CA2176277A1 - Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water - Google Patents

Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water

Info

Publication number
CA2176277A1
CA2176277A1 CA002176277A CA2176277A CA2176277A1 CA 2176277 A1 CA2176277 A1 CA 2176277A1 CA 002176277 A CA002176277 A CA 002176277A CA 2176277 A CA2176277 A CA 2176277A CA 2176277 A1 CA2176277 A1 CA 2176277A1
Authority
CA
Canada
Prior art keywords
hydrogen
aldehyde
dioxolane
hydrophobic
residue
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
CA002176277A
Other languages
French (fr)
Other versions
CA2176277C (en
Inventor
Denise Christine Galante
Richard Charles Hoy
Albert Ferris Joseph
Stephen Wayne King
Charles Arnold Smith
Cheryl Marie Wizda
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.)
Union Carbide Chemicals and Plastics Technology LLC
Original Assignee
Union Carbide Chemicals and Plastics Technology LLC
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 Union Carbide Chemicals and Plastics Technology LLC filed Critical Union Carbide Chemicals and Plastics Technology LLC
Publication of CA2176277A1 publication Critical patent/CA2176277A1/en
Application granted granted Critical
Publication of CA2176277C publication Critical patent/CA2176277C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D17/00Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02Separation of non-miscible liquids
    • B01D17/04Breaking emulsions
    • B01D17/047Breaking emulsions with separation aids
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/017Mixtures of compounds
    • C09K23/018Mixtures of two or more different organic oxygen-containing compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/547Tensides
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
    • C08G65/2603Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
    • C08G65/2606Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K23/00Use of substances as emulsifying, wetting, dispersing, or foam-producing agents
    • C09K23/42Ethers, e.g. polyglycol ethers of alcohols or phenols
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/72Ethers of polyoxyalkylene glycols
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/825Mixtures of compounds all of which are non-ionic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2650/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G2650/28Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
    • C08G2650/38Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group
    • C08G2650/44Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group containing acetal or formal groups
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/72Ethers of polyoxyalkylene glycols
    • C11D1/721End blocked ethers
    • C11D2111/12
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00Liquid purification or separation
    • Y10S210/902Materials removed
    • Y10S210/908Organic

Abstract

A nonionic surfactant having cyclic 1,3-dioxane and/or 1,3-dioxolane functionality is irreversibly splittable by lowering the pH of its aqueous solution. The cyclic 1,3-dioxolane has the formula:

(see figure I) The 1,3-dioxolane has the formula:

(see figure II) of which R is hydrogen and R' has no alkoxy linkage and is the residue of an organic compound (substituted or unsubstituted) derived from an aldehyde of the formula (see figure III) wherein R is hydrogen and R' is the residue of an organic compound (substituted or unsubstituted) which contains a total of 8 to 20 carbon atoms and which contains no moieties or linkages which significantly interfere with the performance of the surfactant for its intended purpose; X is hydrogen or the residue of a hydrophobic end-cap; Y is hydrogen, methyl, ethyl, or mixtures thereof; Z is hydrogen, methyl, or ethyl; m is 0 or 1; and n is an integer of 1 to 40. After splitting of the surfactant into its components aldehyde and polyol, the hydrophobic components phase-separate and can be removed from the aqueous stream by routine means. The nonionic surfactant is useful in various processes requiring the removal of emulsified hydrophobic contaminants or other hydrophobic materials from an aqueous stream.
CA002176277A 1995-05-12 1996-05-10 Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water Expired - Fee Related CA2176277C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/439,964 1995-05-12
US08/439,964 US5744065A (en) 1995-05-12 1995-05-12 Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water

Publications (2)

Publication Number Publication Date
CA2176277A1 true CA2176277A1 (en) 1996-11-13
CA2176277C CA2176277C (en) 2001-07-03

Family

ID=23746857

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002176277A Expired - Fee Related CA2176277C (en) 1995-05-12 1996-05-10 Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water

Country Status (9)

Country Link
US (4) US5744065A (en)
EP (1) EP0742177B1 (en)
KR (1) KR100329452B1 (en)
CN (2) CN1143536A (en)
AU (1) AU708763B2 (en)
CA (1) CA2176277C (en)
DE (1) DE69612421T2 (en)
DK (1) DK0742177T3 (en)
MY (1) MY132307A (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5744064A (en) * 1995-05-12 1998-04-28 Union Carbide Chemicals & Plastics Technology Corporation Ketone-based surfactant and method for treating industrial, commerical, and institutional waste-water
US5744065A (en) * 1995-05-12 1998-04-28 Union Carbide Chemicals & Plastics Technology Corporation Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water
US6013185A (en) * 1997-09-25 2000-01-11 Rhodia Inc. Recovery and reuse of nonionic surfactants from aqueous solutions
DE19757904C1 (en) * 1997-12-24 1999-07-22 Celanese Gmbh Process for the purification of waste water from an aldolization reaction with subsequent hydrogenation
US6110231A (en) * 1998-06-01 2000-08-29 Boehme Filatex, Inc. Method of processing textile products utilizing decomposable emulsifiers
WO2002097393A2 (en) 2001-05-29 2002-12-05 Vanderbilt University Cleavable surfactants and methods of use thereof
US6824650B2 (en) 2001-12-18 2004-11-30 Kimberly-Clark Worldwide, Inc. Fibrous materials treated with a polyvinylamine polymer
US20040118540A1 (en) * 2002-12-20 2004-06-24 Kimberly-Clark Worlwide, Inc. Bicomponent strengtheninig system for paper
CA2532584C (en) 2003-07-31 2011-02-08 Nippon Paper Industries Co., Ltd. Methods for producing recycled pulp, methods for modifying pulp fibre surfaces and dirts, as well as pulp processing equipments
US7201227B2 (en) * 2004-12-20 2007-04-10 Bj Services Company Method and composition for treating a subterranean formation with splittable foams
TWI311679B (en) * 2006-04-28 2009-07-01 Primax Electronics Ltd A method of evaluating minimum sampling steps of auto focus
CA2665579C (en) 2006-10-06 2015-06-30 Robert C. Yeggy Separating compositions and methods of use
US7758746B2 (en) * 2006-10-06 2010-07-20 Vary Petrochem, Llc Separating compositions and methods of use
US8062512B2 (en) * 2006-10-06 2011-11-22 Vary Petrochem, Llc Processes for bitumen separation
US20080108522A1 (en) * 2006-11-07 2008-05-08 Bj Services Company Use of anionic surfactants as hydration aid for fracturing fluids
JP5364319B2 (en) * 2007-09-14 2013-12-11 花王株式会社 Alkali-type nonionic surfactant composition
US7816305B2 (en) * 2008-05-15 2010-10-19 Halliburton Energy Services, Inc. Reversible surfactants and methods of use in subterranean formations
EP2135989B1 (en) * 2008-06-19 2015-03-04 Electrolux Home Products Corporation N.V. Washing method and washing machine implementing this method
CA2736636A1 (en) * 2008-09-25 2010-04-01 Segetis, Inc. Ketal ester derivatives
BRPI1012056A2 (en) * 2009-05-29 2016-05-17 Segetis Inc solvent solution, cleaning composition and methods
CN101962531B (en) * 2009-07-22 2013-07-24 李英范 Multi-functional poly-inorganic salt flooding synergist for tertiary oil recovery and production method thereof
ES2400266T3 (en) 2009-10-02 2013-04-08 Cognis Ip Management Gmbh Alkoxylated glycerol acetals and their derivatives
WO2011143242A2 (en) 2010-05-10 2011-11-17 Segetis, Inc. Fragrant formulations, methods of manufacture thereof and articles comprising the same
US8828917B2 (en) 2010-08-12 2014-09-09 Segetis, Inc. Carboxy ester ketal removal compositions, methods of manufacture, and uses thereof
US9074065B2 (en) 2010-08-12 2015-07-07 Segetis, Inc. Latex coating compositions including carboxy ester ketal coalescents, methods of manufacture, and uses thereof
US8632612B2 (en) 2010-09-07 2014-01-21 Segetis, Inc. Compositions for dyeing keratin fibers
KR20130131323A (en) 2010-10-18 2013-12-03 세게티스, 인코포레이티드. Water reducible coating compositions including carboxy ester ketals, methods of manufacture, and uses thereof
US8349777B2 (en) * 2010-11-22 2013-01-08 Chevron Oronite Company Llc Lubricating composition containing 1,3-dioxolane-4-methanol compounds as antiwear additives
US10633579B2 (en) 2011-08-01 2020-04-28 Rhodia Operations Use of environmentally friendly solvents to replace glycol-based solvents
CN103930619B (en) 2011-08-25 2016-12-07 索理思科技开曼公司 The method increasing strength aid advantage in manufacturing paper and cardboard
KR101904824B1 (en) * 2011-09-06 2018-11-29 리쿠아비스타 비.브이. Surfactant and method of manufacturing electrowetting display devices uisng the same
CA2850443C (en) 2011-09-30 2017-06-20 Kemira Oyj Paper and methods of making paper
US9777434B2 (en) 2011-12-22 2017-10-03 Kemira Dyj Compositions and methods of making paper products
WO2013179139A1 (en) 2012-05-30 2013-12-05 Kemira Oyj Compositions and methods of making paper products
PL2864542T3 (en) 2012-06-22 2019-06-28 Kemira Oyj Compositions and methods of making paper products
US9458414B2 (en) 2012-09-21 2016-10-04 Gfbiochemicals Limited Cleaning, surfactant, and personal care compositions
US10624986B2 (en) 2012-09-26 2020-04-21 Kemira Oyj Absorbent materials, products including absorbent materials, compositions, and methods of making absorbent materials
WO2014085609A1 (en) 2012-11-29 2014-06-05 Segetis, Inc. Carboxy ester ketals, methods of manufacture, and uses thereof
US9562326B2 (en) 2013-03-14 2017-02-07 Kemira Oyj Compositions and methods of making paper products
KR20160135722A (en) * 2014-03-19 2016-11-28 바스프 에스이 Glycerol acetal polyethers and use thereof in lithium cells
CA3014869A1 (en) 2016-02-16 2017-08-24 Kemira Oyj Method for improving the strength performance of aldehyde functionalised polymer in papermaking process.
BR112018069524B1 (en) 2016-02-29 2022-09-13 Kemira Oyj SOFTENER COMPOSITION
US11473004B2 (en) 2016-12-02 2022-10-18 University Of Wyoming Microemulsions and uses thereof to displace oil in heterogeneous porous media
US11008525B2 (en) 2017-03-22 2021-05-18 Sabic Global Technologies B.V. Octane-boosting fuel additives, method of manufacture, and uses thereof

Family Cites Families (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244753A (en) * 1966-04-05 Process f-or manufacture cf acetals
US2905719A (en) * 1959-09-22 Cxhzo
GB414772A (en) * 1932-11-05 1934-08-07 Ig Farbenindustrie Ag Improvements in the manufacture and production of substances suitable as wetting, washing, dispersing and like agents
NL181914B (en) * 1952-11-29 Toyo Seikan Kaisha Ltd DEVICE FOR MANUFACTURE OF DRAWN OBJECTS.
US2786081A (en) * 1954-01-08 1957-03-19 Quaker Chemical Products Corp Acetal condensation products
US3058981A (en) * 1958-11-14 1962-10-16 Richardson Merrell Inc 2-methyl-2-nonyl-4-hydroxymethyl-1, 3-dioxolane and carbamates thereof
NL295816A (en) * 1962-07-27
US3909460A (en) * 1969-08-05 1975-09-30 Texaco Inc Detergent compositions containing dioxolanes as surfactants and their preparation
US3948953A (en) * 1969-08-05 1976-04-06 Texaco Inc. Dioxolane derivatives having surfactant properties
US3725438A (en) * 1970-10-16 1973-04-03 Petro Tex Chem Corp Production of cyclic acetals
US4060532A (en) * 1972-03-15 1977-11-29 Ici United States Inc. Halogenated dioxolane tranquilizers
US3931337A (en) * 1974-08-19 1976-01-06 Basf Wyandotte Corporation Multi-block polyacetal copolymer surfactants
US4189609A (en) * 1974-08-19 1980-02-19 Basf Wyandotte Corporation Multi-block coupled polyoxyalkylene copolymer surfactants
FR2302969A1 (en) * 1975-03-03 1976-10-01 Mitsui Toatsu Chemicals PROCESS FOR THE TREATMENT OF DEOILING RESIDUAL WATER CONTAINING OILY SUBSTANCES
US4198294A (en) * 1975-06-16 1980-04-15 The Redux Corporation, Inc. Water purification system
CA1076274A (en) * 1975-12-12 1980-04-22 Canadian D. A. Stuart Oil Co. Limited Separation and recovery of lipid material from aqueous media
DK162899C (en) * 1977-10-20 1992-05-18 Montedison Spa DEVICES AND PROCEDURES FOR THE DEPRECIATION OF PRINTED WASTE PAPER
US4360439A (en) * 1977-10-20 1982-11-23 Montedison S.P.A. Composition for the de-inking of printed waste paper by the washing process
EP0054366A3 (en) * 1980-12-15 1982-08-11 Imperial Chemical Industries Plc Novel surface active agents and compositions comprising them
US4408084A (en) * 1981-01-09 1983-10-04 Basf Wyandotte Corporation Non-ionic surfactants containing acetal groups
JPS5813530A (en) * 1981-07-20 1983-01-26 Kao Corp 2,3-dialkoxypropyl glyceryl ether, its preparation, and cosmetic containing the same
US4605773A (en) * 1982-08-10 1986-08-12 Diamond Shamrock Chemicals Company Low-foaming, pH sensitive, alkylamine polyether surface active agents and methods for using
US4483741A (en) * 1982-08-10 1984-11-20 Economics Laboratory, Inc. Low-foaming, pH sensitive, alkylamine polyether surface active agents and methods for using
DE3318592A1 (en) * 1983-05-21 1984-11-22 Hoechst Ag, 6230 Frankfurt Surface-active polyglycol ether acetals
US4675125A (en) * 1984-07-02 1987-06-23 Cincinnati-Vulcan Company Multi-purpose metal cleaning composition containing a boramide
DE3441542A1 (en) * 1984-11-14 1986-05-15 Hoechst Ag, 6230 Frankfurt BORDER AREA ACTIVE POLYGLYCOLAETHERACETALE
US4977281A (en) * 1987-12-21 1990-12-11 Milliken Research Corporation Polyoxyalkylene amino alcohols and polyoxyalkylene amino 1,3-dioxanes and 1,3-dioxolanes
US5076937A (en) * 1990-07-26 1991-12-31 Unitog Rental Services, Inc. Method for removal of fat, oil and grease from laundry wash water
US5114607A (en) * 1990-08-08 1992-05-19 Betz Laboratories, Inc. Low foaming alkaline cleaner comprising a surfactant mixture of an EO-PO-EO block copolymer and a PO-ZO-PO block copolymer
US5207922A (en) * 1990-10-25 1993-05-04 Diversey Corporation Method for treating laundry waste water
US5411670A (en) * 1990-11-05 1995-05-02 Halliburton Company Method and composition for protecting metal surfaces from oxidative environments
US5246590A (en) * 1991-06-21 1993-09-21 Dober Chemical Corporation Water treatment to reduce fog levels controlled with streaming current detector
US5167829A (en) * 1991-06-21 1992-12-01 Harold Diamond System for treating commercial waste effluents
US5137654A (en) * 1991-10-17 1992-08-11 Eaton Corporation Process for reclaiming oil/water emulsion
GB9124489D0 (en) * 1991-11-18 1992-01-08 Unilever Plc Liquid cleaning products
DE4142502A1 (en) * 1991-12-21 1993-06-24 Solvay Umweltchemie Gmbh BUBBLE-FREE HYDROGEN SUBSTANCE IN WAESSED LIQUIDS
JPH07508782A (en) * 1992-07-08 1995-09-28 ユニリーバー・ナームローゼ・ベンノートシヤープ liquid cleaning products
US5454956A (en) * 1993-04-01 1995-10-03 Deluxe Corporation Method of cleaning waste water and recovery of contaminants therefrom
US5744065A (en) * 1995-05-12 1998-04-28 Union Carbide Chemicals & Plastics Technology Corporation Aldehyde-based surfactant and method for treating industrial, commercial, and institutional waste-water
US5744064A (en) * 1995-05-12 1998-04-28 Union Carbide Chemicals & Plastics Technology Corporation Ketone-based surfactant and method for treating industrial, commerical, and institutional waste-water

Also Published As

Publication number Publication date
DK0742177T3 (en) 2001-07-23
DE69612421T2 (en) 2001-11-22
KR960041066A (en) 1996-12-17
CA2176277C (en) 2001-07-03
US5744065A (en) 1998-04-28
MY132307A (en) 2007-10-31
KR100329452B1 (en) 2002-10-11
CN1385509A (en) 2002-12-18
CN1143536A (en) 1997-02-26
US6051035A (en) 2000-04-18
AU5222396A (en) 1996-11-21
US6306249B1 (en) 2001-10-23
EP0742177A1 (en) 1996-11-13
EP0742177B1 (en) 2001-04-11
AU708763B2 (en) 1999-08-12
US5919372A (en) 1999-07-06
DE69612421D1 (en) 2001-05-17

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