WO2000000268A8 - Antimicrobial semi-permeable membranes - Google Patents

Antimicrobial semi-permeable membranes

Info

Publication number
WO2000000268A8
WO2000000268A8 PCT/US1999/014692 US9914692W WO0000268A8 WO 2000000268 A8 WO2000000268 A8 WO 2000000268A8 US 9914692 W US9914692 W US 9914692W WO 0000268 A8 WO0000268 A8 WO 0000268A8
Authority
WO
WIPO (PCT)
Prior art keywords
semi
permeable membranes
antimicrobial agent
polymeric material
membranes
Prior art date
Application number
PCT/US1999/014692
Other languages
French (fr)
Other versions
WO2000000268A1 (en
Inventor
Arvind S Patil
Original Assignee
Microban Products
Arvind S Patil
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 Microban Products, Arvind S Patil filed Critical Microban Products
Priority to AU48430/99A priority Critical patent/AU4843099A/en
Priority to DE69929697T priority patent/DE69929697T2/en
Priority to EP99932036A priority patent/EP1098691B1/en
Priority to CA002335886A priority patent/CA2335886C/en
Publication of WO2000000268A1 publication Critical patent/WO2000000268A1/en
Publication of WO2000000268A8 publication Critical patent/WO2000000268A8/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/02—Hollow fibre modules
    • B01D63/024—Hollow fibre modules with a single potted end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/10—Spiral-wound membrane modules
    • B01D63/107—Specific properties of the central tube or the permeate channel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • B01D71/16—Cellulose acetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/088—Arrangements for killing microorganisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/48—Antimicrobial properties

Abstract

Semi-permeable membranes made from synthetic polymers are treated with a non-leaching antimicrobial agent to prevent bio-fouling and bacterial breakthrough. The semi-permeable membranes include a polymeric material and a non-leaching antimicrobial agent that is incorporated into and homogeneously distributed throughout the polymeric material. In one embodiment, the polymeric material is cellulose acetate. In another embodiment, which utilizes thin film composite polyamide membranes (10), the antimicrobial agent is incorporated in a microporous polysulfone layer (14) that is sandwiched between a reinforcing fabric (16) and an ultrathin polyamide material (12). The invention also includes a treatment of flat and hollow fiber semi-permeable membranes made with polysulfones and polyvinylidene fluoride. The membranes may be used in reverse osmosis, ultrafiltration, and microfiltration applications.
PCT/US1999/014692 1998-06-29 1999-06-29 Antimicrobial semi-permeable membranes WO2000000268A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU48430/99A AU4843099A (en) 1998-06-29 1999-06-29 Antimicrobial semi-permeable membranes
DE69929697T DE69929697T2 (en) 1998-06-29 1999-06-29 ANTI-MICROBIAL SEMIPERMEABLE MEMBRANE
EP99932036A EP1098691B1 (en) 1998-06-29 1999-06-29 Antimicrobial semi-permeable membranes
CA002335886A CA2335886C (en) 1998-06-29 1999-06-29 Antimicrobial semi-permeable membranes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US9099698P 1998-06-29 1998-06-29
US60/090,996 1998-06-29
US34277999A 1999-06-29 1999-06-29
US09/342,779 1999-06-29

Publications (2)

Publication Number Publication Date
WO2000000268A1 WO2000000268A1 (en) 2000-01-06
WO2000000268A8 true WO2000000268A8 (en) 2000-10-12

Family

ID=26782862

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014692 WO2000000268A1 (en) 1998-06-29 1999-06-29 Antimicrobial semi-permeable membranes

Country Status (8)

Country Link
US (1) US6540915B2 (en)
EP (1) EP1098691B1 (en)
CN (1) CN1238086C (en)
AT (1) ATE316814T1 (en)
CA (1) CA2335886C (en)
DE (1) DE69929697T2 (en)
ES (1) ES2258335T3 (en)
WO (1) WO2000000268A1 (en)

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Also Published As

Publication number Publication date
ES2258335T3 (en) 2006-08-16
DE69929697D1 (en) 2006-04-13
DE69929697T2 (en) 2006-10-19
EP1098691A4 (en) 2001-08-16
EP1098691B1 (en) 2006-02-01
US20030038074A1 (en) 2003-02-27
EP1098691A1 (en) 2001-05-16
WO2000000268A1 (en) 2000-01-06
CA2335886C (en) 2004-04-13
ATE316814T1 (en) 2006-02-15
CA2335886A1 (en) 2000-01-06
CN1310638A (en) 2001-08-29
US6540915B2 (en) 2003-04-01
CN1238086C (en) 2006-01-25

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