CA2268067A1 - 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

Info

Publication number
CA2268067A1
CA2268067A1 CA002268067A CA2268067A CA2268067A1 CA 2268067 A1 CA2268067 A1 CA 2268067A1 CA 002268067 A CA002268067 A CA 002268067A CA 2268067 A CA2268067 A CA 2268067A CA 2268067 A1 CA2268067 A1 CA 2268067A1
Authority
CA
Canada
Prior art keywords
detergent composition
making
tower
agglomerates
surfactant
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
CA002268067A
Other languages
English (en)
Other versions
CA2268067C (fr
Inventor
Wayne Edward Beimesch
Jose Francisco Correa Romo
Steven Barrett Rogers
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
The Procter & Gamble Company
Wayne Edward Beimesch
Jose Francisco Correa Romo
Steven Barrett Rogers
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 The Procter & Gamble Company, Wayne Edward Beimesch, Jose Francisco Correa Romo, Steven Barrett Rogers filed Critical The Procter & Gamble Company
Publication of CA2268067A1 publication Critical patent/CA2268067A1/fr
Application granted granted Critical
Publication of CA2268067C publication Critical patent/CA2268067C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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)
CA002268067A 1996-10-04 1997-06-05 Procede de production d'une composition detergente sans l'utilisation d'une tour Expired - Fee Related CA2268067C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
WOPCT/US96/15881 1996-10-04
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
PCT/US1997/009794 WO1998014556A1 (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
CA2268067A1 true CA2268067A1 (fr) 1998-04-09
CA2268067C CA2268067C (fr) 2004-01-06

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
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
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
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
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
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

Family Applications Before (4)

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
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
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
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

Family Applications After (4)

Application Number Title Priority Date Filing Date
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
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

Country Status (12)

Country Link
EP (9) EP0929645A1 (fr)
JP (9) JP3305327B2 (fr)
CN (8) CN1156563C (fr)
AR (6) AR010509A1 (fr)
AT (5) ATE238409T1 (fr)
AU (9) AU7388196A (fr)
BR (7) BR9612732A (fr)
CA (9) CA2267291C (fr)
DE (5) DE69723986T2 (fr)
ES (5) ES2178778T3 (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
DE69609602T2 (de) * 1995-04-03 2001-04-12 Novartis Ag Pyrazolderivate und verfahren zu deren herstellung
GB9526097D0 (en) * 1995-12-20 1996-02-21 Unilever Plc Process
GB9712583D0 (en) 1997-06-16 1997-08-20 Unilever Plc Production of detergent granulates
GB9712580D0 (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
DE69826491T2 (de) 1997-07-14 2005-09-22 The Procter & Gamble Company, Cincinnati Verfahren zur herstellung eines waschmittels mit niedriger schüttdichte durch kontrolle der agglomerierung über die teilchengrösse
CN1218027C (zh) 1997-07-14 2005-09-07 普罗格特-甘布尔公司 通过控制在流化床干燥器中的附聚制备低密度洗涤剂组合物的方法
WO1999003965A1 (fr) 1997-07-15 1999-01-28 The Procter & Gamble Company Procede de production d'agglomerats detergents fortement actifs par injection d'une pate tensioactive en plusieurs etapes
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 (de) 1998-08-20 2007-03-15 The Procter & Gamble Company, Cincinnati Verfahren zur herstellung von waschmittel unter einsatz von einem mittelschnellen mischer/verdichter
US6794354B1 (en) * 1998-09-18 2004-09-21 The Procter & Gamble Company Continuous process for making detergent composition
JP2002528600A (ja) 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 外観と溶解性の改良された粒状洗剤組成物の製造方法
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
CN1200999C (zh) * 1999-06-21 2005-05-11 宝洁公司 制造粒状洗涤剂组合物的方法
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 (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.
AU2019210740B2 (en) 2018-01-26 2022-02-17 Ecolab Usa Inc. Solidifying liquid amine oxide, betaine, and/or sultaine surfactants with a carrier
CN111655830A (zh) 2018-01-26 2020-09-11 埃科莱布美国股份有限公司 固化液体阴离子表面活性剂
CN111655829A (zh) 2018-01-26 2020-09-11 埃科莱布美国股份有限公司 用粘合剂及任选载体固化液体氧化胺、甜菜碱和/或磺基甜菜碱表面活性剂

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE69108927T2 (de) * 1990-11-14 1995-12-14 Procter & Gamble Verfahren zur herstellung von sauerstoff-bleichsysteme enthaltende phosphatfreie geschirrspülmittelzusammensetzungen.
ES2179054T5 (es) * 1992-06-15 2006-06-16 THE PROCTER & GAMBLE COMPANY Procedimiento para preparar composiciones detergentes compactas.
EP0723581A1 (fr) * 1993-10-15 1996-07-31 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
ATE195549T1 (de) * 1994-01-17 2000-09-15 Procter & Gamble Verfahren zur herstellung von reinigungsmittelgranulaten
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
AU3478497A (en) 1998-04-24
EP0929649B1 (fr) 2003-11-26
DE69715224T2 (de) 2003-08-07
JP3305327B2 (ja) 2002-07-22
DE69721287T2 (de) 2004-03-11
DE69726440T2 (de) 2004-09-09
WO1998014556A1 (fr) 1998-04-09
JP2000503717A (ja) 2000-03-28
CN1239992A (zh) 1999-12-29
DE69723986T2 (de) 2004-06-03
AU3478397A (en) 1998-04-24
BR9711865A (pt) 1999-08-24
DE69726439T2 (de) 2004-09-09
JP3345022B2 (ja) 2002-11-18
WO1998014552A1 (fr) 1998-04-09
BR9712492A (pt) 1999-10-19
CN1239994A (zh) 1999-12-29
BR9713249A (pt) 1999-11-03
AU7388196A (en) 1998-04-24
AR010729A1 (es) 2000-07-12
ATE255160T1 (de) 2003-12-15
CA2267424A1 (fr) 1998-04-09
AU3303197A (en) 1998-04-24
CA2268068A1 (fr) 1998-04-09
CA2268067C (fr) 2004-01-06
ATE238409T1 (de) 2003-05-15
MX219077B (en) 2004-02-10
EP0929648A1 (fr) 1999-07-21
CA2268062C (fr) 2002-11-12
CN1239508A (zh) 1999-12-22
JP3299986B2 (ja) 2002-07-08
JP3299987B2 (ja) 2002-07-08
JP3299984B2 (ja) 2002-07-08
AU3303097A (en) 1998-04-24
AU3378597A (en) 1998-04-24
CA2268060C (fr) 2003-04-22
JP2000503716A (ja) 2000-03-28
EP0929645A1 (fr) 1999-07-21
JP3299985B2 (ja) 2002-07-08
AR010509A1 (es) 2000-06-28
MX9903193A (en) 2000-01-31
EP0929653A1 (fr) 1999-07-21
EP0929648B1 (fr) 2002-09-04
CA2267424C (fr) 2004-01-06
CA2268055C (fr) 2004-02-03
AU3478297A (en) 1998-04-24
DE69726439D1 (de) 2004-01-08
JP3299982B2 (ja) 2002-07-08
WO1998014549A1 (fr) 1998-04-09
JP2000507632A (ja) 2000-06-20
CN1239506A (zh) 1999-12-22
CN1239991A (zh) 1999-12-29
CA2268060A1 (fr) 1998-04-09
WO1998014555A1 (fr) 1998-04-09
AU3568397A (en) 1998-04-24
JP2000503718A (ja) 2000-03-28
EP0929652A1 (fr) 1999-07-21
WO1998014557A1 (fr) 1998-04-09
CN1133738C (zh) 2004-01-07
CA2267291C (fr) 2002-12-10
JP2000503715A (ja) 2000-03-28
CA2268063C (fr) 2002-10-29
DE69721287D1 (de) 2003-05-28
CA2268063A1 (fr) 1998-04-09
JP2000503720A (ja) 2000-03-28
EP0929650A1 (fr) 1999-07-21
MX9903195A (en) 1999-09-30
ATE255159T1 (de) 2003-12-15
JP2000503721A (ja) 2000-03-28
WO1998014553A1 (fr) 1998-04-09
BR9612732A (pt) 1999-08-24
CN1156560C (zh) 2004-07-07
AR010507A1 (es) 2000-06-28
EP0929651B1 (fr) 2003-11-26
EP0929654A1 (fr) 1999-07-21
BR9713246A (pt) 1999-11-03
EP0929650B1 (fr) 2003-08-06
CA2268062A1 (fr) 1998-04-09
ES2193386T3 (es) 2003-11-01
ES2178778T3 (es) 2003-01-01
JP2000503719A (ja) 2000-03-28
CN1239995A (zh) 1999-12-29
ATE246726T1 (de) 2003-08-15
CA2267291A1 (fr) 1998-04-09
DE69723986D1 (de) 2003-09-11
ATE223476T1 (de) 2002-09-15
AR010508A1 (es) 2000-06-28
CN1239507A (zh) 1999-12-22
CA2268052A1 (fr) 1998-04-09
CN1156563C (zh) 2004-07-07
JP3299981B2 (ja) 2002-07-08
BR9711861A (pt) 1999-08-24
AR010511A1 (es) 2000-06-28
CN1239993A (zh) 1999-12-29
CA2268055A1 (fr) 1998-04-09
ES2201305T3 (es) 2004-03-16
EP0929651A1 (fr) 1999-07-21
CN1156561C (zh) 2004-07-07
JP2000504062A (ja) 2000-04-04
EP0929649A1 (fr) 1999-07-21
DE69726440D1 (de) 2004-01-08
EP0929653B1 (fr) 2003-04-23
BR9712490A (pt) 1999-10-19
JP3299983B2 (ja) 2002-07-08
EP0929655A1 (fr) 1999-07-21
MX219076B (en) 2004-02-10
CN1133739C (zh) 2004-01-07
WO1998014554A1 (fr) 1998-04-09
AR010510A1 (es) 2000-06-28
CN1156562C (zh) 2004-07-07
AU3478597A (en) 1998-04-24
ES2212109T3 (es) 2004-07-16
CA2268068C (fr) 2003-06-03
ES2210544T3 (es) 2004-07-01
CA2268052C (fr) 2003-12-30
DE69715224D1 (de) 2002-10-10
WO1998014551A1 (fr) 1998-04-09
WO1998014558A1 (fr) 1998-04-09

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