CA2404816A1 - Biostatic filter - Google Patents

Biostatic filter Download PDF

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Publication number
CA2404816A1
CA2404816A1 CA002404816A CA2404816A CA2404816A1 CA 2404816 A1 CA2404816 A1 CA 2404816A1 CA 002404816 A CA002404816 A CA 002404816A CA 2404816 A CA2404816 A CA 2404816A CA 2404816 A1 CA2404816 A1 CA 2404816A1
Authority
CA
Canada
Prior art keywords
filter
composition according
agent
filtrate
biocidal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002404816A
Other languages
French (fr)
Other versions
CA2404816C (en
Inventor
Steven Kritzler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novapharm Research Australia Pty Ltd
Original Assignee
Novapharm Research (Australia) Pty Ltd.
Steven Kritzler
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 Novapharm Research (Australia) Pty Ltd., Steven Kritzler filed Critical Novapharm Research (Australia) Pty Ltd.
Publication of CA2404816A1 publication Critical patent/CA2404816A1/en
Application granted granted Critical
Publication of CA2404816C publication Critical patent/CA2404816C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B01D39/04—Organic material, e.g. cellulose, cotton
    • 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
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning

Abstract

The invention relates to an air filter including a composition which has a biostatic or biocidal agent adapted to migrate through particulates accumulating in use on the filter. The biocidal agent may have bacteriostatic and/or fungistatic properties and may optionally include a humectant, a surfactant or rheological additive. The invention also relates to compositions for treating filters and a method of reducing airborne contaminants in air.

Claims (20)

1. An air filter including a composition, said composition including a biostatic or biocidal agent wherein the agent is adapted to migrate through particulates accumulating in use on the filter.
2. An air filter according to claim 1 wherein the biostatic or biocidal agent is selected to have bacteriostatic and/or fungistatic properties.
3. An air filter according to claim 1 or 2 which after 3 months in normal use produces at least log 1 reduction in cfu's /gram of clean filter material in comparison with an untreated filter under the same conditions.
4. A composition for application to an air filter, said composition including:

- a water soluble biocidal or biostatic agent, - and a humectant whereby the biocidal or biostatic agent is adapted to migrate through a filtrate accumulating, in use, on a surface of the air filter.
5. A composition according to claim 4 further including a surfactant.
6. A composition according to claim 4 further including a fluorosurfactant.
7. A composition according to any one of claims 4 to 6 further including one or more rheological additives.
8. A composition according to claim 7 wherein a rheological additive is a thickening agent, a gelling agent, or a viscosity modifier.
9. A composition according to any one of claims 4 to 8 wherein the biocidal or biostatic agent is selected from 2-bromo-2-nitropropane-1,3-diol, isothiazolines, methyl or propyl or butyl parahydroxybenzoates; sorbic acid, benzoic acid and salts of these acids, phenoxy ethanol; triclosan; diclosan; dichlorophen; chlorhexidine gluconate, orthophenylphenol; quaternary biocides, orthobenzylparachlorophenol, and substituted diphenyl ethers.
10. A composition according to any one of claims 4 to 9 wherein the agent is 2-bromo-2-nitropropane-1,3-diol.
11. A composition according to any one of claims 4 to 1 U wherein the humectant is selected from calcium chloride, glycerol, sorbitol, ethylene glycol, PEG, propylene glycol, 1,3 butylene glycol, PCA (2-Pyrrolidone-5-carboxylic acid), sodium sulphate, sodium hydroxide, lactic acid and derivatives thereof, sodium chloride and sodium dioctylsulphosuccinate.
12. A composition according to any one of claims 4 to 11 wherein the humectant is calcium chloride.
13. A composition according to claim 7 wherein a rheological additive is one or more compound selected from sodium carboxymethylcellulose; hydroxyethylcellulose;
hydroxypropylcellulose; polyethylene glycols; polypropylene glycols; polyvinyl alcohol;
polyvinyl acetate, polyvinylpyrrolidone and copolymers of these, hydroxypropyl guar, xanthan gum, chitosan,.acrylated copolymers, polyacrylic polymers (carbopols) and water soluble polymers
14. A composition according to any one of claims 4 to 13 wherein a rheological additive is vinyl ether/maleic anhydride copolymer.
15. A composition according to any one of claims 4 to 14 substantially as herein described.
16. A filter when treated with a composition according to any one of claims 4 to 15
17. A method of treating a filtrate on a filter including the step of adding to the filter or to the filtrate a biocidal or biostatic agent adapted to migrate through the filtrate.
18. A method of reducing airborne contaminants in air including the steps of:

treating a filter with a composition according to any one of claims 4 to 15;
passing air through the filter whereby to accumulate contaminants as a filtrate on the filter; and allowing the biocide to migrate into the filtrate.
19. A method of reducing airborne contaminants in air including the step of:
treating a filter with an biocidal or biostatic agent;
passing air through the filter whereby to accumulate contaminants as a filtrate on the filter; and allowing the biocide to migrate throughout the filtrate.
20. A method according to any one of claim 17s to 19 and substantially as herein described with reference to any one of the examples.
CA2404816A 2000-03-29 2001-03-27 Biostatic filter Expired - Fee Related CA2404816C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPQ6563A AUPQ656300A0 (en) 2000-03-29 2000-03-29 Biostatic filter
AUPQ6563 2000-03-29
PCT/AU2001/000339 WO2001073356A1 (en) 2000-03-29 2001-03-27 Biostatic filter

Publications (2)

Publication Number Publication Date
CA2404816A1 true CA2404816A1 (en) 2001-10-04
CA2404816C CA2404816C (en) 2011-07-12

Family

ID=3820659

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2404816A Expired - Fee Related CA2404816C (en) 2000-03-29 2001-03-27 Biostatic filter

Country Status (20)

Country Link
US (1) US6802891B2 (en)
EP (1) EP1269088B1 (en)
JP (2) JP4846164B2 (en)
KR (1) KR100903715B1 (en)
CN (1) CN1186569C (en)
AR (1) AR027729A1 (en)
AT (1) ATE331190T1 (en)
AU (1) AUPQ656300A0 (en)
CA (1) CA2404816C (en)
DE (1) DE60120943T2 (en)
DK (1) DK1269088T3 (en)
ES (1) ES2269362T3 (en)
IL (1) IL151975A (en)
MX (1) MXPA02009500A (en)
MY (1) MY124876A (en)
NZ (1) NZ521751A (en)
PT (1) PT1269088E (en)
TW (1) TW531443B (en)
WO (1) WO2001073356A1 (en)
ZA (1) ZA200207791B (en)

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AUPQ656300A0 (en) * 2000-03-29 2000-04-20 Novapharm Research (Australia) Pty Ltd Biostatic filter
US20030075047A1 (en) * 2001-10-22 2003-04-24 Normand Bolduc Bactericidal after-filter device
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US20070012186A1 (en) * 2005-03-11 2007-01-18 Wilson Todd S System and method of dehumidifying and filtering air
WO2006113967A1 (en) * 2005-04-27 2006-11-02 Novapharm Research (Australia) Pty Ltd Biostatic filter and water insoluble biocide formulation therefor
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US20090188860A1 (en) * 2006-07-05 2009-07-30 Matthias Hofmann-Kamensky Use of antimicrobials in water technology
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WO2011088185A2 (en) 2010-01-18 2011-07-21 3M Innovative Properties Company Air filter with sorbent particles
DE102010049425A1 (en) * 2010-10-23 2012-04-26 Gea Heat Exchangers Gmbh Nonwoven storage filter, useful for general room and process air technology, preferably for bag filters of air conditioners, comprises fibers of polyolefin and/or polyester
DE102011104628A1 (en) 2011-06-06 2012-12-06 Mann + Hummel Gmbh Antimicrobial filter medium and filter module
US9756860B2 (en) * 2011-12-01 2017-09-12 Rohm And Haas Company Antimicrobial composition of ortho phenylphenol and silver
CN105013252B (en) * 2014-04-16 2016-08-24 黄山城市绿洲空气过滤器科技有限公司 A kind of coating and the application in air filtration thereof
CN115006916A (en) * 2014-04-30 2022-09-06 K&N工程公司 Filter oil formulation
WO2017040283A1 (en) 2015-08-28 2017-03-09 Serionix, Inc. Gas filters for basic contaminants
US10639588B2 (en) 2015-08-28 2020-05-05 Serionix, Inc. Gas filters for acidic contaminants
US10299473B2 (en) 2017-04-28 2019-05-28 American Sterilizer Company Low pH phenolic disinfectant without para tertiary amylphenol
CN108889034A (en) * 2018-07-27 2018-11-27 杭州和山科技有限公司 A kind of water pump sterilized filtering layer and its manufacturing process
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Also Published As

Publication number Publication date
AR027729A1 (en) 2003-04-09
EP1269088A1 (en) 2003-01-02
IL151975A (en) 2005-07-25
KR20030007487A (en) 2003-01-23
JP2011218355A (en) 2011-11-04
TW531443B (en) 2003-05-11
ES2269362T3 (en) 2007-04-01
WO2001073356A1 (en) 2001-10-04
EP1269088A4 (en) 2003-05-28
DK1269088T3 (en) 2006-10-30
KR100903715B1 (en) 2009-06-19
AUPQ656300A0 (en) 2000-04-20
US6802891B2 (en) 2004-10-12
IL151975A0 (en) 2003-04-10
CN1186569C (en) 2005-01-26
ZA200207791B (en) 2003-05-09
JP4846164B2 (en) 2011-12-28
ATE331190T1 (en) 2006-07-15
PT1269088E (en) 2006-11-30
CN1427937A (en) 2003-07-02
DE60120943T2 (en) 2007-02-15
JP5613623B2 (en) 2014-10-29
EP1269088B1 (en) 2006-06-21
MXPA02009500A (en) 2004-07-30
CA2404816C (en) 2011-07-12
NZ521751A (en) 2004-06-25
MY124876A (en) 2006-07-31
DE60120943D1 (en) 2006-08-03
JP2003529041A (en) 2003-09-30
US20030116022A1 (en) 2003-06-26

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Effective date: 20140327