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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.
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公开(公告)号：US11749769B2
公开(公告)日：2023-09-05
申请号：US17780342
申请日：2020-12-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Vivian W. Jones , Gary E. Gaides , Stephen A. Johnson , Nathaniel I. Lehn , Jiaying Ma , Adam T. Ringberg , Tianyu Wu , Fuming B. Li
IPC: H01L31/054 , G02B5/02
CPC classification number: H01L31/0547 , G02B5/0231
Abstract: A light redirecting film includes a first layer disposed on a second layer with structured major surfaces of the first and second layers facing each other. An optically reflective layer or a metal layer is disposed between the first and second layers. The first layer can be a hot melt adhesive layer and the second layer can be a polymeric layer. The first and second layers can be unitary layers. The first layer can be a first polymeric layer having a softening temperature T1 and the second layer can be a second polymeric layer having a softening temperature T2 greater than T1. Heating and/or applying pressure to the film changes an optical characteristic of the film by less than about 5%.
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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
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.
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14.发明申请公开(公告)号：US20200172809A1
公开(公告)日：2020-06-04
申请号：US16780323
申请日：2020-02-03
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Fuming B. Li , Kelly A. Volp , Mark McCormick
IPC: C09K15/32 , C08K5/00 , C09K15/24 , C07D249/20 , C08K5/138 , C08K5/3475
Abstract: A class of antioxidant compositions include benzotriazole phenolate salts with substituents either ortho to the phenol hydroxide group and/or para to the phenol hydroxide group can be prepared from substituted benzotriazole phenols. The ortho substituent group can be a simple hydrocarbon, alkoxy or amino group, or the ortho substituent group can be a linking group, linking the benzotriazole phenolate to another benzotriazole phenolate group.
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公开(公告)号：US20190336896A1
公开(公告)日：2019-11-07
申请号：US16475209
申请日：2018-01-04
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Fuming B. Li , Kelly A. Volp , John M. Sebastian
IPC: B01D39/16 , C08K5/3492
Abstract: Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a substituted triazine phenolate salt or a combination of substituted triazine phenolate salts. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
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Patent Agency Ranking
公开(公告)号：US10240269B2
公开(公告)日：2019-03-26
申请号：US15320176
申请日：2015-06-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Fuming B. Li , John M. Sebastian
Abstract: Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a fused aromatic thiourea, a fused aromatic urea compound, or a combination thereof. The change-enhancing additive may also include a hindered amine light stabilizer compound. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
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公开(公告)号：US09815067B2
公开(公告)日：2017-11-14
申请号：US14784634
申请日：2014-04-15
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Fuming B. Li , John M. Sebastian
CPC classification number: B03C3/28 , B01D39/1607 , B01D39/1623 , B01D2239/0435 , H01B1/12
Abstract: Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is an arylamino-substituted benzoic acid or an arylamino-substituted benzoic acid salt. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
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公开(公告)号：US20170241054A1
公开(公告)日：2017-08-24
申请号：US15506213
申请日：2015-08-25
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Liming Song , Sachin Talwar , John D. Stelter , John M. Sebastian , Nathan E. Schultz , Eric M. Moore , Fuming B. Li , Andrew R. Fox , Michael R. Berrigan , Zackary J. Becker
CPC classification number: D04H3/11 , B01D39/163 , B01D46/0032 , B01D46/521 , B01D2239/0435 , B01D2239/10 , D01D5/16 , D04H3/011 , D04H3/14 , D10B2505/04
Abstract: Spunbonded electret webs comprising polylactic acid fibers, in which at least some of the polylactic acid fibers are meltspun, drawn, charged fibers that include charging additive; and, methods of making such fibers and webs.
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公开(公告)号：US20170121875A1
公开(公告)日：2017-05-04
申请号：US15320176
申请日：2015-06-09
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Nathan E. Schultz , Fuming B. Li , John M. Sebastian
CPC classification number: D04H1/56 , B01D39/1623 , B01D46/0032 , B01D2239/0435 , B01D2239/0618 , B01D2239/0622 , B01D2239/0627 , D04H1/4291 , D06B1/02 , D06B5/08 , D06B2700/14 , D06M10/00 , D06M10/025
Abstract: Electret webs include a thermoplastic resin and a charge-enhancing additive. The charge-enhancing additive is a fused aromatic thiourea, a fused aromatic urea compound, or a combination thereof. The change-enhancing additive may also include a hindered amine light stabilizer compound. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.
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20.发明公开公开(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
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.
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