公开(公告)号：US20130125816A1

公开(公告)日：2013-05-23

申请号：US13746077

申请日：2013-01-21

Applicant: 3M Innovative Properties Company

Inventor： Moses M. David ,  Gina M. Buccellato ,  John H. Huberty ,  Seth M. Kirk

IPC: C23C16/505

CPC classification number: C23C16/505 ,  C08J9/36 ,  Y10T428/249953 ,  Y10T428/249955 ,  Y10T442/20

Abstract: An apparatus for fluorinating a substrate. The apparatus includes a vacuum chamber and a means for generating a fluorine-containing plasma throughout the entire chamber. The apparatus includes a capacitively-coupled system within the chamber that has at least one electrode powered by an RF source and at least one grounded electrode substantially parallel to the powered electrode. The electrodes are separated by about 25 mm or less.

Abstract translation: 一种用于氟化基底的装置。 该装置包括真空室和用于在整个室内产生含氟等离子体的装置。 该装置包括在室内的电容耦合系统，其具有由RF源供电的至少一个电极和基本上平行于动力电极的至少一个接地电极。 电极间隔约25mm或更小。

公开(公告)号：US20230390678A1

公开(公告)日：2023-12-07

申请号：US18249989

申请日：2021-11-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Zackary J. Becker ,  Daniel C. Duan ,  Himanshu Jasuja ,  Seth M. Kirk ,  Fuming B. Li ,  John M. Sebastian ,  Georgiy Teverovskiy

IPC: B01D39/16 ,  D01F8/06 ,  D01F8/16 ,  D04H1/4382 ,  D04H3/007

CPC classification number: B01D39/1623 ,  D01F8/06 ,  D01F8/16 ,  D04H1/43828 ,  D04H3/007 ,  A62B23/02

Abstract: Described herein is a thermoplastic core-sheath fiber. The thermoplastic core-sheath fiber comprises a core having a coextensive sheath layer disposed thereon, wherein the core comprises a first polymeric resin and an electrostatic charge enhancing additive, and the sheath layer comprising a second polymeric resin, with the proviso that if the second polymeric resin comprises poly(4-methyl-1-pentene), then the second polymeric resin does not comprise 100 wt % of poly(4-methyl-1-pentene). These thermoplastic core-sheath fibers can be used in filtering applications.

公开(公告)号：US20220323890A1

公开(公告)日：2022-10-13

申请号：US17622045

申请日：2020-06-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Daniel C. Duan ,  Seth M. Kirk ,  Michael R. Berrigan ,  Zackary J. Becker ,  Fuming B. Li ,  John M. Sebastian

IPC: B01D39/16 ,  A62B23/02

Abstract: A filter assembly comprises an air filter medium and a prefilter medium. The prefilter medium comprises a second nonwoven fibrous web comprising poly(4-methylpentene) and an electrostatic charging additive and has a second electret charge. The filter assembly is configured such that air passing through the prefilter is directed through the air filter medium. A respirator includes the filter assembly. A prefilter assembly comprises a third nonwoven fibrous web retained by a prefilter frame. The third nonwoven fibrous web comprises: core-sheath fiber comprising a fiber core having a poly(4-methylpentene) sheath layer disposed thereon; and an electrostatic charging additive, wherein the electrostatic charging additive is contained in at least one of the fiber core or the sheath layer. The third nonwoven fibrous web has a third electret charge.

公开(公告)号：US10807046B2

公开(公告)日：2020-10-20

申请号：US15319111

申请日：2015-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Michelle M. Mok ,  Kannan Seshadri ,  Moses M. David ,  Seth M. Kirk ,  Daniel Carvajal

IPC: B01D67/00 ,  B01D69/10 ,  B01D69/12 ,  B01D71/26 ,  B01D71/32 ,  B01D71/44 ,  B01D71/70 ,  B01D71/42

Abstract: Asymmetric articles are described including a porous substrate with two opposing major surfaces and a porous structure extending between the surfaces, and a polymeric coating on one of the major surfaces and extending into the porous structure to a depth of the porous structure. Methods for making an asymmetric composite article are also provided, including providing a porous substrate, treating the porous substrate with a plasma treatment or a corona treatment from one major surface to a depth of the porous structure between the two major surfaces. The method further includes applying a coating solution to the treated porous substrate and drying the coating solution to form a composite asymmetric composite article having a polymeric coating on one major surface and extending into the porous structure to the depth of the treated porous structure.

公开(公告)号：US10312001B2

公开(公告)日：2019-06-04

申请号：US15620016

申请日：2017-06-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Mark J. Pellerite ,  Seth M. Kirk ,  Hyacinth L. Lechuga

IPC: B32B3/02 ,  H01B13/00 ,  H01L51/52 ,  H01B1/22 ,  H01L51/00 ,  H01L51/10 ,  H01L51/44 ,  H05K9/00 ,  H01L27/32

Abstract: A composite layer including first and second layers is described. The first layer includes a plurality of metallic nanowires and the second layer includes a polymeric overcoat disposed on the nanowires. In top plan view, the composite layer has at least one first region and at least one second region, where the nanowires in each first region form an interconnected network of the nanowires, and each second region includes a plurality of nanotrenches through the second layer into the first layer.

公开(公告)号：US20240009606A1

公开(公告)日：2024-01-11

申请号：US18252199

申请日：2021-11-29

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Kelly A. Volp ,  Nathan E. Schultz ,  Daniel C. Duan ,  Seth M. Kirk ,  Fuming B. Li ,  John M. Sebastian

IPC: B01D39/16 ,  C08K5/5399 ,  A62B23/02 ,  D04H3/007 ,  D04H3/16 ,  D06B1/02 ,  D06M10/02 ,  D06M11/05

CPC classification number: B01D39/1623 ,  C08K5/5399 ,  A62B23/025 ,  D04H3/007 ,  D04H3/16 ,  D06B1/02 ,  D06M10/025 ,  D06M11/05 ,  C08K2201/001 ,  C08K2201/019 ,  B01D2239/0435 ,  B01D2239/10 ,  B01D2239/0622 ,  B01D2239/0618 ,  D06M2101/20

Abstract: Described herein is the use of a cyclotriphosphazene core substituted with at least three amino-cyclic carbon groups used as a charge-enhancing additive in a thermoplastic resin. Such compositions may be used in filtering applications.

公开(公告)号：US20220372666A1

公开(公告)日：2022-11-24

申请号：US17621994

申请日：2020-06-24

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Daniel C. Duan ,  Seth M. Kirk ,  Michael R. Berrigan ,  Zackary J. Becker ,  Fuming B. Li ,  John M. Sebastian

IPC: D01F8/06 ,  D01F8/14 ,  D01F8/10 ,  D01F1/10 ,  B01D39/16 ,  D01D5/34 ,  D04H1/4382 ,  D04H3/007 ,  D04H3/011 ,  D04H3/018 ,  D04H1/435 ,  D04H1/4291 ,  A62B23/02

Abstract: A thermoplastic core-sheath fiber comprises: a polymer fiber core having a coextensive sheath layer disposed thereon, and an electrostatic charge enhancing additive. The sheath layer may comprise poly(4-methyl-1-pentene) and the fiber core and the sheath layer have different compositions. At least one of the fiber core or the sheath layer comprises an electret charge. A nonwoven fibrous web comprising the core-sheath fibers and a respirator including the nonwoven fibrous web are also disclosed.

公开(公告)号：US20170044709A1

公开(公告)日：2017-02-16

申请号：US15304096

申请日：2015-04-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Zeba Parkar ,  Seth M. Kirk ,  Moses M. David ,  Craig A. Miller ,  Derrick M. Poirier

IPC: D06M10/02 ,  C08J5/08 ,  C08J5/06 ,  C03C25/62 ,  C08J5/24

CPC classification number: D06M10/025 ,  C03C25/6293 ,  C08J5/06 ,  C08J5/08 ,  C08J5/24 ,  C08J2363/00 ,  D06M2101/40 ,  D06M2200/40 ,  D06M2400/01

Abstract: Surface treated fibers and methods of treating individual fiber surfaces. One exemplary method includes subjecting a precursor gas to a plasma-generating discharge within an atmospheric plasma generator to generate a reactive species flow including reactive oxygen species, and exposing a reinforcing fiber to the reactive species flow for a treatment time sufficient to functionalize the reinforcing fiber with oxygen such that at least one of a composite matrix interfacial adhesion of the reinforcing fiber or a composite matrix interfacial strength of the reinforcing fiber, increases. The precursor gas preferably includes a carrier gas and an oxidative gas, the oxidative gas being contained in an amount of up to 25% by volume of the precursor gas.

Abstract translation: 表面处理纤维和处理单个纤维表面的方法。 一种示例性方法包括使前体气体在大气等离子体发生器内进行等离子体产生放电以产生包括活性氧物质的反应性物质流，并将增强纤维暴露于反应物流中足以使强化纤维官能化的处理时间 使得增强纤维的复合基质界面粘合或增强纤维的复合基体界面强度中的至少一种增加。 前体气体优选包括载气和氧化气体，氧化性气体的含量高达前体气体体积的25％。

公开(公告)号：US20150024148A1

公开(公告)日：2015-01-22

申请号：US14504514

申请日：2014-10-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Seth M. Kirk ,  Marvin E. Jones ,  Steven J. Pachuta ,  Andrew W. Chen ,  William P. Klinzing ,  Patrick J. Sager

IPC: C23C16/50 ,  B03C3/28

CPC classification number: B01D39/1623 ,  B01D46/0032 ,  B01D2239/025 ,  B01D2239/0414 ,  B01D2239/0435 ,  B01D2239/0622 ,  B01D2239/0627 ,  B01D2239/10 ,  B03C3/28 ,  B03C3/30 ,  B03C3/64 ,  B03C7/006 ,  B03C2201/26 ,  C23C16/50 ,  D06M10/025 ,  D06M10/06 ,  D06M2200/00 ,  Y10T442/2008 ,  Y10T442/2475 ,  Y10T442/608 ,  Y10T442/68

Abstract: A method of making a fluorinated fibrous web, which method includes providing a nonwoven web 22 that contains polymeric fibers, creating a plasma that contains fluorine atoms at a first location 14, and contacting the nonwoven web with products from the plasma at a second location 26 remote from the first location 14. The method avoids exposure of the web to the plasma and hence expands the manufacturing processing window. Webs so fluorinated have a different C3F4H+ to C2F5+ ratio when compared to locally fluorinated webs having similar levels of surface fluorination. The remote fluorinated webs can be subsequently charged electrically to provide a good performing electret filter 40 suitable for use in an air purifying respirator 30. Webs fluorinated in accordance with this invention also may exhibit good performance even after being “aged” at high temperatures.

Abstract translation: 一种制造氟化纤维网的方法，该方法包括提供含有聚合物纤维的非织造纤维网22，在第一位置14产生含有氟原子的等离子体，并使第二位置26处的来自等离子体的产物接触非织造纤维网 远离第一位置14.该方法避免了将幅材暴露于等离子体，并因此扩展了制造处理窗口。 当与具有相似水平的表面氟化的局部氟化网相比时，如此氟化的网具有不同的C3F4H +至C2F5 +比。 远程氟化纤维网随后可以电连接以提供适合用于空气净化呼吸器30的性能优异的驻极体过滤器40.根据本发明氟化的网络即使在高温下“老化”之后也可能表现出良好的性能。