AR010729A1 - PROCESS TO PREPARE A DETERGENT COMPOSITION THROUGH A PROCESS NOT DONE IN TORRE - Google Patents

PROCESS TO PREPARE A DETERGENT COMPOSITION THROUGH A PROCESS NOT DONE IN TORRE

Info

Publication number
AR010729A1
AR010729A1 ARP970104577A ARP970104577A AR010729A1 AR 010729 A1 AR010729 A1 AR 010729A1 AR P970104577 A ARP970104577 A AR P970104577A AR P970104577 A ARP970104577 A AR P970104577A AR 010729 A1 AR010729 A1 AR 010729A1
Authority
AR
Argentina
Prior art keywords
detergent composition
fluidizing
surfactant
iii
around
Prior art date
Application number
ARP970104577A
Other languages
Spanish (es)
Original Assignee
Procter & Gamble
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 Procter & Gamble filed Critical Procter & Gamble
Publication of AR010729A1 publication Critical patent/AR010729A1/en

Links

Classifications

    • 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
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • C11D11/0088Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads the liquefied ingredients being sprayed or adsorbed onto solid particles
    • 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
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents
    • 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
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • 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
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents
    • C11D11/02Preparation in the form of powder by spray drying
    • 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
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039Coated compositions or coated components in the compositions, (micro)capsules
    • 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
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06Powder; Flakes; Free-flowing mixtures; Sheets
    • C11D17/065High-density particulate detergent compositions
    • 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
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146Sulfuric acid esters
    • 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
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • 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
    • C11D1/02Anionic compounds
    • C11D1/12Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29Sulfates of polyoxyalkylene ethers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Proceso que no se realiza en torre, que comprende preparar una composicion detergente granular con una densidad de al menos alrededor de 600 g/l, queincluye los siguientes pasos: a) dispersar un surfactante, y recubrir dicho surfactante con polvo fino con un diámetro de 0,1 a 500 micrones, enunmezclador cuyo estado abarca i) de alrededor de 2 a alrededor de 50 segundos de tiempo de residencia medio, ii) de alrededor de 4 a alrededor de 25 m/s develocidad de rotacion periférica, y iii) dealrededor de 0,15 a alrededor de 7 kj/kg de estado de energía donde se forman los aglomerados; y b) granularlos aglomerados en uno o más aparatos de fluidificacion donde los estados de cada uno de los aparatos de fluidificacion incluyen i) dealrededor de 1 aalrededor de 10 minutos de residencia medio, ii) de alrededor de 100 a alrededor de 300 mm de profundidad de lecho no fluido, iii) no más dealrededor de 50 micrones de tamano de rociador en pequena cantidad, iv) de alrededor de 175 a alrededor de 250 mm de altura de aspersion, v) de alrededorde 0,2 a alrededor de 1,4 m/s de velocidad de fluidificacion y vi) de alrededor de 12 a alrededor de 100°C de temperatura de lecho.Non-tower process, which comprises preparing a granular detergent composition with a density of at least around 600 g / l, which includes the following steps: a) dispersing a surfactant, and coating said surfactant with a fine powder with a diameter of 0.1 to 500 microns, a mixer whose state encompasses i) from about 2 to about 50 seconds of mean residence time, ii) from about 4 to about 25 m / s peripheral rotational speed, and iii) around 0.15 to about 7 kj / kg energy state where the agglomerates form; and b) granulating them agglomerated in one or more fluidizing apparatuses where the states of each of the fluidizing apparatuses include i) from about 1 to about 10 minutes of average residence, ii) from about 100 to about 300 mm depth of non-fluid bed, iii) no more than about 50 micron sprinkler size in small quantity, iv) from about 175 to about 250mm spray height, v) from about 0.2 to about 1.4m / s fluidization rate and vi) from about 12 to about 100 ° C bed temperature.

ARP970104577A 1996-10-04 1997-10-03 PROCESS TO PREPARE A DETERGENT COMPOSITION THROUGH A PROCESS NOT DONE IN TORRE AR010729A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1996/015881 WO1998014549A1 (en) 1996-10-04 1996-10-04 Process for making a low density detergent composition by non-tower process

Publications (1)

Publication Number Publication Date
AR010729A1 true AR010729A1 (en) 2000-07-12

Family

ID=22255901

Family Applications (6)

Application Number Title Priority Date Filing Date
ARP970104574A AR010507A1 (en) 1996-10-04 1997-10-03 AGGLOMERATION PROCESS TO PREPARE A GRANULAR DETERGENT COMPOSITION WITH A DENSITY OF ABOUT 600 G / L AND A GRANULAR DETERGENT COMPOSITION THAT IS SEPARATED ACCORDING TO SUCH PROCESS
ARP970104575A AR010508A1 (en) 1996-10-04 1997-10-03 PROCESS TO MANUFACTURE A DETERGENT COMPOSITION THAT IS NOT MADE IN TORRE
ARP970104579A AR010511A1 (en) 1996-10-04 1997-10-03 PROCESS TO DEVELOP A DETERGENT COMPOSITION THROUGH A TOWERLESS PROCESS
ARP970104576A AR010509A1 (en) 1996-10-04 1997-10-03 PROCESS NOT MADE IN TOWER TO MANUFACTURE A DETERGENT COMPOSITION
ARP970104577A AR010729A1 (en) 1996-10-04 1997-10-03 PROCESS TO PREPARE A DETERGENT COMPOSITION THROUGH A PROCESS NOT DONE IN TORRE
ARP970104578A AR010510A1 (en) 1996-10-04 1997-10-03 PROCESS TO PRODUCE THE COMPOSITION OF A DETERGENT THROUGH A PROCESS THAT IS NOT CARRIED OUT IN TORRE

Family Applications Before (4)

Application Number Title Priority Date Filing Date
ARP970104574A AR010507A1 (en) 1996-10-04 1997-10-03 AGGLOMERATION PROCESS TO PREPARE A GRANULAR DETERGENT COMPOSITION WITH A DENSITY OF ABOUT 600 G / L AND A GRANULAR DETERGENT COMPOSITION THAT IS SEPARATED ACCORDING TO SUCH PROCESS
ARP970104575A AR010508A1 (en) 1996-10-04 1997-10-03 PROCESS TO MANUFACTURE A DETERGENT COMPOSITION THAT IS NOT MADE IN TORRE
ARP970104579A AR010511A1 (en) 1996-10-04 1997-10-03 PROCESS TO DEVELOP A DETERGENT COMPOSITION THROUGH A TOWERLESS PROCESS
ARP970104576A AR010509A1 (en) 1996-10-04 1997-10-03 PROCESS NOT MADE IN TOWER TO MANUFACTURE A DETERGENT COMPOSITION

Family Applications After (1)

Application Number Title Priority Date Filing Date
ARP970104578A AR010510A1 (en) 1996-10-04 1997-10-03 PROCESS TO PRODUCE THE COMPOSITION OF A DETERGENT THROUGH A PROCESS THAT IS NOT CARRIED OUT IN TORRE

Country Status (12)

Country Link
EP (9) EP0929645A1 (en)
JP (9) JP3305327B2 (en)
CN (8) CN1156562C (en)
AR (6) AR010507A1 (en)
AT (5) ATE238409T1 (en)
AU (9) AU7388196A (en)
BR (7) BR9612732A (en)
CA (9) CA2267291C (en)
DE (5) DE69726439T2 (en)
ES (5) ES2212109T3 (en)
MX (2) MX219077B (en)
WO (9) WO1998014549A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996031510A1 (en) * 1995-04-03 1996-10-10 Novartis Ag Pyrazole derivatives and processes for the preparation thereof
GB9526097D0 (en) * 1995-12-20 1996-02-21 Unilever Plc Process
GB9712580D0 (en) * 1997-06-16 1997-08-20 Unilever Plc Production of detergent granulates
GB9712583D0 (en) 1997-06-16 1997-08-20 Unilever Plc Production of detergent granulates
GB9713748D0 (en) * 1997-06-27 1997-09-03 Unilever Plc Production of detergent granulates
US6258773B1 (en) 1997-07-14 2001-07-10 The Procter & Gamble Company Process for making a low density detergent composition by controlling agglomeration via particle size
CN1218027C (en) 1997-07-14 2005-09-07 普罗格特-甘布尔公司 Process for making low density detergent composition by controlled agglomeration in fluid bed dryer
WO1999003965A1 (en) 1997-07-15 1999-01-28 The Procter & Gamble Company Process for making high-active detergent agglomerates by multi-stage surfactant paste injection
US6440342B1 (en) 1998-07-08 2002-08-27 The Procter & Gamble Company Process for making a low density detergent composition by controlling nozzle height in a fluid bed dryer
DE69932827T2 (en) 1998-08-20 2007-03-15 The Procter & Gamble Company, Cincinnati METHOD FOR PRODUCING DETERGENTS USING A MEDIUM-FAST MIXER / COMPRESSOR
US6794354B1 (en) * 1998-09-18 2004-09-21 The Procter & Gamble Company Continuous process for making detergent composition
JP2002528600A (en) * 1998-10-26 2002-09-03 ザ、プロクター、エンド、ギャンブル、カンパニー Method for producing a granular detergent composition having improved appearance and solubility
GB9825558D0 (en) * 1998-11-20 1999-01-13 Unilever Plc Granular detergent components and particulate detergent compositions containing them
GB9913546D0 (en) 1999-06-10 1999-08-11 Unilever Plc Granular detergent component containing zeolite map and laundry detergent compositions containing it
EP1187904B1 (en) * 1999-06-21 2004-08-11 The Procter & Gamble Company Process for making a granular detergent composition
US6894018B1 (en) 1999-06-21 2005-05-17 The Procter & Gamble Company Process for making granular detergent in a fluidized bed granulator having recycling of improperly sized particles
GB0009877D0 (en) 2000-04-20 2000-06-07 Unilever Plc Granular detergent component and process for its preparation
EP2123742A1 (en) 2008-05-14 2009-11-25 The Procter and Gamble Company A solid laundry detergent composition comprising light density silicate salt
WO2011061045A1 (en) 2009-11-20 2011-05-26 Unilever Nv Detergent granule and its manufacture
WO2015154277A1 (en) 2014-04-10 2015-10-15 The Procter & Gamble Company Composite detergent granules and laundry compositions comprising the same
US11377628B2 (en) * 2018-01-26 2022-07-05 Ecolab Usa Inc. Solidifying liquid anionic surfactants
EP3743494A1 (en) 2018-01-26 2020-12-02 Ecolab Usa Inc. Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a binder and optional carrier
CA3089629A1 (en) 2018-01-26 2019-08-01 Ecolab Usa Inc. Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a carrier

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US3625902A (en) * 1968-10-11 1971-12-07 Stauffer Chemical Co Method of preparing agglomerated detergent composition
US4169806A (en) * 1978-08-09 1979-10-02 The Procter & Gamble Company Agglomeration process for making granular detergents
US4992079A (en) * 1986-11-07 1991-02-12 Fmc Corporation Process for preparing a nonphosphate laundry detergent
GB2209172A (en) * 1987-08-28 1989-05-04 Unilever Plc Preparation of solid particulate components for detergents
KR0170424B1 (en) * 1990-07-05 1999-01-15 호르스트 헤를레,요한 글라슬 Process for making washing and cleaning active tensile granulates
ES2071494T3 (en) * 1990-11-14 1995-06-16 Procter & Gamble PROCEDURE FOR THE PREPARATION OF COMPOSITIONS FOR NON-PHOSPHATE DISHWASHERS WITH OXYGEN BLEACHING SYSTEMS.
KR100276030B1 (en) * 1992-06-15 2000-12-15 데이비드 엠 모이어 Manufacturing method of granulated detergent and granulated detergent obtained in such a manner
CA2173108A1 (en) * 1993-10-15 1995-04-20 Scott William Capeci Continuous process for making high density detergent granules
GB9322530D0 (en) * 1993-11-02 1993-12-22 Unilever Plc Process for the production of a detergent composition
EP0663439B1 (en) * 1994-01-17 2000-08-16 The Procter & Gamble Company Process for preparing detergent granules
US5516448A (en) * 1994-09-20 1996-05-14 The Procter & Gamble Company Process for making a high density detergent composition which includes selected recycle streams for improved agglomerate
US5489392A (en) * 1994-09-20 1996-02-06 The Procter & Gamble Company Process for making a high density detergent composition in a single mixer/densifier with selected recycle streams for improved agglomerate properties
US5554587A (en) * 1995-08-15 1996-09-10 The Procter & Gamble Company Process for making high density detergent composition using conditioned air

Also Published As

Publication number Publication date
DE69723986T2 (en) 2004-06-03
JP2000503718A (en) 2000-03-28
JP2000503719A (en) 2000-03-28
ES2212109T3 (en) 2004-07-16
AU3378597A (en) 1998-04-24
AU7388196A (en) 1998-04-24
CA2268062A1 (en) 1998-04-09
EP0929652A1 (en) 1999-07-21
JP3299982B2 (en) 2002-07-08
CA2268060C (en) 2003-04-22
WO1998014557A1 (en) 1998-04-09
CA2268055C (en) 2004-02-03
CA2268062C (en) 2002-11-12
EP0929653B1 (en) 2003-04-23
DE69715224D1 (en) 2002-10-10
WO1998014552A1 (en) 1998-04-09
EP0929655A1 (en) 1999-07-21
CA2268060A1 (en) 1998-04-09
JP2000507632A (en) 2000-06-20
ES2201305T3 (en) 2004-03-16
BR9713246A (en) 1999-11-03
CN1133738C (en) 2004-01-07
JP2000503715A (en) 2000-03-28
CA2268068A1 (en) 1998-04-09
JP2000503716A (en) 2000-03-28
CA2268067A1 (en) 1998-04-09
DE69723986D1 (en) 2003-09-11
DE69721287T2 (en) 2004-03-11
DE69726440T2 (en) 2004-09-09
ES2178778T3 (en) 2003-01-01
EP0929645A1 (en) 1999-07-21
CA2268067C (en) 2004-01-06
EP0929653A1 (en) 1999-07-21
EP0929648B1 (en) 2002-09-04
JP3299985B2 (en) 2002-07-08
AU3478597A (en) 1998-04-24
ES2193386T3 (en) 2003-11-01
AU3303197A (en) 1998-04-24
AR010510A1 (en) 2000-06-28
WO1998014554A1 (en) 1998-04-09
CA2267291C (en) 2002-12-10
JP3345022B2 (en) 2002-11-18
CA2268063C (en) 2002-10-29
CA2268052C (en) 2003-12-30
ATE238409T1 (en) 2003-05-15
AU3478497A (en) 1998-04-24
CN1239992A (en) 1999-12-29
EP0929650A1 (en) 1999-07-21
MX219077B (en) 2004-02-10
CN1239991A (en) 1999-12-29
DE69726439T2 (en) 2004-09-09
BR9711861A (en) 1999-08-24
BR9712492A (en) 1999-10-19
CA2268052A1 (en) 1998-04-09
JP2000503717A (en) 2000-03-28
JP3299986B2 (en) 2002-07-08
CN1156563C (en) 2004-07-07
JP3305327B2 (en) 2002-07-22
WO1998014551A1 (en) 1998-04-09
AU3478397A (en) 1998-04-24
AR010508A1 (en) 2000-06-28
ATE255159T1 (en) 2003-12-15
CN1239993A (en) 1999-12-29
EP0929651A1 (en) 1999-07-21
WO1998014556A1 (en) 1998-04-09
CA2268063A1 (en) 1998-04-09
AU3568397A (en) 1998-04-24
JP3299987B2 (en) 2002-07-08
WO1998014558A1 (en) 1998-04-09
ES2210544T3 (en) 2004-07-01
JP2000503721A (en) 2000-03-28
CN1239506A (en) 1999-12-22
JP2000503720A (en) 2000-03-28
ATE246726T1 (en) 2003-08-15
DE69721287D1 (en) 2003-05-28
EP0929651B1 (en) 2003-11-26
CN1133739C (en) 2004-01-07
AU3303097A (en) 1998-04-24
JP3299983B2 (en) 2002-07-08
CN1156561C (en) 2004-07-07
WO1998014549A1 (en) 1998-04-09
WO1998014553A1 (en) 1998-04-09
AU3478297A (en) 1998-04-24
CN1156562C (en) 2004-07-07
BR9712490A (en) 1999-10-19
DE69715224T2 (en) 2003-08-07
AR010507A1 (en) 2000-06-28
ATE223476T1 (en) 2002-09-15
CA2268068C (en) 2003-06-03
EP0929649B1 (en) 2003-11-26
CN1239994A (en) 1999-12-29
BR9612732A (en) 1999-08-24
CA2267424C (en) 2004-01-06
CN1156560C (en) 2004-07-07
CA2267424A1 (en) 1998-04-09
CA2268055A1 (en) 1998-04-09
DE69726439D1 (en) 2004-01-08
EP0929654A1 (en) 1999-07-21
JP2000504062A (en) 2000-04-04
ATE255160T1 (en) 2003-12-15
MX219076B (en) 2004-02-10
EP0929648A1 (en) 1999-07-21
DE69726440D1 (en) 2004-01-08
BR9711865A (en) 1999-08-24
JP3299981B2 (en) 2002-07-08
AR010509A1 (en) 2000-06-28
MX9903195A (en) 1999-09-30
JP3299984B2 (en) 2002-07-08
CN1239508A (en) 1999-12-22
CN1239507A (en) 1999-12-22
CA2267291A1 (en) 1998-04-09
EP0929649A1 (en) 1999-07-21
EP0929650B1 (en) 2003-08-06
MX9903193A (en) 2000-01-31
AR010511A1 (en) 2000-06-28
WO1998014555A1 (en) 1998-04-09
BR9713249A (en) 1999-11-03
CN1239995A (en) 1999-12-29

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