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公开(公告)号：US12172137B2
公开(公告)日：2024-12-24
申请号：US18408372
申请日：2024-01-09
Applicant: Amtek Research International LLC
Inventor： Weston J. Wood , Don Spitz , Matthew Alan Warren , Cory S. Rogers , Richard W. Pekala
Abstract: Halogen-free, microporous polyolefin membranes are disclosed herein. The halogen-free, microporous polyolefin membranes can be manufactured using an environmentally friendly manufacturing process that includes extrusion of polymer-plasticizer mixtures followed by sheet formation and extraction of the plasticizer with a halogen-free solvent. The halogen-free solvent has a flashpoint greater than about 23° C. and an initial boiling point at least about 50° C. lower than the flashpoint of the plasticizer. The process can further be a closed loop process in which the halogen-free solvent can be reused.
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公开(公告)号：US20230282935A1
公开(公告)日：2023-09-07
申请号：US18172884
申请日：2023-02-22
Applicant: Amtek Research International LLC
Inventor： Weston J. Wood , Daniel K. Lee , Richard W. Pekala
IPC: H01M50/44 , H01M50/403 , H01M50/431 , H01M50/449 , H01M50/417 , H01M50/426 , H01M50/489 , H01M50/411
CPC classification number: H01M50/44 , H01M50/403 , H01M50/431 , H01M50/449 , H01M50/417 , H01M50/426 , H01M50/489 , H01M50/411 , H01M2220/20
Abstract: Laminable microporous polymer webs wish good dimensional stability are disclosed herein. Methods of making and using laminable microporous polymer webs with good dimensional stability are also disclosed herein.
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公开(公告)号：US11749844B2
公开(公告)日：2023-09-05
申请号：US14911241
申请日：2014-08-11
Applicant: Amtek Research International LLC
Inventor： Chi Thuong-Le La , Matthew Alan Warren , James Emanuel , Richard W. Pekala
IPC: B29C48/05 , B29C48/21 , H01M10/42 , B29C48/00 , H01M10/06 , D04H1/4291 , D04H1/435 , D04H1/56 , H01M50/44 , H01M50/449 , H01M50/414 , H01M50/406 , H01M50/491 , H01M50/451 , B29C43/24 , C08J5/18 , C08K5/42 , D01D5/00 , D01D5/08 , D01D5/088 , D01F1/10 , D01F6/16 , B29K67/00 , B29L7/00 , B29L31/34
CPC classification number: H01M10/4235 , B29C43/24 , B29C48/0021 , B29C48/05 , C08J5/18 , C08K5/42 , D01D5/003 , D01D5/08 , D01D5/088 , D01F1/10 , D01F6/16 , D04H1/4291 , D04H1/435 , D04H1/56 , H01M10/06 , H01M50/406 , H01M50/414 , H01M50/44 , H01M50/449 , H01M50/451 , H01M50/491 , B29K2067/003 , B29K2067/006 , B29L2007/002 , B29L2031/3468 , C08J2367/02 , C08J2471/02 , H01M2220/20
Abstract: A polymer fiber sheet exhibits high porosity and good tensile properties in both “wet” and “dry” states. A fiber modifying agent is incorporated into a polymer extrusion and fiber formation process to produce a highly porous polymer fiber sheet that is instantaneously wettable by an aqueous medium. The fiber modifying agent functions as either one or both (1) a plasticizer that reduces the polymer extrudate melt viscosity and allows the formation of fine fibers during processing and (2) a surface modifying agent that promotes the instantaneous and sustainable wettability of individual polymer fibers and a porous fiber sheet formed from them. The polymer fiber sheet maintains its wettability even after repeated washing and drying cycles. The resultant fiber sheet can be densified and embossed to provide a desired thickness and porosity, while at the same time longitudinal ribs with desired pattern can also be formed on the fiber sheet.
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公开(公告)号：US09847519B2
公开(公告)日：2017-12-19
申请号：US14775604
申请日：2014-03-17
Applicant: Amtek Research International LLC
Inventor： Richard W. Pekala , Daniel K. Lee , James E. Emanuel , Robert Waterhouse , Weston J. Wood , Andrew Wimer
IPC: H01M2/16 , H01M2/14 , C08J5/18 , C08J7/04 , H01M10/0525
CPC classification number: H01M2/1686 , C08J5/18 , C08J7/045 , C08J2323/06 , C08J2409/04 , H01M2/145 , H01M2/1646 , H01M2/1653 , H01M2/166 , H01M10/0525
Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
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公开(公告)号：US09748546B2
公开(公告)日：2017-08-29
申请号：US14604539
申请日：2015-01-23
Applicant: Amtek Research International LLC
Inventor： Jeff Frenzel , Jungseung Kim , Robert R. Waterhouse , Richard W. Pekala
Abstract: A flexible microporous polymer sheet having first and second opposite major surfaces comprises a polymer matrix binding a filler component that exhibits high oil absorption capacity in its initial state before the start of material processing. The polymer matrix includes a polyolefin component and has three-dimensional interconnecting and interpenetrating pore and polymer networks through which the bound filler component is distributed from the first major surface to the second major surface. The polyolefin and filler components are included in amounts that result in a microporous polymer sheet having between about 75% and about 90% porosity and containing less than about 10 wt. % polyolefin component. Preferred polyolefin and filler components include ultrahigh molecular weight polyethylene and high oil absorption precipitated silica, respectively.
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公开(公告)号：US20160028067A1
公开(公告)日：2016-01-28
申请号：US14775604
申请日：2014-03-17
Applicant: AMTEK RESEARCH INTERNATIONAL LLC
Inventor： Richard W. Pekala , Daniel K. Lee , James E. Emanuel , Robert Waterhouse , Weston J. Wood , Andrew Wimer
CPC classification number: H01M2/1686 , C08J5/18 , C08J7/045 , C08J2323/06 , C08J2409/04 , H01M2/145 , H01M2/1646 , H01M2/1653 , H01M2/166 , H01M10/0525
Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
Abstract translation: 具有良好耐热性和尺寸稳定性的薄而独立的微孔聚烯烃网络包括无机表面层。 第一优选实施方案是其中胶体无机颗粒以其本体结构存在的微孔聚烯烃基膜。 第二和第三优选实施方案中的每一个都是具有无机表面层的薄的独立的微孔聚烯烃网，所述无机表面层不含无机颗粒的有机氢键组分。 第二实施方案的无机表面层通过使用无机酸的氢键实现，第三实施方案的无机表面层通过无机颗粒上的表面基团的氢键和化学反应中的一种或两种来实现。
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公开(公告)号：US20240222702A1
公开(公告)日：2024-07-04
申请号：US18537317
申请日：2023-12-12
Applicant: AMTEK RESEARCH INTERNATIONAL LLC
Inventor： Daniel Wandera , Robert Waterhouse , Wyatt Self , Eric B. Hostetler , Richard W. Pekala
IPC: H01M10/0565 , H01M10/0567 , H01M10/0569 , H01M50/414 , H01M50/417 , H01M50/42 , H01M50/423 , H01M50/446 , H01M50/449 , H01M50/457 , H01M50/491
CPC classification number: H01M10/0565 , H01M10/0567 , H01M10/0569 , H01M50/414 , H01M50/417 , H01M50/42 , H01M50/423 , H01M50/446 , H01M50/449 , H01M50/457 , H01M50/491 , H01M2300/0011 , H01M2300/0091
Abstract: Methods of reducing acid stratification with an acid-soluble and acid-stable polymer with a high molecular weight are disclosed herein. Electrolytes and separators for an energy storage device are disclosed herein. The separator includes a coating containing an acid-soluble and acid-stable polymer with a high molecular weight. The electrolyte includes sulfuric acid and an acid-soluble and acid-stable polymer with a high molecular weight. Methods of making the separators disclosed herein and methods of making batteries are also disclosed herein.
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公开(公告)号：US11894517B2
公开(公告)日：2024-02-06
申请号：US17093470
申请日：2020-11-09
Applicant: AMTEK RESEARCH INTERNATIONAL LLC
Inventor： Daniel Wandera , Robert Waterhouse , Wyatt Self , Eric B. Hostetler , Richard W. Pekala
IPC: H01M10/0565 , H01M50/417 , H01M50/446 , H01M10/0567 , H01M10/0569 , H01M50/449 , H01M50/414 , H01M50/42 , H01M50/423 , H01M50/457 , H01M50/491
CPC classification number: H01M10/0565 , H01M10/0567 , H01M10/0569 , H01M50/414 , H01M50/417 , H01M50/42 , H01M50/423 , H01M50/446 , H01M50/449 , H01M50/457 , H01M50/491 , H01M2300/0011 , H01M2300/0091
Abstract: Methods of reducing acid stratification with an acid-soluble and acid-stable polymer with a high molecular weight are disclosed herein. Electrolytes and separators for an energy storage device are disclosed herein. The separator includes a coating containing an acid-soluble and acid-stable polymer with a high molecular weight. The electrolyte includes sulfuric acid and an acid-soluble and acid-stable polymer with a high molecular weight. Methods of making the separators disclosed herein and methods of making batteries are also disclosed herein.
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公开(公告)号：US20210309815A1
公开(公告)日：2021-10-07
申请号：US17204577
申请日：2021-03-17
Applicant: AMTEK RESEARCH INTERNATIONAL LLC
Inventor： Richard W. Pekala , Daniel K. Lee , James E. Emanuel , Robert Waterhouse , Weston J. Wood , Andrew Wimer
IPC: C08J5/18 , C08J7/04 , H01M50/449 , H01M50/403 , H01M50/411 , H01M50/431 , H01M50/446 , C08J7/043
Abstract: A thin, freestanding, microporous polyolefin web with good heat resistance and dimensional stability includes an inorganic surface layer. A first preferred embodiment is a microporous polyolefin base membrane in which colloidal inorganic particles are present in its bulk structure. Each of second and third preferred embodiments is a thin, freestanding microporous polyolefin web that has an inorganic surface layer containing no organic hydrogen bonding component for the inorganic particles. The inorganic surface layer of the second embodiment is achieved by hydrogen bonding with use of an inorganic acid, and the inorganic surface layer of the third embodiment is achieved by one or both of hydrogen bonding and chemical reaction of the surface groups on the inorganic particles.
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公开(公告)号：US10396330B2
公开(公告)日：2019-08-27
申请号：US15385531
申请日：2016-12-20
Applicant: AMTEK RESEARCH INTERNATIONAL LLC
Inventor： Richard W. Pekala , Jeff Frenzel , Robert R. Waterhouse
IPC: H01M2/16 , B29C48/00 , H01M2/14 , B01J2/04 , B29B11/12 , B29B11/16 , B29D30/04 , C08K3/36 , B29K105/16 , B29K421/00 , B29K509/00 , B29L31/34
Abstract: Granules containing mixtures of silica powder and cross-linked rubber powder are used in the manufacture of battery separators or vehicle tires. A granule contains silica and rubber powders in proportional amounts that form a silica powder carrier within which rubber powder particles are distributed. Incorporating silica-rubber granules in the manufacturing process of polyethylene separators offers a way to limit water loss in and improve the cycle life of a deep cycle lead-acid battery. Incorporating silica-rubber granules in the manufacturing process of vehicle tires affords advantages including easier material handling, reduced production of dust, and reduction in the number of ingredients measured and added to the formulation.
