CA2299353A1 - Adhesifs solubles a base de liant contenant des composes di- ou polysulfure - Google Patents

Adhesifs solubles a base de liant contenant des composes di- ou polysulfure Download PDF

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Publication number
CA2299353A1
CA2299353A1 CA002299353A CA2299353A CA2299353A1 CA 2299353 A1 CA2299353 A1 CA 2299353A1 CA 002299353 A CA002299353 A CA 002299353A CA 2299353 A CA2299353 A CA 2299353A CA 2299353 A1 CA2299353 A1 CA 2299353A1
Authority
CA
Canada
Prior art keywords
adhesive
bond
dissolving
bonds
splitting
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.)
Abandoned
Application number
CA002299353A
Other languages
English (en)
Inventor
Andreas Ferencz
Herbert Fischer
Michael Hirthammer
Hubert Schenkel
Manfred Schumann
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.)
Individual
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of CA2299353A1 publication Critical patent/CA2299353A1/fr
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/36—Hydroxylated esters of higher fatty acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3855—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur
    • C08G18/3863—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms
    • C08G18/3865—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms containing groups having one sulfur atom between two carbon atoms
    • C08G18/3868—Low-molecular-weight compounds having heteroatoms other than oxygen having sulfur containing groups having sulfur atoms between two carbon atoms, the sulfur atoms being directly linked to carbon atoms or other sulfur atoms containing groups having one sulfur atom between two carbon atoms the sulfur atom belonging to a sulfide group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/80—Masked polyisocyanates
    • C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
    • C08G18/8054—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
    • C08G59/4007—Curing agents not provided for by the groups C08G59/42 - C08G59/66
    • C08G59/4064—Curing agents not provided for by the groups C08G59/42 - C08G59/66 sulfur containing compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/28—Non-macromolecular organic substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

L'invention concerne des compositions adhésives solubles qui peuvent être formulées sur la base de liants dans lesquels au moins un constituant structural contenant des composés di- ou polysulfure. Ces adhésifs peuvent durcir selon des méthodes traditionnelles, soit comme adhésifs à deux composants, soit comme adhésifs thermodurcissables. Les composés adhésifs de ce type peuvent être dissous avec des agents de dissociation à base de composés mercapto ou à base d'agents de réduction, éventuellement par adjonction d'agents gonflants. Cette propriété permet de détacher par voie chimique des éléments collés dans le joint de collage.
CA002299353A 1997-08-04 1998-07-25 Adhesifs solubles a base de liant contenant des composes di- ou polysulfure Abandoned CA2299353A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19733643A DE19733643A1 (de) 1997-08-04 1997-08-04 Lösbare Klebstoffe
DE19733643.4 1997-08-04
PCT/EP1998/004667 WO1999007774A1 (fr) 1997-08-04 1998-07-25 Adhesifs solubles a base de liant contenant des composes di- ou polysulfure

Publications (1)

Publication Number Publication Date
CA2299353A1 true CA2299353A1 (fr) 1999-02-18

Family

ID=7837929

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002299353A Abandoned CA2299353A1 (fr) 1997-08-04 1998-07-25 Adhesifs solubles a base de liant contenant des composes di- ou polysulfure

Country Status (8)

Country Link
EP (1) EP1002007A1 (fr)
JP (1) JP2001512762A (fr)
AR (1) AR010937A1 (fr)
AU (1) AU9069298A (fr)
CA (1) CA2299353A1 (fr)
DE (1) DE19733643A1 (fr)
WO (1) WO1999007774A1 (fr)
ZA (1) ZA986945B (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7479288B2 (en) 2001-12-21 2009-01-20 Henkel Kommanditgesellschaft Auf Aktien Nanoparticulate preparation
US11437162B2 (en) * 2019-12-31 2022-09-06 Industrial Technology Research Institute Conductive material composition and conductive material prepared therefrom
US11530340B1 (en) 2022-06-30 2022-12-20 CreateMe Technologies LLC Cyclodextrin-azobenzene adhesives for apparel products
US11530336B1 (en) 2022-06-30 2022-12-20 CreateMe Technologies LLC Methods of assembling apparel products having cyclodextrin-azobenzene adhesives
CN115505098A (zh) * 2022-09-02 2022-12-23 中山大学 一种两性离子聚氨酯及其制备方法和应用
US11542412B1 (en) 2022-06-30 2023-01-03 CreateMe Technologies LLC Methods of disassembling apparel products having cyclodextrin-azobenzene adhesives
US11542413B1 (en) 2022-06-30 2023-01-03 CreateMe Technologies LLC Methods of disassembling apparel products having imine adhesives
US11629272B1 (en) 2022-06-30 2023-04-18 CreateMe Technologies LLC Methods of assembling apparel products having thioester adhesives
US11632995B1 (en) * 2022-06-30 2023-04-25 CreateMe Technologies LLC Methods of assembling apparel products having disulfide adhesives
US11634616B1 (en) 2022-06-30 2023-04-25 CreateMe Technologies LLC Methods of assembling apparel products having boronate adhesives
US11653709B1 (en) * 2022-06-30 2023-05-23 CreateMe Technologies LLC Methods of disassembling apparel products having disulfide adhesives
US11655397B1 (en) 2022-06-30 2023-05-23 CreateMe Technologies LLC Methods of assembling apparel products having cycloalkene adhesives
US11692111B1 (en) 2022-06-30 2023-07-04 CreateMe Technologies LLC Methods of disassembling apparel products having shape memory adhesives
US11713405B1 (en) 2022-06-30 2023-08-01 CreateMe Technologies LLC Methods of disassembling apparel products having thioester adhesives
US11712873B1 (en) 2022-06-30 2023-08-01 CreateMe Technologies LLC Boronate adhesives for apparel products
US11732159B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Methods of disassembling apparel products having boronate adhesives
US11730215B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Thioester adhesives for apparel products
US11730217B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Methods of disassembling apparel products having cycloalkene adhesives
US11752234B1 (en) 2022-06-30 2023-09-12 CreateMe Technologies LLC Shape memory adhesives for apparel products
US11849791B1 (en) 2022-06-30 2023-12-26 Createme Technologies Inc. Methods of assembling apparel products having imine adhesives
US11857013B1 (en) 2022-06-30 2024-01-02 Createme Technologies Inc. Methods of assembling apparel products having shape memory adhesives
US11905440B1 (en) 2022-06-30 2024-02-20 Createme Technologies Inc. Disulfide adhesives for apparel products
US12084600B2 (en) 2020-03-23 2024-09-10 Covestro Deutschland Ag Use of essential oils for separating adhesive bonds

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904835A1 (de) * 1999-02-08 2000-08-10 Henkel Kgaa Lösbare Klebstoffe
DE19924138A1 (de) 1999-05-26 2000-11-30 Henkel Kgaa Lösbare Klebeverbindungen
DE19951599A1 (de) 1999-10-27 2001-05-23 Henkel Kgaa Verfahren zur adhesiven Trennung von Klebeverbunden
DE19961940A1 (de) * 1999-12-22 2001-08-02 Henkel Kgaa Lösbare Klebeverindungen
DE10037884A1 (de) 2000-08-03 2002-02-21 Henkel Kgaa Verfahren zur beschleunigten Klebstoffaushärtung
DE10037883A1 (de) 2000-08-03 2002-02-14 Henkel Kgaa Ferromagnetische Resonanzanregung und ihre Verwendung zur Erwärmung teilchengefüllter Substrate
FR2852965B1 (fr) * 2003-03-25 2005-06-03 Rescoll Soc Procede de demontage des revetements et assemblages colles programme par utilisation de primaires d'adhesion modifies
DE102008036713A1 (de) 2008-08-07 2010-02-11 Technische Universität Carolo-Wilhelmina Zu Braunschweig Verfahren zum Trennen zweier über zumindest eine Klebschicht miteinander verklebter Objekte
JP5596802B2 (ja) * 2010-03-17 2014-09-24 アクゾ ノーベル ケミカルズ インターナショナル ベスローテン フエンノートシャップ ポリスルフィドの解重合及びビスメルカプト−ジエーテルの調製のための方法
WO2012017307A1 (fr) 2010-08-05 2012-02-09 Council Of Scientific & Industrial Research Procédé d'élimination de polymères thermodurcis présents sur un substrat
JP6070128B2 (ja) * 2012-12-04 2017-02-01 横浜ゴム株式会社 硬化性樹脂組成物
US20200180232A1 (en) * 2017-08-03 2020-06-11 Hejatex Gmbh Method for bonding rubber and adhesive for bonding rubber
DE102018201470A1 (de) * 2018-01-31 2019-01-10 Carl Zeiss Smt Gmbh Lithographieanlage und verfahren
JP7517050B2 (ja) * 2020-10-07 2024-07-17 株式会社レゾナック 接着剤セット、フィルム、接着体、及び被着体の分離方法
JP7517052B2 (ja) * 2020-10-07 2024-07-17 株式会社レゾナック 接着剤セット、フィルム、接着体、及び被着体の分離方法
US20230235205A1 (en) * 2020-10-07 2023-07-27 Showa Denko Materials Co., Ltd. Adhesive set, film, bonded body, and method for separating adherend
JP7517051B2 (ja) * 2020-10-07 2024-07-17 株式会社レゾナック 接着剤セット、フィルム、接着体、及び被着体の分離方法
JP7537218B2 (ja) * 2020-10-08 2024-08-21 株式会社レゾナック 回路接続用接着剤フィルム、回路接続構造体及びその製造方法
JP7592295B2 (ja) * 2021-01-19 2024-12-02 国立研究開発法人物質・材料研究機構 ２段階熱応答性の組成物、硬化物、硬化物の製造方法、及び、異方性部材
JP7761248B2 (ja) * 2021-04-26 2025-10-28 国立研究開発法人物質・材料研究機構 エポキシ樹脂組成物、エポキシ樹脂硬化物、エポキシ樹脂分解性組成物、リサイクル硬化物、エポキシ樹脂硬化物の分解方法、リサイクル方法、単量体化合物、二量体化合物および三量体化合物とその硬化物
EP4452923A1 (fr) 2021-12-23 2024-10-30 metron eging GmbH Matériau composé, en particulier matériau composite
WO2023117111A1 (fr) 2021-12-23 2023-06-29 Hrovath Josef Andreas Matériau composite, procédé de production et procédé de séparation énergétiquement efficace du composite
CN115084518B (zh) * 2022-05-20 2024-11-01 清华大学深圳国际研究生院 负极粘结剂及其应用
EP4678678A1 (fr) 2023-03-03 2026-01-14 Toyobo Co., Ltd. Résine de polyester réticulée ayant une liaison disulfure
CN117701221B (zh) * 2023-12-25 2024-07-19 深圳市道丰宁科技有限公司 一种热熔胶黏剂及其制备方法
CN119081067B (zh) * 2024-08-30 2025-11-07 黑龙江省科学院石油化学研究院 一种含动态共价键的环氧树脂及其合成方法、自修复环氧结构胶粘剂的制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0236362A1 (fr) * 1985-09-18 1987-09-16 The Commonwealth Of Australia Compositions d'elimination d'agents d'etancheite
US4882399A (en) * 1987-08-21 1989-11-21 Polytechnic University Epoxy resins having reversible crosslinks
DE19521671C1 (de) * 1995-06-14 1997-09-18 Henkel Teroson Gmbh Recycling von ausgehärteten Polysulfid- und/oder Polymercaptan-Kleb-/Dichtstoffen

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7479288B2 (en) 2001-12-21 2009-01-20 Henkel Kommanditgesellschaft Auf Aktien Nanoparticulate preparation
US7651580B2 (en) 2001-12-21 2010-01-26 Henkel Kommanditgesellschaft Auf Aktien (Henkel Kgaa) Nanoparticulate preparation
US11437162B2 (en) * 2019-12-31 2022-09-06 Industrial Technology Research Institute Conductive material composition and conductive material prepared therefrom
US12084600B2 (en) 2020-03-23 2024-09-10 Covestro Deutschland Ag Use of essential oils for separating adhesive bonds
US11655397B1 (en) 2022-06-30 2023-05-23 CreateMe Technologies LLC Methods of assembling apparel products having cycloalkene adhesives
US11692111B1 (en) 2022-06-30 2023-07-04 CreateMe Technologies LLC Methods of disassembling apparel products having shape memory adhesives
US11542412B1 (en) 2022-06-30 2023-01-03 CreateMe Technologies LLC Methods of disassembling apparel products having cyclodextrin-azobenzene adhesives
US11542413B1 (en) 2022-06-30 2023-01-03 CreateMe Technologies LLC Methods of disassembling apparel products having imine adhesives
US11629272B1 (en) 2022-06-30 2023-04-18 CreateMe Technologies LLC Methods of assembling apparel products having thioester adhesives
US11632995B1 (en) * 2022-06-30 2023-04-25 CreateMe Technologies LLC Methods of assembling apparel products having disulfide adhesives
US11634616B1 (en) 2022-06-30 2023-04-25 CreateMe Technologies LLC Methods of assembling apparel products having boronate adhesives
US11653709B1 (en) * 2022-06-30 2023-05-23 CreateMe Technologies LLC Methods of disassembling apparel products having disulfide adhesives
US11530336B1 (en) 2022-06-30 2022-12-20 CreateMe Technologies LLC Methods of assembling apparel products having cyclodextrin-azobenzene adhesives
US11530340B1 (en) 2022-06-30 2022-12-20 CreateMe Technologies LLC Cyclodextrin-azobenzene adhesives for apparel products
US11713405B1 (en) 2022-06-30 2023-08-01 CreateMe Technologies LLC Methods of disassembling apparel products having thioester adhesives
US11712873B1 (en) 2022-06-30 2023-08-01 CreateMe Technologies LLC Boronate adhesives for apparel products
US11732159B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Methods of disassembling apparel products having boronate adhesives
US11730215B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Thioester adhesives for apparel products
US11730217B1 (en) 2022-06-30 2023-08-22 CreateMe Technologies LLC Methods of disassembling apparel products having cycloalkene adhesives
US11752234B1 (en) 2022-06-30 2023-09-12 CreateMe Technologies LLC Shape memory adhesives for apparel products
US11849791B1 (en) 2022-06-30 2023-12-26 Createme Technologies Inc. Methods of assembling apparel products having imine adhesives
US11857013B1 (en) 2022-06-30 2024-01-02 Createme Technologies Inc. Methods of assembling apparel products having shape memory adhesives
US11905440B1 (en) 2022-06-30 2024-02-20 Createme Technologies Inc. Disulfide adhesives for apparel products
CN115505098A (zh) * 2022-09-02 2022-12-23 中山大学 一种两性离子聚氨酯及其制备方法和应用

Also Published As

Publication number Publication date
DE19733643A1 (de) 1999-02-11
AU9069298A (en) 1999-03-01
EP1002007A1 (fr) 2000-05-24
AR010937A1 (es) 2000-07-12
JP2001512762A (ja) 2001-08-28
WO1999007774A1 (fr) 1999-02-18
ZA986945B (en) 1999-02-03

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