BR9912425A - Extruded thermoplastic foams useful in filtration applications and filtration method - Google Patents

Extruded thermoplastic foams useful in filtration applications and filtration method

Info

Publication number
BR9912425A
BR9912425A BR9912425-4A BR9912425A BR9912425A BR 9912425 A BR9912425 A BR 9912425A BR 9912425 A BR9912425 A BR 9912425A BR 9912425 A BR9912425 A BR 9912425A
Authority
BR
Brazil
Prior art keywords
filtration
extruded thermoplastic
foams useful
thermoplastic foams
cell
Prior art date
Application number
BR9912425-4A
Other languages
Portuguese (pt)
Inventor
David G Bland
Original Assignee
Dow Chemical Co
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 Dow Chemical Co filed Critical Dow Chemical Co
Publication of BR9912425A publication Critical patent/BR9912425A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • 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
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Filtering Materials (AREA)

Abstract

"ESPUMAS TERMOPLáSTICAS EXTRUDADAS úTEIS EM APLICAçõES DE FILTRAçãO E MéTODO DE FILTRAçãO". A presente invenção compreende um elemento de filtro, feito para ajustar-se dentro de um alojamento de elemento de filtro, compreendendo uma espuma termoplástica de células abertas tendo uma estrutura substancialmente de paredes celulares e apoios de células, um teor global de células abertas de cerca de 50 por cento ou mais, um tamanho médio de célula de cerca de 1,5 milímetro ou menos, e um coeficiente de permeabilidade de cerca de 6x10^ -13^ m² ou mais, e, opcionalmente, meios de retenção para a espuma."EXTRUDED THERMOPLASTIC FOAMS USEFUL IN FILTERING APPLICATIONS AND FILTERING METHODS". The present invention comprises a filter element, made to fit within a filter element housing, comprising an open cell thermoplastic foam having a structure substantially of cell walls and cell supports, an overall open cell content of about 50 percent or more, an average cell size of about 1.5 millimeter or less, and a permeability coefficient of about 6x10 ^ -13 ^ m² or more, and, optionally, retention means for the foam.

BR9912425-4A 1998-07-29 1999-07-02 Extruded thermoplastic foams useful in filtration applications and filtration method BR9912425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9450498P 1998-07-29 1998-07-29
PCT/US1999/015020 WO2000006284A1 (en) 1998-07-29 1999-07-02 Extruded thermoplastic foams useful in filtration applications

Publications (1)

Publication Number Publication Date
BR9912425A true BR9912425A (en) 2001-04-17

Family

ID=22245549

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9912425-4A BR9912425A (en) 1998-07-29 1999-07-02 Extruded thermoplastic foams useful in filtration applications and filtration method

Country Status (10)

Country Link
EP (1) EP1102618A1 (en)
JP (1) JP2002521188A (en)
KR (1) KR20010072094A (en)
CN (1) CN1306452A (en)
AR (1) AR019945A1 (en)
AU (1) AU4854399A (en)
BR (1) BR9912425A (en)
CA (1) CA2332815A1 (en)
TW (1) TW469156B (en)
WO (1) WO2000006284A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054273A1 (en) * 2005-11-11 2007-05-16 Freudenberg Carl Kg Filter element for removing different sized particles from flowing fluid, contains porous filter material(s) with locally increasing or decreasing pore size
EP3503992A4 (en) * 2016-08-26 2020-01-22 3M Innovative Properties Company Improved room air purifiers and filtration media

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841297B2 (en) * 1980-06-25 1983-09-10 旭化成株式会社 Polymer compositions for open cell foams
GB8709688D0 (en) * 1987-04-24 1987-05-28 Unilever Plc Porous material
DE4325879C3 (en) * 1993-08-02 1999-05-20 Depron Bv Film made of a thermoplastic foam, process for its production and its use
MX9708227A (en) * 1995-04-27 1997-12-31 Dow Chemical Co Extruded, open-cell microcellular foams, and their preparation process.

Also Published As

Publication number Publication date
TW469156B (en) 2001-12-21
AR019945A1 (en) 2002-03-27
EP1102618A1 (en) 2001-05-30
CN1306452A (en) 2001-08-01
KR20010072094A (en) 2001-07-31
WO2000006284A1 (en) 2000-02-10
AU4854399A (en) 2000-02-21
CA2332815A1 (en) 2000-02-10
JP2002521188A (en) 2002-07-16

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal acc. article 33 of ipl - extension of time limit for request of examination expired