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公开(公告)号：US11167251B2
公开(公告)日：2021-11-09
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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公开(公告)号：US10889692B2
公开(公告)日：2021-01-12
申请号：US16477741
申请日：2018-02-13
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A. Laskowski , Timothy M. Gillard , Michelle M. Mok , Lucas D. McIntosh
IPC: C08J5/18 , C08F297/00 , C08G81/02
Abstract: Described is a triblock copolymer of the formula ABC wherein B is a hydrogenated vinyl aromatic block having a Tg of ≥110° C. and comprising 30-90 wt. % of the copolymer; C is a rubbery block having a Tg≤25° C. and comprising 10-70 wt. % of the copolymer; and A is an block derived from ring-opening polymerization, substantially incompatible with both B and C blocks.
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公开(公告)号：US20190322788A1
公开(公告)日：2019-10-24
申请号：US16341561
申请日：2017-11-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A. Laskowski , Timothy M. Gillard , Michelle M. Mok , Lucas D. McIntosh
Abstract: Novel pentablock polymers of the formula ABCBA are provided wherein C is a glassy aromatic block having a Tg of >70° C.; B is a rubber block having a Tg
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公开(公告)号：US20240226820A1
公开(公告)日：2024-07-11
申请号：US18553957
申请日：2022-04-01
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A. Laskowski , Timothy M. Gillard , Lucas D. McIntosh , Clinton P. Waller, Jr.
CPC classification number: B01D71/80 , B01D69/02 , B01D69/08 , B01D71/26 , B01D71/46 , C08F297/046 , C08F297/048 , B01D2325/36
Abstract: Tetrablock copolymers of formula ABAC are provided that can be used to form porous articles such as porous hollow fibers and porous membranes. Each A block is formed from a vinyl aromatic monomer, the B block is formed from a conjugated diene monomer, and the C block is formed from at least two different oxirane (i.e., epoxy) compounds. The tetrablock copolymers can advantageously be prepared without the use of functional initiators and/or difunctional initiators. The tetrablock copolymers are well suited for solvent induced phase separation (SIPS) processing to prepare porous articles. Membranes formed from the tetrablock copolymers can be used for water treatment and biopharmaceutical purification and/or separation processes.
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5.发明公开公开(公告)号：US20240066473A1
公开(公告)日：2024-02-29
申请号：US17766395
申请日：2020-12-08
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Clinton P. Waller, Jr. , Michelle M. Mok , Lucas D. McIntosh , Timothy M. Gillard , Carl A. Laskowski , Hyacinth L. Lechuga
CPC classification number: B01D69/02 , B01D71/80 , B01D71/26 , B01D71/281 , B01D71/521 , B01D71/5211 , B01D71/283 , B01D69/12 , B01D67/0013 , B01D2325/0212 , B01D2325/04 , B01D2325/02832 , B01D2325/02833
Abstract: The present disclosure provides an article including an isoporous membrane disposed on a porous substrate. The iso-porous membrane includes a triblock copolymer or a pentablock copolymer. The isoporous membrane has a thickness and is isoporous throughout its thickness. A method of making an article is also provided, which does not require a solvent exchange process. The method includes depositing a composition on a porous substrate, thereby forming a fdm, and removing at least a portion of the solvent from the film, thereby forming an isoporous membrane having numerous pores. The composition contains a solvent and solids including a triblock copolymer or a pentablock copolymer. The article advantageously can be hydrophilic and provides sharp molecular weight cut-offs and high flux.
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Patent Agency Ranking
公开(公告)号：US11254777B2
公开(公告)日：2022-02-22
申请号：US15733579
申请日：2019-03-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Timothy M. Gillard , Carl A. Laskowski , Michael A. Yandrasits
IPC: C08F297/02 , C08F8/32
Abstract: Described herein are nitrogen-containing multi-block copolymers, as well as methods for making such multi-block copolymers, and articles comprising such multi-block copolymers. The nitrogen-containing multi-block copolymers contains at least one A block comprising polyisoprene; and at least one B block comprising amino-functionalized polybutadiene, the amino-functionalized polybutadiene comprising nitrogen-containing pendant groups.
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公开(公告)号：US11834544B2
公开(公告)日：2023-12-05
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 , C08F210/08 , C08F212/12 , C08F214/16 , C08F214/18 , C08J5/22 , H01M8/1004
CPC classification number: C08F8/32 , C08F8/44 , C08F210/08 , C08F212/12 , C08F214/16 , C08F214/18 , C08J5/2243 , 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：US20210002407A1
公开(公告)日：2021-01-07
申请号：US15733579
申请日：2019-03-11
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Timothy M. Gillard , Carl A. Laskowski , Michael A. Yandrasits
IPC: C08F297/02 , C08F8/32
Abstract: Described herein are nitrogen-containing multi-block copolymers, as well as methods for making such multi-block copolymers, and articles comprising such multi-block copolymers. The nitrogen-containing multi-block copolymers contains at least one A block comprising polyisoprene; and at least one B block comprising amino-functionalized polybutadiene, the amino-functionalized polybutadiene comprising nitrogen-containing pendant groups.
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公开(公告)号：US10781279B2
公开(公告)日：2020-09-22
申请号：US16341561
申请日：2017-11-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A. Laskowski , Timothy M. Gillard , Michelle M. Mok , Lucas D. McIntosh
Abstract: Novel pentablock polymers of the formula ABCBA are provided wherein C is a glassy aromatic block having a Tg of >70° C.; B is a rubber block having a Tg
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公开(公告)号：US20230357500A1
公开(公告)日：2023-11-09
申请号：US18004910
申请日：2021-06-14
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Carl A. Laskowski , Timothy M. Gillard , Ranjani V. Parthasarathy , Hannah C. Cohen , Max A. Kruziki
IPC: C08G65/327 , C08G65/08 , C08G81/00 , A61K31/80
CPC classification number: C08G65/327 , C08G65/08 , C08G81/00 , A61K31/80 , C08G2650/58
Abstract: Phosphate-containing copolymers, medical compositions containing the phosphate-containing copolymers, and methods of suppressing microbial virulence are provided. By suppressing virulence, administration and/or application of the medical compositions can be used to prevent, mitigate, or treat a microbial infection. The phosphate-containing copolymers are prepared by phosphorylating either a random copolymer or a random copolymeric block that contains monomeric units of propylene oxide and glycidol.
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