CA2268052C - Procede de production d'une composition detergente sans l'utilisation d'une tour - Google Patents

Procede de production d'une composition detergente sans l'utilisation d'une tour Download PDF

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Publication number
CA2268052C
CA2268052C CA002268052A CA2268052A CA2268052C CA 2268052 C CA2268052 C CA 2268052C CA 002268052 A CA002268052 A CA 002268052A CA 2268052 A CA2268052 A CA 2268052A CA 2268052 C CA2268052 C CA 2268052C
Authority
CA
Canada
Prior art keywords
mixer
agglomerates
surfactant
residence time
mean residence
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.)
Expired - Fee Related
Application number
CA002268052A
Other languages
English (en)
Other versions
CA2268052A1 (fr
Inventor
Angela Gloria Del Greco
Wayne Edward Beimesch
Manivannan Kandasamy
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.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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 and Gamble Co filed Critical Procter and Gamble Co
Publication of CA2268052A1 publication Critical patent/CA2268052A1/fr
Application granted granted Critical
Publication of CA2268052C publication Critical patent/CA2268052C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082—Special 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
    • C11D11/0088—Special 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
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0082—Special 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
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/02—Preparation in the form of powder by spray drying
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • C11D17/065—High-density particulate detergent compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates 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

Cette invention se rapporte à un procédé n'utilisant pas de tour, qui sert à préparer en continu une composition détergente granulaire ayant une densité d'au moins 600 g/l environ. Ce procédé consiste: (a) à disperser un tensioactif et à revêtir ce tensioactif d'une fine poudre dans un mélangeur, de façon à produire un premier type d'agglomérats; (b) à mélanger soigneusement ces premiers agglomérats dans un mélangeur, de façon à produire un second type d'agglomérats; et (c) à réduire ces seconds agglomérats en granulés dans un ou plusieurs appareils de fluidisation. Ce procédé peut également comporter une étape (b') consistant à vaporiser un liquide finement atomisé sur les seconds agglomérats dans un mélangeur, cette étape étant située entre l'étape (b) et l'étape (c).
CA002268052A 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour Expired - Fee Related CA2268052C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/US1996/015881 WO1998014549A1 (fr) 1996-10-04 1996-10-04 Procede de production d'une composition de detergent de faible densite par un processus sans colonne
WOPCT/US96/15881 1996-10-04
PCT/US1997/009795 WO1998014557A1 (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour

Publications (2)

Publication Number Publication Date
CA2268052A1 CA2268052A1 (fr) 1998-04-09
CA2268052C true CA2268052C (fr) 2003-12-30

Family

ID=22255901

Family Applications (9)

Application Number Title Priority Date Filing Date
CA002267291A Expired - Fee Related CA2267291C (fr) 1996-10-04 1996-10-04 Procede de production d'une composition de detergent de faible densite par un processus sans colonne
CA002268055A Expired - Fee Related CA2268055C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268063A Expired - Fee Related CA2268063C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002267424A Expired - Fee Related CA2267424C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268067A Expired - Fee Related CA2268067C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268062A Expired - Fee Related CA2268062C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268068A Expired - Fee Related CA2268068C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268052A Expired - Fee Related CA2268052C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268060A Expired - Fee Related CA2268060C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour

Family Applications Before (7)

Application Number Title Priority Date Filing Date
CA002267291A Expired - Fee Related CA2267291C (fr) 1996-10-04 1996-10-04 Procede de production d'une composition de detergent de faible densite par un processus sans colonne
CA002268055A Expired - Fee Related CA2268055C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268063A Expired - Fee Related CA2268063C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002267424A Expired - Fee Related CA2267424C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268067A Expired - Fee Related CA2268067C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268062A Expired - Fee Related CA2268062C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour
CA002268068A Expired - Fee Related CA2268068C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002268060A Expired - Fee Related CA2268060C (fr) 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour

Country Status (12)

Country Link
EP (9) EP0929645A1 (fr)
JP (9) JP3305327B2 (fr)
CN (8) CN1156560C (fr)
AR (6) AR010509A1 (fr)
AT (5) ATE223476T1 (fr)
AU (9) AU7388196A (fr)
BR (7) BR9612732A (fr)
CA (9) CA2267291C (fr)
DE (5) DE69715224T2 (fr)
ES (5) ES2212109T3 (fr)
MX (2) MX219076B (fr)
WO (9) WO1998014549A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU711592B2 (en) * 1995-04-03 1999-10-14 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
JP2002507629A (ja) 1997-07-14 2002-03-12 ザ、プロクター、エンド、ギャンブル、カンパニー 粒子サイズによって塊状化を制御することによる低密度の洗剤組成物の作製方法
BR9810723A (pt) 1997-07-14 2000-08-08 Procter & Gamble Processo para fabricação de uma composição de detergente de baixa densidade por meio da aglomeração controlada em uma secadora de leito fluido
DE69823668T2 (de) 1997-07-15 2005-04-07 The Procter & Gamble Company, Cincinnati Verfahren zur herstellung hochkonzentrierter waschmittelagglomerate durch mehrstufige einspritzung von tensidpasten
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
CN1179030C (zh) 1998-08-20 2004-12-08 宝洁公司 包括中速混合器/密化器的制备高密度洗涤剂的方法
US6794354B1 (en) * 1998-09-18 2004-09-21 The Procter & Gamble Company Continuous process for making detergent composition
EP1124937B1 (fr) * 1998-10-26 2002-12-11 The Procter & Gamble Company Procedes de preparation d'une composition detergente granuleuse avec une apparence et une solubilite ameliorees
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
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
ATE273378T1 (de) * 1999-06-21 2004-08-15 Procter & Gamble Verfahren zur herstellung granularer waschmittelzusammensetzungen
GB0009877D0 (en) † 2000-04-20 2000-06-07 Unilever Plc Granular detergent component and process for its preparation
EP2123742A1 (fr) 2008-05-14 2009-11-25 The Procter and Gamble Company Compositions de détergent solide pour lessive comprenant du sel de silicate à faible densité
WO2011061045A1 (fr) 2009-11-20 2011-05-26 Unilever Nv Granulé de détergent et son procédé de fabrication
MX2016013263A (es) 2014-04-10 2017-01-16 Procter & Gamble Granulos detergentes compuestos y composiciones para lavanderia que comprenden estos.
JP7485606B2 (ja) 2018-01-26 2024-05-16 エコラボ ユーエスエー インコーポレイティド 液体アニオン性界面活性剤の固化
WO2019148090A1 (fr) 2018-01-26 2019-08-01 Ecolab Usa Inc. Solidification de tensioactifs liquides d'oxyde d'amine, de bétaïne et/ou de sultaïne ayant un véhicule
BR112020015170A2 (pt) 2018-01-26 2021-01-26 Ecolab Usa Inc. composições de tensoativo líquido solidificado e de limpeza sólida, e, método para limpar uma superfície

Family Cites Families (13)

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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 (ko) * 1990-07-05 1999-01-15 호르스트 헤를레,요한 글라슬 세제 및 청정제용 표면 활성제 과립의 제조방법
HUT64391A (en) * 1990-11-14 1993-12-28 Procter & Gamble Nonphosphated dishwashing compositions with oxygen belach systems and method for producing them
CZ284883B6 (cs) * 1992-06-15 1999-03-17 The Procter & Gamble Company Způsob výroby kompaktních detergentních prostředků
WO1995010595A1 (fr) * 1993-10-15 1995-04-20 The Procter & Gamble Company Procede continu pour produire un detergent granulaire a haute densite
GB9322530D0 (en) * 1993-11-02 1993-12-22 Unilever Plc Process for the production of a detergent composition
DK0663439T3 (da) * 1994-01-17 2000-09-18 Procter & Gamble Fremgangsmåde til fremstilling af detergentgranulat
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
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
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 (de) 2004-06-03
BR9713249A (pt) 1999-11-03
ATE246726T1 (de) 2003-08-15
CA2268068A1 (fr) 1998-04-09
MX219077B (en) 2004-02-10
AR010511A1 (es) 2000-06-28
JP2000503718A (ja) 2000-03-28
MX219076B (en) 2004-02-10
CN1239991A (zh) 1999-12-29
AU3568397A (en) 1998-04-24
EP0929649B1 (fr) 2003-11-26
EP0929651A1 (fr) 1999-07-21
BR9711861A (pt) 1999-08-24
ATE255159T1 (de) 2003-12-15
JP2000503721A (ja) 2000-03-28
ES2210544T3 (es) 2004-07-01
BR9713246A (pt) 1999-11-03
EP0929653B1 (fr) 2003-04-23
AR010508A1 (es) 2000-06-28
ATE223476T1 (de) 2002-09-15
DE69715224D1 (de) 2002-10-10
DE69721287T2 (de) 2004-03-11
DE69726440T2 (de) 2004-09-09
BR9712492A (pt) 1999-10-19
BR9712490A (pt) 1999-10-19
EP0929649A1 (fr) 1999-07-21
JP2000504062A (ja) 2000-04-04
EP0929653A1 (fr) 1999-07-21
JP3345022B2 (ja) 2002-11-18
CA2268067A1 (fr) 1998-04-09
ES2212109T3 (es) 2004-07-16
DE69726439T2 (de) 2004-09-09
JP2000503717A (ja) 2000-03-28
JP2000503715A (ja) 2000-03-28
EP0929650B1 (fr) 2003-08-06
ES2193386T3 (es) 2003-11-01
CA2268067C (fr) 2004-01-06
CN1239995A (zh) 1999-12-29
CN1133739C (zh) 2004-01-07
EP0929645A1 (fr) 1999-07-21
CN1156560C (zh) 2004-07-07
CA2268060C (fr) 2003-04-22
CN1239993A (zh) 1999-12-29
CA2268055C (fr) 2004-02-03
JP3299985B2 (ja) 2002-07-08
WO1998014555A1 (fr) 1998-04-09
CA2267291C (fr) 2002-12-10
JP2000507632A (ja) 2000-06-20
CA2268055A1 (fr) 1998-04-09
DE69715224T2 (de) 2003-08-07
CA2267291A1 (fr) 1998-04-09
CA2267424C (fr) 2004-01-06
DE69726440D1 (de) 2004-01-08
CN1133738C (zh) 2004-01-07
AU3478497A (en) 1998-04-24
ES2178778T3 (es) 2003-01-01
CA2268063C (fr) 2002-10-29
AR010729A1 (es) 2000-07-12
CN1239507A (zh) 1999-12-22
CN1239508A (zh) 1999-12-22
JP3299987B2 (ja) 2002-07-08
BR9711865A (pt) 1999-08-24
DE69726439D1 (de) 2004-01-08
AU3378597A (en) 1998-04-24
JP3299983B2 (ja) 2002-07-08
AR010510A1 (es) 2000-06-28
JP3299982B2 (ja) 2002-07-08
EP0929651B1 (fr) 2003-11-26
CN1239994A (zh) 1999-12-29
CN1156561C (zh) 2004-07-07
JP2000503720A (ja) 2000-03-28
EP0929654A1 (fr) 1999-07-21
DE69723986D1 (de) 2003-09-11
EP0929655A1 (fr) 1999-07-21
EP0929652A1 (fr) 1999-07-21
MX9903195A (en) 1999-09-30
WO1998014549A1 (fr) 1998-04-09
CA2268068C (fr) 2003-06-03
CA2267424A1 (fr) 1998-04-09
ATE255160T1 (de) 2003-12-15
BR9612732A (pt) 1999-08-24
JP3299984B2 (ja) 2002-07-08
ATE238409T1 (de) 2003-05-15
AU3478297A (en) 1998-04-24
WO1998014558A1 (fr) 1998-04-09
WO1998014554A1 (fr) 1998-04-09
DE69721287D1 (de) 2003-05-28
JP2000503719A (ja) 2000-03-28
AU3478597A (en) 1998-04-24
AR010509A1 (es) 2000-06-28
WO1998014556A1 (fr) 1998-04-09
AU3303097A (en) 1998-04-24
CA2268060A1 (fr) 1998-04-09
ES2201305T3 (es) 2004-03-16
JP2000503716A (ja) 2000-03-28
JP3299986B2 (ja) 2002-07-08
AU3478397A (en) 1998-04-24
WO1998014557A1 (fr) 1998-04-09
CA2268062A1 (fr) 1998-04-09
JP3305327B2 (ja) 2002-07-22
AU7388196A (en) 1998-04-24
JP3299981B2 (ja) 2002-07-08
CA2268052A1 (fr) 1998-04-09
EP0929650A1 (fr) 1999-07-21
CN1239992A (zh) 1999-12-29
CN1156563C (zh) 2004-07-07
WO1998014551A1 (fr) 1998-04-09
CN1239506A (zh) 1999-12-22
CN1156562C (zh) 2004-07-07
AR010507A1 (es) 2000-06-28
EP0929648B1 (fr) 2002-09-04
WO1998014553A1 (fr) 1998-04-09
CA2268063A1 (fr) 1998-04-09
EP0929648A1 (fr) 1999-07-21
AU3303197A (en) 1998-04-24
MX9903193A (en) 2000-01-31
CA2268062C (fr) 2002-11-12
WO1998014552A1 (fr) 1998-04-09

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