene chloride and at least one other comonomer and the carbon forming polymer to polyvinylidene chloride copolymer has a weight ratio of greater than 1 to 99. The membrane precursor composition may be formed by dissolving the carbon forming polymer and PVDC in a solvent to form a dope solution. The dope solution may be shaped, for example, into an asymmetric hollow fiber. The asymmetric hollow fiber may be heated to a temperature to dehydrochorinate the PVDC and then subsequently heated in a non-oxidizing atmosphere to carbonize the polymers of the shaped membrane to form the CMS membrane.

公开(公告)号：US20240181403A1

公开(公告)日：2024-06-06

申请号：US18283637

申请日：2021-12-27

Applicant: ASTOM Corporation

Inventor： Maki KINOSHITA ,  Masayuki KISHINO ,  Kenji FUKUTA

IPC: B01D69/12 ,  B01D71/26 ,  B01D71/28 ,  B01D71/30

CPC classification number: B01D69/125 ,  B01D71/261 ,  B01D71/283 ,  B01D71/301 ,  B01D2325/04 ,  B01D2325/16 ,  B01D2325/42

Abstract: An anion exchange membrane includes an anion exchange resin layer 3 reinforced with a backing material sheet 5. The anion exchange resin layer 3 includes an anion exchange resin that has as an anion exchange group a pyridinium group formed by protonation of a pyridyl group, and a vinyl chloride resin as a thickener. The backing material sheet 5 is made of a polyethylene woven fabric.

公开(公告)号：US12050193B2

公开(公告)日：2024-07-30

申请号：US17256282

申请日：2019-06-21

Applicant: Radiometer Medical ApS

Inventor： Thomas Pedersen Nygaard ,  Palle Schneider ,  Peter Jakobsen Neilson ,  Thomas Steen Hansen ,  Thomas Laursen

IPC: G01N27/333 ,  B01D67/00 ,  B01D71/30 ,  G01N33/50

CPC classification number: G01N27/3335 ,  B01D67/0002 ,  B01D71/301 ,  G01N33/50

Abstract: Magnesium ion selective electrode membranes and the preparation thereof. The membranes are rendered highly selective for magnesium ions by the addition of acidic groups to the preferably PVC membrane, either by introducing a lipophilic compound comprising an acidic group covalently linked to a C4-C18 alkyl-substituted phenyl group (e.g. bis-4-octylphenyl phosphoric acid) into the membrane comprising the magnesium selective ionophore (e.g. a neutral ionophore 1,10-phenanthroline derivative) or by covalently linking an acidic (e.g. a carboxylic) group to the ionophore (e.g. a 1,10-phenanthroline derivative).

公开(公告)号：US20230166219A1

公开(公告)日：2023-06-01

申请号：US17912469

申请日：2021-03-08

Applicant: ASTOM CORPORATION

Inventor： Naoto TAKASHINA ,  Masayuki KISHINO ,  Kenji FUKUTA

IPC: B01D67/00 ,  B01D69/10 ,  B01D71/30 ,  B01D69/02 ,  B01D71/28 ,  C08J5/22 ,  B01J39/05 ,  B01J39/20 ,  B01J47/127

CPC classification number: B01D67/0006 ,  B01D69/1071 ,  B01D71/301 ,  B01D69/02 ,  B01D71/281 ,  C08J5/2243 ,  B01J39/05 ,  B01J39/20 ,  B01J47/127 ,  B01D2325/24 ,  B01D2325/26 ,  B01D2325/42 ,  B01D2325/22 ,  C08J2325/12 ,  C08J2427/06 ,  C08J2423/06

Abstract: A cation-exchange membrane using a polyolefin-based substrate with reduced swelling of an ion-exchange resin and a low electrical resistance is provided. The cation-exchange membrane of the present invention includes a substrate made of polyolefin-based woven fabric, and a sulfonic acid group-containing cation-exchange resin. A portion of the cation-exchange membrane other than the substrate has 23 mass % or more to 35 mass % or less of polyvinyl chloride.