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    FILTER MEDIA STRUCTURES
    1.
    发明申请
    FILTER MEDIA STRUCTURES 审中-公开

    公开(公告)号：WO2022040578A1

    公开(公告)日：2022-02-24

    申请号：PCT/US2021/046981

    申请日：2021-08-20

    Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

    Inventor： GOPAL, Vikram ,  DEAN, Natasha ,  ORTEGA, Albert ,  YUNG, Wai-shing ,  HAO, Ping

    IPC: B01D39/16

    Abstract: Provided herein are filter media structures having antimicrobial and/or antiviral properties. In particular, the present disclosure describes filter media structures having a first layer with an electret web and a second layer that demonstrates biological-reducing properties. In some cases, the first layer is formed from polypropylene (e.g., spunbond) and the second layer is formed from a plurality of fibers of a polyamide composition (e.g., meltblown).

    FILTERS AND FACEMASKS HAVING ANTIMICROBIAL OR ANTIVIRAL PROPERTIES
    4.
    发明申请
    FILTERS AND FACEMASKS HAVING ANTIMICROBIAL OR ANTIVIRAL PROPERTIES 审中-公开

    公开(公告)号：WO2021216540A1

    公开(公告)日：2021-10-28

    申请号：PCT/US2021/028139

    申请日：2021-04-20

    Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

    Inventor： GOPAL, Vikram ,  YUNG, Wai-Shing ,  DEAN, Natasha ,  ORTEGA, Albert

    IPC: B01D39/16 ,  A41D13/11 ,  A62B23/02

    Abstract: A filter or mask structure, comprising a first face layer comprising a polymer and having a face basis weight, a second outer layer comprising a polymer and having an outer basis weight less than 34 gsm, and a third outer layer comprising a polymer and having a third basis weight and disposed between the first face layer and the second outer layer. At least one of the layers further comprises an AM/AV compound. The mask structure demonstrates an Escherichia coli efficacy log reduction greater than 4.0, as measured in accordance with ASTM E3160 (2018) and a particulate filtration efficiency greater than 90%, as measured in accordance with ASTM F2299-03R17.

    ANTIVIRAL ARTICLES
    5.
    发明申请
    ANTIVIRAL ARTICLES 审中-公开

    公开(公告)号：WO2021178681A1

    公开(公告)日：2021-09-10

    申请号：PCT/US2021/020897

    申请日：2021-03-04

    Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

    Inventor： GOPAL, Vikram ,  YUNG, Wai-Shing ,  ORTEGA, Albert

    IPC: A01N59/16 ,  A01N59/20 ,  C08K3/015 ,  C08K3/10 ,  A01N25/10 ,  A01N25/34 ,  A01P1/00

    Abstract: Provided is a textile made of filament yarn comprising a polymer composition that is durable and reusable having permanent or near-permanent antiviral properties and that includes a polymer, a metal ion, preferably a zinc and/or copper ion, and an optional phosphorus compound, wherein fibers and/or fabric formed from the polymer composition demonstrate antiviral properties and wherein the polymer is hygroscopic. The present disclosure also describes methods of forming the polymer compositions and methods of preparing fibers from the polymer composition.

    POLYAMIDE NANOFIBER NONWOVENS
    7.
    发明申请
    POLYAMIDE NANOFIBER NONWOVENS 审中-公开

    公开(公告)号：WO2018227069A1

    公开(公告)日：2018-12-13

    申请号：PCT/US2018/036637

    申请日：2018-06-08

    Applicant: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC

    Inventor： YUNG, Wai-Shing ,  OSBORN, Scott ,  SCHWIER, Chris ,  GOPAL, Vikram ,  ORTEGA, Albert

    IPC: D04H1/4334

    Abstract: A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.

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