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Patent Agency Ranking
公开(公告)号：US11702486B2
公开(公告)日：2023-07-18
申请号：US16980312
申请日：2019-03-11
Inventor： Carl A. Laskowski , Michael A. Yandrasits , Timothy M. Gillard , Zbyslaw R. Owczarczyk , Marina M. Kaplun
IPC: C08F8/32 , C08F8/04 , C08F8/44 , C08F236/06 , C08F297/04 , C08K5/50 , C08L53/02 , H01M8/1004
CPC classification number: C08F8/32 , C08F8/04 , C08F8/44 , C08F236/06 , C08F297/04 , C08K5/50 , C08L53/025 , H01M8/1004
Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.
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公开(公告)号：US20220088546A1
公开(公告)日：2022-03-24
申请号：US17425409
申请日：2020-03-24
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michelle M. Mok , Timothy M. Gillard , Carl A. Laskowski , Lucas D. McIntosh , Hyacinth L. Lechuga
Abstract: A porous membrane, The porous membrane includes a triblock copolymer of the formula ABC, the porous membrane comprising a plurality of pores; wherein the A block has a Tg of 90 degrees Celsius or greater and is present in an amount ranging from 30% to 80% by weight, inclusive, of the total block copolymer; wherein the B block has a Tg of 25 degrees Celsius or less and is present in an amount ranging from 10% to 40% by weight, inclusive, of the total block copolymer and wherein the C block is a water miscible hydrogen-bonding block immiscible with each of the A block and the B block; wherein the porous membrane comprising a first major surface and an opposed second major surface, wherein the first major surface is a nanostructured surface.
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公开(公告)号：US20210205765A1
公开(公告)日：2021-07-08
申请号：US17059545
申请日：2019-07-03
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Lucas D. McIntosh , Michelle M. Mok , John J. Schmidt , Carl A. Laskowski , Timothy M. Gillard
Abstract: An isoporous membrane includes a multiblock copolymer film. The multiblock copolymer is crosslinked, and the film has a toughness of at least 50 kJ/m3 as a free-standing film when wet, as measured by integrating the area under a stress-strain curve for the film. Methods of forming isoporous membranes are also included.
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公开(公告)号：US20210032378A1
公开(公告)日：2021-02-04
申请号：US16980320
申请日：2019-03-11
Inventor： Michael A. Yandrasits , Carl A. Laskowski , Timothy M. Gillard , Michael Hickner , Liang Zhu
IPC: C08F8/32 , C08F8/44 , C08F214/18 , C08F214/16 , C08F212/12 , C08F210/08 , C08J5/22 , H01M8/1004
Abstract: Described herein are cationic polymers having a plurality of quaternary amino groups, methods of making such polymers, and uses of such polymers as ion exchange membranes in electrochemical devices.
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公开(公告)号：US20200047135A1
公开(公告)日：2020-02-13
申请号：US16339832
申请日：2017-11-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Michelle M. Mok , Carl A. Laskowski , Lucas D. McIntosh , Hyacinth L. Lechuga , Timothy M. Gillard , Clinton P. Waller, JR.
Abstract: The present disclosure provides a porous membrane made of pentablock copolymer. The porous membrane includes an ABCBA block copolymer and has a number of pores. The A block is immiscible with each of the B block and the C block, the B block has a glass transition temperature (Tg) of 90 degrees Celsius or greater, and the C block has a Tg of 25 degrees Celsius or less. The A block comprises a poly(alkylene oxide), a substituted epoxide, a polylactam, or a substituted carbonate; B block comprises a vinyl aromatic monomer or a polyalkylmethacrylate and C block comprises a polyacrylate, a polysiloxane or a polyisoprene. A method of making a porous membrane is also provided. The method includes forming a film or a hollow fiber from a solution including a solvent and solids containing an ABCBA block copolymer. The method further includes removing at least a portion of the solvent from the film or the hollow fiber and contacting the film or the hollow fiber with a nonsolvent.
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