Filtration medium

Details Filtration medium Filtration medium

1995-09-12

1998-08-04

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210490, 21050038, 21050041, 21050035, 21050036, 264 4, 264 49, B01D 6100

Patent

active

057888620

ABSTRACT:
The present invention provides a filtration medium comprising an ultrafiltration membrane and a monomer surface coating thereon of an acrylic or methacrylic acid monomer having alcohol functional groups, wherein the filtration medium after having been fully dried is characterized by having a titer reduction of at least about 10.sup.3 with respect to PP7 bacteriophage and a critical wetting surface tension of at least about 70 mN/m. The filtration medium preferably further comprises a fibrous nonwoven web embedded in the membrane. The present invention also provides a method of filtering a fluid through the present inventive filtration medium, as well as a method of preparing such a filtration medium.

REFERENCES:
patent: 3615024 (1971-10-01), Michaels
patent: 3691068 (1972-09-01), Cross
patent: 3931123 (1976-01-01), Vacik et al.
patent: 3939049 (1976-02-01), Ratner et al.
patent: 3945900 (1976-03-01), Klinkowski
patent: 3977967 (1976-08-01), Trulson et al.
patent: 3994860 (1976-11-01), Brousse
patent: 4026977 (1977-05-01), Bourganel
patent: 4033822 (1977-07-01), Gregor
patent: 4035459 (1977-07-01), Kesting et al.
patent: 4060488 (1977-11-01), Hoover et al.
patent: 4134837 (1979-01-01), Yamashita et al.
patent: 4177150 (1979-12-01), Inoue et al.
patent: 4203847 (1980-05-01), Grandine
patent: 4207182 (1980-06-01), Marze
patent: 4208508 (1980-06-01), Hashino et al.
patent: 4320009 (1982-03-01), Hilton et al.
patent: 4340479 (1982-07-01), Pall
patent: 4358378 (1982-11-01), Iwama et al.
patent: 4439322 (1984-03-01), Sonoda et al.
patent: 4451424 (1984-05-01), Tweedle et al.
patent: 4473474 (1984-09-01), Ostreicher et al.
patent: 4481260 (1984-11-01), Nohmi
patent: 4618533 (1986-10-01), Steuck
patent: 4672113 (1987-06-01), Wallisch et al.
patent: 4810384 (1989-03-01), Fabre
patent: 4814082 (1989-03-01), Wrasidlo
patent: 4816252 (1989-03-01), Stott et al.
patent: 4822489 (1989-04-01), Nohmi et al.
patent: 4857201 (1989-08-01), Black et al.
patent: 4871494 (1989-10-01), Kesting et al.
patent: 4880441 (1989-11-01), Kesting et al.
patent: 4902422 (1990-02-01), Pinnau et al.
patent: 4902424 (1990-02-01), Wrasidlo
patent: 4906375 (1990-03-01), Heilmann
patent: 4908267 (1990-03-01), Kohn
patent: 4954381 (1990-09-01), Cabasso et al.
patent: 4968733 (1990-11-01), Muller et al.
patent: 4976859 (1990-12-01), Wechs
patent: 4990252 (1991-02-01), Tomaschke et al.
patent: 4992221 (1991-02-01), Malon et al.
patent: 4992485 (1991-02-01), Koo et al.
patent: 4997565 (1991-03-01), Niesen
patent: 5017292 (1991-05-01), DiLeo et al.
patent: 5022990 (1991-06-01), Doi et al.
patent: 5069945 (1991-12-01), Wrasidlo
patent: 5076935 (1991-12-01), Kraus et al.
patent: 5212000 (1993-05-01), Rose et al.
patent: 5433859 (1995-07-01), Degen
patent: 5468390 (1995-11-01), Crivello et al.
patent: 5480554 (1996-01-01), Degen et al.
Philip A. Schweitzer, Handbook of Separation Techniques for Chemical Engineers, pp. 2-9-2-17.
Kirk-Otmer Encyclopedia of Chemical Technology (3.sup.rd Edition), vol. 23, pp. 439-440.
Merrill et al., ASAIO J., 6, 60-64 (1983).
Miyano et al., J. Appl. Polym. Sci., 41, 407-417 (1990).
Passlack et al., Die Angewandte Makromolekulare Chemie, 139(2280), 175-189 (1986).
Philips Abstract on "Novel Liquid-Porosmetric Integrity for Correlating Virus Retention" (date unknown).
Ray et al., J. Membrane Sci., 23, 155-182 (1985).
Technical Bulletin, "Ultrafiltration and Microfiltration--Hollow Fiber Membranes", A/G Technology Corporation (date unknown).
Tsay et al., J. Polym. Sci., Part B, 1327-1365 (1990).
Tweedle et al., Ind. Eng. Chem. Prod. Res. Dev., 22, 320-326 (1983).
Capannelli et al., Characterization of Porous Solids, Unger et al., eds., Elsevier Science Publishers B.V., Amsterdam, 283-293 (1988).
Capannelli et al., Journal of Membrane Science, 15, 289-313 (1983).
Chen et al., J. Membrane Sci., 48, 203-19 (1990).
Database WPI, Derwent Publications Ltd., 83-28523K/12 (JP58024305 abstract) (Feb. 14, 1983).
Database WPI, Derwent Publications Ltd., 83-773589/39 (JP58139702 abstract) (Aug. 19, 1983).
Database WPI, Derwent Publications Ltd., 84-099899 (SU1028687 abstract) (Jul. 15, 1983).
Database WPI, Derwent Publications Ltd., 86-167043/26 (JP61101204 abstract) (May 20, 1986).
Database WPI, Derwent Publications Ltd., 89-181842/25 (JP1119308 abstract) (May 11, 1989).
Database WPI, Derwent Publications Ltd., 89-215629/30 (JP1151922 abstract) (Jun. 14, 1989).
Database WPI, Derwent Publications Ltd., 90-048948/07 (JP2002862 abstract) (Jan. 8, 1990).
Database WPI, Derwent Publications Ltd., 90-069979/10 (JP2021560 abstract) (Jan. 24, 1990).
DiLeo et al., Nature, 351, 420-421 (1991).
Doi et al., Desalination, 80, 167-180 (1991).
Erbe, Kolloindnyj Zurnel, 277-285 (1933).
Hampl et al., Collection Czechoslov. Chem. Commun., 32, 4181-4189 (1967).
Kleper, BioPharm, 13, (Nov./Dec. 1990).
Lafrenier et al., Ind. Eng. Chem. Prod. Res., 26(11), 2385 (1987).
Anderson et al., Science, 252, 1412-1414 (1991).
Kirk-Othmer Encyclopedia of Chemical Technology (3rd ed.), vol. 23, pp. 439-461 ("Ultrafiltration") (1983).
Kesting, J. Applied Polymer Science, 41, 2739-52 (1990).

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