BR112021020488A2 - Filter media comprising polyamide nanofiber layer - Google Patents

Filter media comprising polyamide nanofiber layer

Info

Publication number
BR112021020488A2
BR112021020488A2 BR112021020488A BR112021020488A BR112021020488A2 BR 112021020488 A2 BR112021020488 A2 BR 112021020488A2 BR 112021020488 A BR112021020488 A BR 112021020488A BR 112021020488 A BR112021020488 A BR 112021020488A BR 112021020488 A2 BR112021020488 A2 BR 112021020488A2
Authority
BR
Brazil
Prior art keywords
polyamide
layer
filter media
polyamide nanofiber
nanofiber layer
Prior art date
Application number
BR112021020488A
Other languages
Portuguese (pt)
Inventor
E Ortega Albert
L Menner Joseph
E Osborn Scott
Wai-Shing Yung
Original Assignee
Ascend Performance Mat Operations Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ascend Performance Mat Operations Llc filed Critical Ascend Performance Mat Operations Llc
Publication of BR112021020488A2 publication Critical patent/BR112021020488A2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/0604—Arrangement of the fibres in the filtering material
    • B01D2239/0622—Melt-blown
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0654—Support layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1258—Permeability

Abstract

meio filtrante compreendendo camada de nanofibra de poliamida. a presente invenção refere-se ao meio filtrante que compreende uma camada de nanofibra de poliamida. a poliamida pode ter uma viscosidade relativa de 2 a 200. a camada de nanofibra de poliamida pode ter um ponto de fusão de 225°c ou superior. as nanofibras podem ter um diâmetro de fibra médio menor que 1000 nanômetros (1 mícron). métodos para preparar o meio filtrante também são descritos. em geral, o método inclui: (a) fornecer uma composição polímera de poliamida fiável, em que a poliamida tem uma viscosidade relativa de 2 a 200; (b) fiar por fusão a composição polímera de poliamida em uma pluralidade de nanofibras tendo um diâmetro de fibra médio menor que 1 mícron, seguido por (c) formar uma camada de nanofibra de poliamida.filter media comprising a polyamide nanofiber layer. the present invention relates to a filter medium that comprises a layer of polyamide nanofiber. the polyamide may have a relative viscosity of 2 to 200. the polyamide nanofiber layer may have a melting point of 225°C or higher. nanofibers can have an average fiber diameter of less than 1000 nanometers (1 micron). methods for preparing the filter medium are also described. in general, the method includes: (a) providing a reliable polyamide polymer composition, wherein the polyamide has a relative viscosity of from 2 to 200; (b) melt spinning the polyamide polymer composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming a layer of polyamide nanofiber.

BR112021020488A 2019-05-01 2020-05-01 Filter media comprising polyamide nanofiber layer BR112021020488A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962841485P 2019-05-01 2019-05-01
PCT/US2020/031038 WO2020223638A1 (en) 2019-05-01 2020-05-01 Filter media comprising polyamide nanofiber layer

Publications (1)

Publication Number Publication Date
BR112021020488A2 true BR112021020488A2 (en) 2022-02-15

Family

ID=70802948

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112021020488A BR112021020488A2 (en) 2019-05-01 2020-05-01 Filter media comprising polyamide nanofiber layer

Country Status (9)

Country Link
EP (1) EP3962626A1 (en)
JP (1) JP7340037B2 (en)
KR (1) KR20210153137A (en)
CN (1) CN113710344A (en)
BR (1) BR112021020488A2 (en)
CA (1) CA3138150C (en)
MX (1) MX2021013375A (en)
TW (1) TWI758722B (en)
WO (1) WO2020223638A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018103682A1 (en) * 2018-02-19 2019-08-22 Twe Gmbh & Co. Kg filter media
RU205640U1 (en) * 2020-12-03 2021-07-26 Ольга Александровна Лещинская ELECTROSTATIC FILTER
CN114713051B (en) * 2022-03-28 2023-06-27 金发科技股份有限公司 Polyamide film, preparation method and application of photo-repairing polyamide film
CN114889252B (en) * 2022-04-29 2023-04-04 广东埃力生科技股份有限公司 Aerogel-bi-component needled fiber felt composite material and preparation method and application thereof
CN115487586A (en) * 2022-09-19 2022-12-20 上海聚蓝水处理科技有限公司 Crystal film composite filter element
CN115487587A (en) * 2022-09-20 2022-12-20 上海聚蓝水处理科技有限公司 Activated carbon particle interlayer filter element

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Also Published As

Publication number Publication date
JP7340037B2 (en) 2023-09-06
CA3138150C (en) 2023-09-19
JP2022530806A (en) 2022-07-01
TW202110520A (en) 2021-03-16
KR20210153137A (en) 2021-12-16
CA3138150A1 (en) 2020-11-05
EP3962626A1 (en) 2022-03-09
MX2021013375A (en) 2021-11-25
TWI758722B (en) 2022-03-21
WO2020223638A1 (en) 2020-11-05
CN113710344A (en) 2021-11-26

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