ATE174364T1 - Absorptionsverfahren zur verwerfung von reaktornebenprodukten und gewinnung von monomeren aus abgasströmen von olefinpolymerisationsverfahren - Google Patents
Absorptionsverfahren zur verwerfung von reaktornebenprodukten und gewinnung von monomeren aus abgasströmen von olefinpolymerisationsverfahrenInfo
- Publication number
- ATE174364T1 ATE174364T1 AT96909528T AT96909528T ATE174364T1 AT E174364 T1 ATE174364 T1 AT E174364T1 AT 96909528 T AT96909528 T AT 96909528T AT 96909528 T AT96909528 T AT 96909528T AT E174364 T1 ATE174364 T1 AT E174364T1
- Authority
- AT
- Austria
- Prior art keywords
- reactor
- absorption
- monomers
- stream
- byproduct
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 title abstract 9
- 239000006227 byproduct Substances 0.000 title abstract 6
- 239000000178 monomer Substances 0.000 title abstract 6
- 238000000034 method Methods 0.000 title abstract 5
- 238000006116 polymerization reaction Methods 0.000 title abstract 3
- 150000001336 alkenes Chemical class 0.000 title abstract 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 title 1
- 239000002904 solvent Substances 0.000 abstract 5
- 239000002912 waste gas Substances 0.000 abstract 3
- 238000004821 distillation Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000007789 gas Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/02—Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
- B01J8/24—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles according to "fluidised-bed" technique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/0035—Periodical feeding or evacuation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/001—Removal of residual monomers by physical means
- C08F6/005—Removal of residual monomers by physical means from solid polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
- B01J2208/00256—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles in a heat exchanger for the heat exchange medium separate from the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
- B01J2208/00274—Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
- B01J2208/00292—Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00743—Feeding or discharging of solids
- B01J2208/00761—Discharging
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Gas Separation By Absorption (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/398,349 US5521264A (en) | 1995-03-03 | 1995-03-03 | Gas phase olefin polymerization process with recovery of monomers from reactor vent gas by absorption |
| US08/591,314 US5681908A (en) | 1995-03-03 | 1996-01-25 | Absorption process for rejection of reactor byproducts and recovery of monomers from waste gas streams in olefin polymerization processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE174364T1 true ATE174364T1 (de) | 1998-12-15 |
Family
ID=27016217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT96909528T ATE174364T1 (de) | 1995-03-03 | 1996-02-26 | Absorptionsverfahren zur verwerfung von reaktornebenprodukten und gewinnung von monomeren aus abgasströmen von olefinpolymerisationsverfahren |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5681908A (de) |
| EP (1) | EP0813567B1 (de) |
| JP (1) | JPH11501317A (de) |
| KR (1) | KR19980702777A (de) |
| CN (1) | CN1066167C (de) |
| AT (1) | ATE174364T1 (de) |
| AU (1) | AU690445B2 (de) |
| CA (1) | CA2214073C (de) |
| DE (1) | DE69601126T2 (de) |
| WO (1) | WO1996027634A1 (de) |
Families Citing this family (51)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837037A (en) * | 1996-07-17 | 1998-11-17 | Texaco Inc | Gas handling for plastics liquefaction |
| ES2241278T3 (es) * | 1998-04-07 | 2005-10-16 | Exxonmobil Chemical Patents Inc. | Procedimiento de polimerizacion. |
| JP2000044669A (ja) * | 1998-08-04 | 2000-02-15 | Teijin Ltd | 芳香族ポリカーボネートの製造方法および真空捕集系 |
| DE19915106A1 (de) * | 1999-04-01 | 2000-10-05 | Elenac Gmbh | Verfahren zur Isolierung von Olefinen aus Polyolefinanlagen |
| BR9906019B1 (pt) * | 1999-12-30 | 2012-02-22 | processo para a polimerização e copolimerização de monÈmeros olefìnicos em reatores fase gás. | |
| US6593506B1 (en) | 2000-10-12 | 2003-07-15 | Exxonmobil Chemical Patents Inc. | Olefin recovery in a polyolefin production process |
| US6495609B1 (en) | 2000-11-03 | 2002-12-17 | Exxonmobil Chemical Patents Inc. | Carbon dioxide recovery in an ethylene to ethylene oxide production process |
| WO2003008459A1 (en) * | 2001-07-20 | 2003-01-30 | University Of Maryland, College Park | Method for production of multimodal polyolefins of tunable composition, molecular weight, and polydispersity |
| FR2827868A1 (fr) | 2001-07-30 | 2003-01-31 | Bp Chem Int Ltd | Procede et dispositif de fabrication en continu d'un polymere d'alcoylene aromatique |
| EP1491559B1 (de) * | 2002-03-29 | 2007-09-05 | Mitsui Chemicals, Inc. | Verfahren zur rückführung von abgas in einer polymerproduktionsanlage |
| US7041759B2 (en) * | 2002-11-20 | 2006-05-09 | The University Of Maryland, College Park | Method for the preparation of well-defined metal acetamidinate-based catalysts on solid supports |
| US7183364B2 (en) * | 2002-12-20 | 2007-02-27 | University Of Maryland, College Park | Process for preparation of polyolefins via degenerative transfer polymerization |
| US7541412B2 (en) * | 2002-12-20 | 2009-06-02 | University Of Maryland, College Park | Process for preparation of polyolefins via degenerative transfer polymerization |
| DE102004006817A1 (de) * | 2004-02-11 | 2005-09-01 | Basell Polyolefine Gmbh | Verfahren zum Herstellen von Polyolefinen in Suspension |
| US8513366B2 (en) * | 2005-03-17 | 2013-08-20 | University Of Maryland, College Park | Methods for modulated degenerative transfer living polymerization and isotactic-atactic stereoblock and stereogradient poly(olefins) thereby |
| US7868088B2 (en) * | 2005-03-17 | 2011-01-11 | University Of Maryland, College Park | Methods for modulated degenerative transfer living polymerization and isotactic-atactic stereoblock and stereogradient poly(olefins) thereby |
| FR2884247B1 (fr) * | 2005-04-11 | 2007-05-18 | Inst Francais Du Petrole | Procede et installation pour l'oligomerisation d'olefines mettant en oeuvre une separation membranaire |
| DE102005061576A1 (de) * | 2005-12-22 | 2007-06-28 | Wacker Chemie Ag | Rückgewinnung von Ethylen und Vinylacetat aus dem Restgasstrom der Vinylester-Ethylen-Mischpolymerisatherstellung |
| EP2016985A1 (de) * | 2007-07-16 | 2009-01-21 | Total Petrochemicals Research Feluy | Verfahren zur Optimierung der Trennung eines kohlenwasserstoffhaltigen Zufuhrstroms |
| EP2018899A1 (de) * | 2007-07-23 | 2009-01-28 | Total Petrochemicals Research Feluy | Verfahren zur Kühlung für Destillation und Polymerisation durch Absorptionskühlung |
| EP2083020A1 (de) * | 2008-01-18 | 2009-07-29 | Total Petrochemicals Research Feluy | Verfahren zur Monomerrückgewinnung bei einem Polymerisationsverfahren |
| US8524048B2 (en) * | 2010-10-05 | 2013-09-03 | Memc Electronic Materials, Inc. | Processes for recovering silane from heavy-ends separation operations |
| US8551298B2 (en) * | 2010-10-05 | 2013-10-08 | Memc Electronic Materials, Inc. | Processes for purifying silane |
| US8524044B2 (en) * | 2010-10-05 | 2013-09-03 | Memc Electronic Materials, Inc. | Systems for recovering silane from heavy-ends separation operations |
| US9180405B2 (en) | 2010-10-15 | 2015-11-10 | Chevron Phillips Chemical Company Lp | Ethylene recovery by absorption |
| US9108147B2 (en) | 2010-10-15 | 2015-08-18 | Chevron Phillips Chemical Company Lp | Component separations in polymerization |
| US8410329B2 (en) * | 2010-10-15 | 2013-04-02 | Chevron Phillips Chemical Company Lp | Ethylene separation |
| CA2828434C (en) * | 2011-03-08 | 2019-04-09 | Stacey HYDE | Process for recycling solvent used in an ethylene-based polymerization reaction and system therefor |
| WO2013101431A1 (en) | 2011-12-30 | 2013-07-04 | Memc Electronic Materials, Inc. | Processes and systems for purifying silane |
| EP2743278A1 (de) * | 2012-12-11 | 2014-06-18 | Basell Polyolefine GmbH | Verfahren zur Entgasung und zur Zwischenlagerung von Polyolefinpartikeln, die aus der Olefinpolymerisation erhalten wurden |
| CN103520946B (zh) | 2013-09-25 | 2015-11-25 | 杭州双安科技有限公司 | 用于在烯烃聚合物生产中回收排放气的系统和方法 |
| US10808999B2 (en) * | 2014-09-30 | 2020-10-20 | Dow Global Technologies Llc | Process for increasing ethylene and propylene yield from a propylene plant |
| US10640582B2 (en) * | 2015-12-15 | 2020-05-05 | Sabic Global Technologies B.V. | Olefin polymerization process |
| SG11201901027WA (en) * | 2016-08-11 | 2019-03-28 | Versalis Spa | Process for the purification of the solvent deriving from the production of elastomeric blends |
| CN108883343A (zh) * | 2017-07-26 | 2018-11-23 | 深圳市宏事达能源科技有限公司 | 一种气体分馏装置 |
| WO2019099134A1 (en) * | 2017-11-17 | 2019-05-23 | Exxonmobil Chemical Patents Inc. | Gas-phase olefin polymerization process |
| CN111295397B (zh) * | 2017-12-04 | 2022-03-04 | 博里利斯股份公司 | 一种在溶液聚合过程中回收烯烃的方法 |
| US11512157B2 (en) | 2017-12-04 | 2022-11-29 | Borealis Ag | Method of recovering olefins in a solution polymerisation process |
| FR3087353B1 (fr) * | 2018-10-18 | 2022-12-16 | Arkema France | Procede de traitement d'un effluent gazeux issu d'une decomposition pyrolytique d'un polymere |
| KR102383417B1 (ko) | 2018-12-10 | 2022-04-07 | 주식회사 엘지화학 | 에틸렌 올리고머화 반응 생성물의 분리방법 |
| US12291594B2 (en) * | 2019-06-24 | 2025-05-06 | Borealis Ag | Process for preparing polypropylene with improved recovery |
| CN111659149B (zh) * | 2020-06-16 | 2021-10-08 | 上海化工研究院有限公司 | 精馏塔、精馏系统及其用途 |
| CN111912170A (zh) * | 2020-07-24 | 2020-11-10 | 北方华锦化学工业股份有限公司 | 一种高密度聚乙烯装置驰放气回收综合利用的方法 |
| JP7366486B2 (ja) * | 2020-09-07 | 2023-10-23 | エルジー・ケム・リミテッド | オリゴマーの製造方法 |
| CN116472294A (zh) * | 2020-11-02 | 2023-07-21 | 陶氏环球技术有限责任公司 | 在聚烯烃生产期间控制吸收介质中的α-烯烃冷凝的方法 |
| EP4000723B1 (de) * | 2020-11-20 | 2025-07-09 | Borealis AG | Vorrichtung und verfahren zur herstellung eines zulaufstroms zur lösungspolymerisierung |
| EP4452919A1 (de) | 2021-12-23 | 2024-10-30 | Röhm GmbH | Verfahren zur herstellung von alkylmethacrylaten mit verbesserter ausbeute und verminderten emissionen flüchtiger organischer verbindungen |
| US20250177943A1 (en) * | 2022-02-25 | 2025-06-05 | Mitsubishi Heavy Industries, Ltd. | Plant |
| CN114887345B (zh) * | 2022-06-10 | 2025-01-28 | 拓烯科技(衢州)有限公司 | 一种4-甲基-1-戊烯分离装置和工艺 |
| CN114917608B (zh) * | 2022-06-30 | 2025-05-13 | 中国天辰工程有限公司 | 一种低能耗的丙烯寡聚体分离系统及分离方法 |
| CN121159750A (zh) * | 2025-11-21 | 2025-12-19 | 山东东岳高分子材料有限公司 | 聚偏氟乙烯连续聚合反应系统及方法 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB857259A (en) * | 1958-09-05 | 1960-12-29 | Phillips Petroleum Co | Recovery of hydrocarbon diluent from process off-gas containing same |
| US4009097A (en) * | 1974-03-21 | 1977-02-22 | Uop Inc. | Separation process |
| US3969470A (en) * | 1975-04-21 | 1976-07-13 | E. I. Du Pont De Nemours And Company | Process for recycling hydrogen when making blends of olefin copolymers |
| US4035167A (en) * | 1976-02-13 | 1977-07-12 | Continental Oil Company | Recovery of ethane and ethylene from gaseous mixtures |
| DE2967485D1 (en) * | 1978-06-13 | 1985-08-22 | Ici Plc | Process and apparatus for the removal of olefin monomer from olefin polymers |
| US4482687A (en) * | 1979-10-26 | 1984-11-13 | Union Carbide Corporation | Preparation of low-density ethylene copolymers in fluid bed reactor |
| US4405495A (en) * | 1980-06-30 | 1983-09-20 | Union Carbide Corporation | Catalyst impregnated on fine silica, process for preparing, and use for ethylene polymerization |
| US4372758A (en) * | 1980-09-02 | 1983-02-08 | Union Carbide Corporation | Degassing process for removing unpolymerized monomers from olefin polymers |
| CA1196482A (en) * | 1981-07-28 | 1985-11-12 | Robert G. Aronson | Fluidized bed discharge process |
| US4588790A (en) * | 1982-03-24 | 1986-05-13 | Union Carbide Corporation | Method for fluidized bed polymerization |
| US4832718A (en) * | 1982-05-03 | 1989-05-23 | Advanced Extraction Technologies, Inc. | Processing nitrogen-rich, hydrogen-rich, and olefin-rich gases with physical solvents |
| US4740222A (en) * | 1982-05-03 | 1988-04-26 | Advanced Extraction Technologies, Inc. | Recovery and purification of hydrogen from refinery and petrochemical off-gas streams |
| US4666998A (en) * | 1984-12-31 | 1987-05-19 | Mobil Oil Corporation | Closed loop recycle of vent gas in polymerization process |
| FR2598350B1 (fr) * | 1986-05-06 | 1989-11-17 | Bp Chimie Sa | Procede et dispositif pour degazer et pour transformer en granules des particules de polyolefines obtenues par polymerisation en phase gazeuse |
| US5019143A (en) * | 1987-09-23 | 1991-05-28 | Mehrta Yuv R | Low pressure noncryogenic processing for ethylene recovery |
| US5266276A (en) * | 1988-07-15 | 1993-11-30 | Bp Chemicals Limited | Apparatus for the gas-phase polymerization of olefins in a fluidized-bed reactor |
| FR2659338B1 (fr) * | 1990-03-09 | 1993-05-07 | Bp Chemicals Snc | Procedes et dispositifs de polymerisation catalytique d'alpha-olefines en phase gazeuse. |
| US5326929A (en) * | 1992-02-19 | 1994-07-05 | Advanced Extraction Technologies, Inc. | Absorption process for hydrogen and ethylene recovery |
| US5220097A (en) * | 1992-02-19 | 1993-06-15 | Advanced Extraction Technologies, Inc. | Front-end hydrogenation and absorption process for ethylene recovery |
| DE4217611A1 (de) * | 1992-05-27 | 1993-12-02 | Linde Ag | Verfahren zur Gewinnung leichter C¶2¶¶+¶-Kohlenwasserstoffe aus einem Spaltgas |
| US5376742A (en) * | 1993-09-23 | 1994-12-27 | Quantum Chemical Corporation | Monomer recovery in gas phase fluid bed olefin polymerization |
-
1996
- 1996-01-25 US US08/591,314 patent/US5681908A/en not_active Expired - Lifetime
- 1996-02-26 WO PCT/US1996/002587 patent/WO1996027634A1/en not_active Ceased
- 1996-02-26 CA CA002214073A patent/CA2214073C/en not_active Expired - Fee Related
- 1996-02-26 EP EP96909528A patent/EP0813567B1/de not_active Expired - Lifetime
- 1996-02-26 DE DE69601126T patent/DE69601126T2/de not_active Expired - Fee Related
- 1996-02-26 JP JP8526908A patent/JPH11501317A/ja active Pending
- 1996-02-26 CN CN96193482A patent/CN1066167C/zh not_active Expired - Fee Related
- 1996-02-26 AT AT96909528T patent/ATE174364T1/de not_active IP Right Cessation
- 1996-02-26 KR KR1019970706184A patent/KR19980702777A/ko not_active Withdrawn
- 1996-02-26 AU AU52989/96A patent/AU690445B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE69601126T2 (de) | 1999-07-22 |
| CA2214073A1 (en) | 1996-09-12 |
| JPH11501317A (ja) | 1999-02-02 |
| CN1066167C (zh) | 2001-05-23 |
| CA2214073C (en) | 2001-12-18 |
| KR19980702777A (ko) | 1998-08-05 |
| US5681908A (en) | 1997-10-28 |
| MX9706673A (es) | 1998-06-30 |
| CN1182443A (zh) | 1998-05-20 |
| AU5298996A (en) | 1996-09-23 |
| DE69601126D1 (de) | 1999-01-21 |
| AU690445B2 (en) | 1998-04-23 |
| EP0813567A1 (de) | 1997-12-29 |
| WO1996027634A1 (en) | 1996-09-12 |
| EP0813567B1 (de) | 1998-12-09 |
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