公开(公告)号：US11149194B2

公开(公告)日：2021-10-19

申请号：US16318884

申请日：2017-07-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Carl A. Laskowski ,  Saswata Chakraborty ,  Wayne S. Mahoney ,  Guy D. Joly ,  Michael C. Palazzotto

IPC: C09K11/02 ,  C08F230/02 ,  C08F297/02 ,  C08G77/04 ,  C08L83/10 ,  C09K11/70 ,  G02F1/133 ,  C08G77/442 ,  G02F1/13357 ,  C08G77/14 ,  C08F212/14 ,  G02F1/1335

Abstract: The present disclosure provides a composite particle that includes: a fluorescent semiconductor core/shell nanoparticle (preferably, nanocrystal); and a stabilizing homo- or copolymer combined with the core/shell nanoparticle, the stabilizing (co)polymer comprising styrene monomer units and functionalized with phosphine, arsine or stibine groups.

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

IPC: B01D71/80 ,  C08J5/18 ,  C08F293/00 ,  B01D71/26 ,  B01D71/28 ,  B01D69/02 ,  B01D67/00

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.

公开(公告)号：US20210032378A1

公开(公告)日：2021-02-04

申请号：US16980320

申请日：2019-03-11

Applicant: 3M Innovative Properties Company ,  The Penn State Research Foundation

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.

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.

IPC: B01D71/80 ,  B01D69/08

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.