WO2001007144A8 - Plasma treated electret filter media - Google Patents

Plasma treated electret filter media Download PDF

Info

Publication number
WO2001007144A8
WO2001007144A8 PCT/US2000/019279 US0019279W WO0107144A8 WO 2001007144 A8 WO2001007144 A8 WO 2001007144A8 US 0019279 W US0019279 W US 0019279W WO 0107144 A8 WO0107144 A8 WO 0107144A8
Authority
WO
WIPO (PCT)
Prior art keywords
filter media
electret filter
plasma treated
mixtures
treated electret
Prior art date
Application number
PCT/US2000/019279
Other languages
French (fr)
Other versions
WO2001007144A1 (en
WO2001007144A2 (en
Inventor
Richard E Gahan
Original Assignee
Hollingsworth & Vose Co
Richard E Gahan
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 Hollingsworth & Vose Co, Richard E Gahan filed Critical Hollingsworth & Vose Co
Priority to AU61006/00A priority Critical patent/AU6100600A/en
Priority to EP00947386A priority patent/EP1202789A2/en
Priority to JP2001512017A priority patent/JP2003505229A/en
Priority to CA002375744A priority patent/CA2375744A1/en
Publication of WO2001007144A1 publication Critical patent/WO2001007144A1/en
Publication of WO2001007144A2 publication Critical patent/WO2001007144A2/en
Publication of WO2001007144A8 publication Critical patent/WO2001007144A8/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Electrostatic Separation (AREA)

Abstract

An electret filter media includes an additive or mixtures thereof that enhance the charge stability of the media. The filter media achieves acceptable alpha values for a range of filtration challenges without significant decay in alpha values over time. Preferred charge additives include fatty acid amides and mixtures thereof.
PCT/US2000/019279 1999-07-21 2000-07-14 Plasma treated electret filter media WO2001007144A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU61006/00A AU6100600A (en) 1999-07-21 2000-07-14 Plasma treated electret filter media
EP00947386A EP1202789A2 (en) 1999-07-21 2000-07-14 Plasma treated electret filter media
JP2001512017A JP2003505229A (en) 1999-07-21 2000-07-14 Electret filter media with plasma treatment
CA002375744A CA2375744A1 (en) 1999-07-21 2000-07-14 Plasma treated electret filter media

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35934899A 1999-07-21 1999-07-21
US09/359,348 1999-07-21

Publications (3)

Publication Number Publication Date
WO2001007144A1 WO2001007144A1 (en) 2001-02-01
WO2001007144A2 WO2001007144A2 (en) 2001-02-01
WO2001007144A8 true WO2001007144A8 (en) 2001-06-21

Family

ID=23413443

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/019279 WO2001007144A2 (en) 1999-07-21 2000-07-14 Plasma treated electret filter media

Country Status (5)

Country Link
EP (1) EP1202789A2 (en)
JP (1) JP2003505229A (en)
AU (1) AU6100600A (en)
CA (1) CA2375744A1 (en)
WO (1) WO2001007144A2 (en)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6802315B2 (en) * 2001-03-21 2004-10-12 Hollingsorth & Vose Company Vapor deposition treated electret filter media
US20030054716A1 (en) * 2001-09-07 2003-03-20 3M Innovative Properties Company Method of making an electret
US6878419B2 (en) 2001-12-14 2005-04-12 3M Innovative Properties Co. Plasma treatment of porous materials
US7887889B2 (en) 2001-12-14 2011-02-15 3M Innovative Properties Company Plasma fluorination treatment of porous materials
US20050006303A1 (en) * 2003-07-11 2005-01-13 Sanders Robert G. Atmospheric plasma treatment of meltblown fibers used in filtration
US20060047311A1 (en) * 2004-08-26 2006-03-02 Lutz David I Expanded PTFE articles and method of making same
US7244292B2 (en) 2005-05-02 2007-07-17 3M Innovative Properties Company Electret article having heteroatoms and low fluorosaturation ratio
US7244291B2 (en) 2005-05-02 2007-07-17 3M Innovative Properties Company Electret article having high fluorosaturation ratio
US7765698B2 (en) 2008-06-02 2010-08-03 3M Innovative Properties Company Method of making electret articles based on zeta potential
GB0810326D0 (en) * 2008-06-06 2008-07-09 P2I Ltd Filtration media
WO2010114742A2 (en) 2009-04-03 2010-10-07 3M Innovative Properties Company Electret webs with charge-enhancing additives
PL2414576T3 (en) 2009-04-03 2017-05-31 3M Innovative Properties Company Processing aids for webs, including electret webs
US20100252047A1 (en) 2009-04-03 2010-10-07 Kirk Seth M Remote fluorination of fibrous filter webs
EP2569474A2 (en) * 2010-05-12 2013-03-20 Christopher M. Pavlos Method for producing improved feathers and improved feathers thereto
US8852693B2 (en) 2011-05-19 2014-10-07 Liquipel Ip Llc Coated electronic devices and associated methods
EP2938420B1 (en) 2012-12-28 2018-03-07 3M Innovative Properties Company Electret webs with charge-enhancing additives
ES2638777T3 (en) 2013-04-19 2017-10-24 3M Innovative Properties Company Electret bands with load enhancing additives
US10265653B2 (en) * 2014-02-28 2019-04-23 3M Innovative Properties Company Filtration medium including polymeric netting of ribbons and strands
JP2015200058A (en) * 2014-04-04 2015-11-12 東洋紡株式会社 electret
ES2674802T3 (en) 2014-06-23 2018-07-04 3M Innovative Properties Company Electret bands with load enhancing additives
BR112018000412A2 (en) 2015-07-07 2018-09-11 3M Innovative Properties Co benzotriazole substituted phenols
BR112018000381A2 (en) 2015-07-07 2018-09-11 3M Innovative Properties Company substituted benzotriazole phenolate salts and antioxidant compositions formed from them
EP3320038A1 (en) 2015-07-07 2018-05-16 3M Innovative Properties Company Polymeric matrices with ionic additives
CN108136298B (en) * 2015-10-02 2020-08-28 东洋纺株式会社 Electret and electret filter material
US10898838B2 (en) 2016-12-15 2021-01-26 Hollingsworth & Vose Company Filter media including adhesives
US10543441B2 (en) 2016-12-15 2020-01-28 Hollingsworth & Vose Company Filter media including adhesives and/or oleophobic properties
JP7076718B2 (en) 2017-01-05 2022-05-30 スリーエム イノベイティブ プロパティズ カンパニー Electret web with charge-enhancing additives
WO2018183481A1 (en) * 2017-03-28 2018-10-04 Hollingsworth & Vose Company Filter media including adhesives and/or oleophobic properties
CN114555691B (en) 2019-10-16 2023-11-28 3M创新有限公司 Substituted benzimidazole melt additives
EP4045167A1 (en) 2019-10-16 2022-08-24 3M Innovative Properties Company Dual-function melt additives
WO2021111290A1 (en) 2019-12-03 2021-06-10 3M Innovative Properties Company Aromatic-heterocyclic ring melt additives
EP4069898B1 (en) 2019-12-03 2023-06-21 3M Innovative Properties Company Thiolate salt melt additives
CN115427622B (en) 2020-01-27 2023-09-15 3M创新有限公司 Substituted thiolate melt additives
US11982031B2 (en) 2020-01-27 2024-05-14 3M Innovative Properties Company Substituted thiol melt additives
EP4176116A1 (en) 2020-08-11 2023-05-10 3M Innovative Properties Company Electret webs with benzoate salt charge-enhancing additives
US20230311038A1 (en) 2020-08-11 2023-10-05 3M Innovative Properties Company Electret webs with carboxylic acid or carboxylate salt charge-enhancing additives
US20230390678A1 (en) 2020-11-02 2023-12-07 3M Innovative Properties Company Core-sheath fibers, nonwoven fibrous web, and filtering articles including the same
US20240009606A1 (en) 2020-12-18 2024-01-11 3M Innovative Properties Company Electrets comprising a substituted cyclotriphosphazene compound and articles therefrom

Also Published As

Publication number Publication date
EP1202789A2 (en) 2002-05-08
AU6100600A (en) 2001-02-13
JP2003505229A (en) 2003-02-12
CA2375744A1 (en) 2001-02-01
WO2001007144A2 (en) 2001-02-01

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