公开(公告)号：US20220242089A1

公开(公告)日：2022-08-04

申请号：US17595591

申请日：2020-06-09

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Heonjoo Ha ,  Tien Tsung Wu ,  Nathan E. Schultz ,  Gerry A. Hoffdahl

IPC: B32B5/24 ,  B32B5/18 ,  B32B5/02 ,  B32B5/08 ,  H01M50/249 ,  C08K3/32 ,  C08K3/34 ,  C08J9/36

Abstract: A flame retardant foam. The flame retardant foam includes a from 25 to 75 wt % polyvinyl alcohol foam; and a from 25 to 95 wt % fire retardant coated on the polyvinyl alcohol foam, wherein the fire retardant comprises ammonium polyphosphate or sodium metasilicate; wherein the thickness of the foam is from 2 mm to 1 cm.

公开(公告)号：US11053373B2

公开(公告)日：2021-07-06

申请号：US15741387

申请日：2016-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Fuming B. Li ,  Kelly A. Volp ,  Mark McCormick

IPC: C08K5/3475 ,  C08K5/3472 ,  C08K5/544 ,  C08F10/06 ,  C08K5/378 ,  C08K5/41

Abstract: Polymeric compositions include at least one polymer that is free of ester linkages and an additive that is a benzotriazole phenolate salt with substituents either ortho to the phenol hydroxide group and/or para to the phenol hydroxide group. The substituted benzotriazole phenolate salts 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.

公开(公告)号：US20180195000A1

公开(公告)日：2018-07-12

申请号：US15741680

申请日：2016-06-30

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Fuming B. Li ,  Kelly A. Volp ,  Mark McCormick

IPC: C09K15/32 ,  C08K5/00 ,  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.

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：US20210009811A1

公开(公告)日：2021-01-14

申请号：US16980145

申请日：2019-03-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Li Yao ,  Tien T. Wu ,  Gerry A. Hoffdahl ,  Jimmie R. Baran, JR.

IPC: C09C1/40 ,  C08K9/04 ,  C08K3/28

Abstract: A modified aluminum nitride particle comprises an aluminum nitride core and a shell surrounding the aluminum nitride core. The shell comprises a crosslinked organic polymer. Methods of making the modified aluminum nitride particle by admicellar polymerization are also disclosed.

公开(公告)号：US20210002137A1

公开(公告)日：2021-01-07

申请号：US16980175

申请日：2019-03-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Nathan E. Schultz ,  Mikhail A. Belkin ,  Gerry A. Hoffdahl ,  Jimmie R. Baran, JR. ,  Tien T. Wu

IPC: C01B21/064 ,  C07D249/18 ,  C08F220/36 ,  C08K9/08

Abstract: A charge-modified particle comprising the inorganic core and a shell surrounding the inorganic core, wherein the shell comprises a copolymer comprising monomeric units corresponding to free-radically polymerizable monomers, and wherein at least one of the monomeric units comprises a substituted benzotriazolylphenolate salt. Methods of making the charge-modified particle by admicellar polymerization are also disclosed.

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.

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.

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

IPC: D04H1/56 ,  D06M10/02 ,  B01D46/00 ,  D06M10/00 ,  D04H1/4291 ,  B01D39/16 ,  D06B1/02 ,  D06B5/08

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.