ES2045456T3 - Proceso para la polimerizacion de alfa-olefinas en fase gaseosa en presencia de un retardador de la actividad. - Google Patents
Proceso para la polimerizacion de alfa-olefinas en fase gaseosa en presencia de un retardador de la actividad.Info
- Publication number
- ES2045456T3 ES2045456T3 ES89308848T ES89308848T ES2045456T3 ES 2045456 T3 ES2045456 T3 ES 2045456T3 ES 89308848 T ES89308848 T ES 89308848T ES 89308848 T ES89308848 T ES 89308848T ES 2045456 T3 ES2045456 T3 ES 2045456T3
- Authority
- ES
- Spain
- Prior art keywords
- polymerization
- alpha
- olephins
- gaseous phase
- reactor
- 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 - Lifetime
Links
- 238000006116 polymerization reaction Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title abstract 2
- 239000007792 gaseous phase Substances 0.000 title 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 230000004308 accommodation Effects 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 150000001408 amides Chemical class 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 239000003112 inhibitor Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000004711 α-olefin Substances 0.000 abstract 1
Classifications
-
- 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
- C08F2/00—Processes of polymerisation
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S526/00—Synthetic resins or natural rubbers -- part of the class 520 series
- Y10S526/901—Monomer polymerized in vapor state in presence of transition metal containing catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Polyethers (AREA)
Abstract
UN PROCESO PARA LA POLIMERIZACION CONTINUA DE UNA O MAS ALFA-OLEFINAS CON UN METAL CARTALIZADOR DE TRANSICION EN UN REACTOR QUE TIENE UN ALOJAMIENTO AJUSTADO MECANICAMENTE O FLUIDIFICADO, EN EL CUAL UNA CANTIDAD MUY PEQUEÑA DE UN RETARDADOR DE ACTIVIDAD GENERALMENTE MENOR DE 0.1 PPM ES INTRODUCIDO CONTINUAMENTE EN EL REACTOR EN UNA CANTIDAD DE FLUJO QUE VARIA CON EL TIEMPO APRA MANTENER SUSTANCIALMENTE CONSTANTE, BIEN LA CARENCIA DE POLIMERIZACION O EL CONTENIDO DE METAL DE TRANSICION EN EL POLIMERO PRODUCIDO, LOS RETARDADORES DE ACTIVIDAD INDICADOS INCLUYEN INHIBIDORES DE POLIMERIZACION, TALES COMO POR EJEMPLO OXIGENO, ALCOHOLES, MONOXIDO DE CARBONO Y DIOXIDO DE CARBONO Y COMPONENTES CLORANTES DE ELECTRONES TALES COMO AMIDAS Y ETERES.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8812066A FR2636335B1 (fr) | 1988-09-13 | 1988-09-13 | Procede de polymerisation d'alpha-olefine en phase gazeuse en presence d'un agent ralentisseur d'activite |
| FR898905846A FR2646426B2 (fr) | 1988-09-13 | 1989-04-27 | Procede et appareillage de polymerisation d'alpha-olefine en phase gazeuse en presence d'un agent ralentisseur d'activite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2045456T3 true ES2045456T3 (es) | 1994-01-16 |
Family
ID=26226876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES89308848T Expired - Lifetime ES2045456T3 (es) | 1988-09-13 | 1989-08-31 | Proceso para la polimerizacion de alfa-olefinas en fase gaseosa en presencia de un retardador de la actividad. |
Country Status (15)
| Country | Link |
|---|---|
| US (1) | US5066736A (es) |
| EP (1) | EP0359444B1 (es) |
| JP (1) | JP2981239B2 (es) |
| KR (1) | KR0147070B1 (es) |
| AU (1) | AU620641B2 (es) |
| CA (1) | CA1333440C (es) |
| DE (1) | DE68910627T2 (es) |
| DK (1) | DK449189A (es) |
| EG (1) | EG18770A (es) |
| ES (1) | ES2045456T3 (es) |
| FI (1) | FI96032C (es) |
| FR (1) | FR2646426B2 (es) |
| MY (1) | MY104197A (es) |
| NO (1) | NO174930C (es) |
| NZ (1) | NZ230486A (es) |
Families Citing this family (77)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5473027A (en) * | 1986-06-20 | 1995-12-05 | Chevron Chemical Company | Production of blow molding polyethylene resin |
| JP3204688B2 (ja) * | 1991-06-25 | 2001-09-04 | 出光石油化学株式会社 | エチレン重合体の製造方法 |
| DE4019053A1 (de) * | 1990-06-15 | 1991-12-19 | Basf Ag | Polymerisate des propylens mit breitem molmassenverhaeltnis q |
| FR2665704B1 (fr) * | 1990-08-07 | 1994-04-08 | Bp Chemicals Snc | Procede pour arreter une reaction de (co-)polymerisation effectuee a l'aide d'un catalyseur a base d'oxyde de chrome. |
| US5336738A (en) * | 1990-08-07 | 1994-08-09 | Bp Chemicals Limited | Kill-gas introduction to a fluidized bed reactor containing chromium oxide catalyst |
| GB9103527D0 (en) * | 1991-02-20 | 1991-04-10 | Exxon Chemical Patents Inc | Hp catalyst killer |
| IT1246614B (it) | 1991-06-03 | 1994-11-24 | Himont Inc | Procedimento per la polimerizzazione in fase gas delle olefine |
| US5227438A (en) * | 1991-09-24 | 1993-07-13 | Union Carbide Chemicals & Plastics Technology Corporation | Process for the slowdown or termination of polymerization |
| EP0549252A1 (en) * | 1991-12-23 | 1993-06-30 | BP Chemicals Limited | Process for the gas-phase polymerisation of alpha-olefins in a fluidized-bed reactor |
| IT1262933B (it) * | 1992-01-31 | 1996-07-22 | Montecatini Tecnologie Srl | Processo per la polimerizzazione in fase gas di alfa-olefine |
| CA2127822A1 (en) | 1993-07-13 | 1995-01-14 | Yoshinori Morita | Process for gas phase polymerization of olefin |
| US5733988A (en) * | 1994-06-29 | 1998-03-31 | Union Carbide Chemicals & Plastics Technology Corporation | Process for reducing polymer build-up in recycle lines and heat exchangers during polymerizations employing butadiene, isoprene, and/or styrene |
| US5625012A (en) * | 1994-06-29 | 1997-04-29 | Union Carbide Chemicals & Plastics Technology Corporation | Process for reducing polymer build-up in recycle lines and heat exchangers during polymerization of alpha olefins |
| US5548042A (en) * | 1994-08-19 | 1996-08-20 | Union Carbide Chemical & Plastics Technology Corporation | Process for the production of polypropylene |
| US5525678A (en) * | 1994-09-22 | 1996-06-11 | Mobil Oil Corporation | Process for controlling the MWD of a broad/bimodal resin produced in a single reactor |
| DE69633400T2 (de) * | 1995-12-01 | 2005-02-17 | Chevron Phillips Chemical Co. Lp, The Woodlands | Polymerisationsverfahren |
| DE19621838A1 (de) * | 1996-05-31 | 1997-12-04 | Basf Ag | Verfahren zur Herstellung von Polymerisaten von C¶2¶- bis C¶1¶¶2¶-Alkenen unter Zusatz eines Reaktionsverzögerers |
| AU4913597A (en) * | 1996-11-01 | 1998-05-29 | Union Carbide Chemicals & Plastics Technology Corporation | Reduction of fouling in olefin polymerization systems |
| US5731381A (en) * | 1996-11-01 | 1998-03-24 | Union Carbide Chemicals & Plastics Technology Corporation | Termination of gas phase polymerizations of conjugated dienes, vinyl-substituted aromatic compounds and mixtures thereof |
| US5844054A (en) * | 1997-03-21 | 1998-12-01 | Samples; Paul Kevin | Process control in the presence of chromium based catalysts |
| DE19800020A1 (de) * | 1998-01-05 | 1999-07-08 | Basf Ag | Kontinuierliches Gasphasenpolymerisationsverfahren |
| US6977283B1 (en) | 1998-04-07 | 2005-12-20 | Exxonmobil Chemical Patents Inc. | Polymerization process |
| EP0959081A1 (en) * | 1998-05-19 | 1999-11-24 | Bp Chemicals S.N.C. | Gas phase polymerisation process |
| EP0959082A1 (en) | 1998-05-19 | 1999-11-24 | Bp Chemicals S.N.C. | Polymerisation process |
| US7354880B2 (en) * | 1998-07-10 | 2008-04-08 | Univation Technologies, Llc | Catalyst composition and methods for its preparation and use in a polymerization process |
| ATE544789T1 (de) | 1998-10-27 | 2012-02-15 | Westlake Longview Corp | Verfahren zur olefinpolymerisation, neue polyethylene und daraus hergestellte folien und artikel |
| MXPA01006188A (es) * | 1998-12-17 | 2005-04-19 | Univation Tech Llc | Modificador de catalizador y su uso en la polimerizacion de olefina (s). |
| JP2002540265A (ja) | 1999-03-30 | 2002-11-26 | イーストマン ケミカル カンパニー | ポリオレフィンの製造方法 |
| US6313236B1 (en) | 1999-03-30 | 2001-11-06 | Eastman Chemical Company | Process for producing polyolefins |
| US6300432B1 (en) | 1999-03-30 | 2001-10-09 | Eastman Chemical Company | Process for producing polyolefins |
| US6288181B1 (en) | 1999-03-30 | 2001-09-11 | Eastman Chemical Company | Process for producing polyolefins |
| WO2001016189A1 (en) | 1999-08-31 | 2001-03-08 | Eastman Chemical Company | Process for producing polyolefins |
| US6191238B1 (en) | 1999-08-31 | 2001-02-20 | Eastman Chemical Company | Process for producing polyolefins |
| US6187879B1 (en) | 1999-08-31 | 2001-02-13 | Eastman Chemical Company | Process for producing polyolefins |
| JP3860702B2 (ja) * | 2000-03-16 | 2006-12-20 | 株式会社プライムポリマー | ポリオレフィンの製造方法および気相重合装置 |
| EP1207170A1 (en) * | 2000-11-20 | 2002-05-22 | BP Chemicals S.N.C. | Process for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor |
| US6593267B2 (en) | 2000-12-18 | 2003-07-15 | Univation Technologies, Llc | Method for preparing a supported catalyst system and its use in a polymerization process |
| US6933258B2 (en) * | 2000-12-19 | 2005-08-23 | Univation Technologies, L.L.C. | Catalyst composition and methods for its preparation and use in a polymerization process |
| US6365681B1 (en) | 2001-01-16 | 2002-04-02 | Union Carbide Chemicals & Plastics Technology Corporation | Preventing upsets in polymerization reactors |
| DE10156202A1 (de) * | 2001-11-15 | 2003-06-05 | Basell Polyolefine Gmbh | Kontinuierliches Gasphasenpolymerisationsverfahren |
| US6846884B2 (en) * | 2002-09-27 | 2005-01-25 | Union Carbide Chemicals & Plastics Technology Corporation | Control of resin properties |
| BR0317761A (pt) * | 2002-12-27 | 2005-11-22 | Univation Tech Llc | Processos para transição entre catalisadores de polimerização de sìtio único com base em alumoxano e ziegler-natta |
| CN100351275C (zh) * | 2003-03-21 | 2007-11-28 | 陶氏环球技术公司 | 形态控制的烯烃聚合方法 |
| US6759489B1 (en) | 2003-05-20 | 2004-07-06 | Eastern Petrochemical Co. | Fluidized bed methods for making polymers |
| BRPI0413962B1 (pt) | 2003-09-23 | 2021-02-02 | Dow Global Technologies Inc | processo para a polimerização de etileno em fase gasosa |
| US7238756B2 (en) * | 2003-10-15 | 2007-07-03 | Univation Technologies, Llc | Polymerization process and control of polymer composition properties |
| US6828395B1 (en) | 2003-10-15 | 2004-12-07 | Univation Technologies, Llc | Polymerization process and control of polymer composition properties |
| US20050148742A1 (en) * | 2004-01-02 | 2005-07-07 | Hagerty Robert O. | Method for controlling sheeting in gas phase reactors |
| US20070073012A1 (en) * | 2005-09-28 | 2007-03-29 | Pannell Richard B | Method for seed bed treatment before a polymerization reaction |
| US7985811B2 (en) * | 2004-01-02 | 2011-07-26 | Univation Technologies, Llc | Method for controlling sheeting in gas phase reactors |
| US7683140B2 (en) | 2004-05-20 | 2010-03-23 | Univation Technologies, Llc | Method for determining temperature value indicative of resin stickiness from data generated by polymerization reaction monitoring |
| US7754830B2 (en) | 2004-05-20 | 2010-07-13 | Univation Technologies, Llc | Polymerization reaction monitoring with determination of induced condensing agent concentration for preventing discontinuity events |
| US7858719B2 (en) * | 2004-05-20 | 2010-12-28 | Exxonmobil Chemical Patents Inc. | Polymerization process |
| ATE461225T1 (de) | 2004-10-14 | 2010-04-15 | Basell Poliolefine Srl | Verfahren zur gasphasenpolymerisation von olefinen |
| WO2006107373A1 (en) | 2005-03-31 | 2006-10-12 | Exxonmobil Chemical Patents Inc. | Processes for producing high density polyethylene |
| AU2007293505A1 (en) * | 2006-09-07 | 2008-03-13 | Univation Technologies, Llc | Methods for determining temperature value indicative of resin stickiness from data generated by polymerization reaction monitoring |
| MX2009002495A (es) * | 2006-09-07 | 2009-05-22 | Univation Tech Llc | Metodos para determinacion en linea del grado de pegajosidad de resina usando un modelo para la reduccion de la temperatura de inicio de fusion. |
| BR122018012418B1 (pt) | 2006-09-21 | 2019-09-24 | Union Carbide Chemicals & Plastics Technology Llc. | Método para controlar um processo de produção de uma composição de polímero |
| JP5519289B2 (ja) | 2006-11-30 | 2014-06-11 | ウエストレイク ロングビュー コーポレイション | グリッドの汚れを検出する流速又は圧力センサーを備えた流動床オレフィン重合反応器用のガス分配プレート |
| CN101802019B (zh) * | 2007-08-16 | 2014-01-08 | 尤尼威蒂恩技术有限责任公司 | 连续性添加剂及其在聚合工艺中的用途 |
| CN102272165B (zh) | 2009-01-08 | 2013-08-28 | 尤尼威蒂恩技术有限责任公司 | 用于聚烯烃聚合方法的添加剂 |
| WO2010080871A1 (en) | 2009-01-08 | 2010-07-15 | Univation Technologies, Llc | Additive for gas phase polymerization processes |
| CN102741301B (zh) | 2009-09-11 | 2014-10-08 | 巴塞尔聚烯烃意大利有限责任公司 | 烯烃的气相聚合方法 |
| US8536289B2 (en) | 2009-12-29 | 2013-09-17 | Basell Polyolefine Gmbh | Process for the production of polyolefin films |
| KR101789989B1 (ko) | 2010-09-28 | 2017-10-25 | 바젤 폴리올레핀 게엠베하 | 중합 반응기에 정전기 방지 화합물을 공급하는 방법 |
| WO2012041810A1 (en) | 2010-09-28 | 2012-04-05 | Basell Polyolefine Gmbh | Method for feeding an antistatic compound to a polymerization reactor |
| WO2012087560A1 (en) | 2010-12-22 | 2012-06-28 | Univation Technologies, Llc | Additive for polyolefin polymerization processes |
| EP2610269A1 (en) | 2011-12-28 | 2013-07-03 | Saudi Basic Industries Corporation | Catalyst composition and method for preparing the same |
| EP2711379A1 (en) | 2012-09-21 | 2014-03-26 | Basell Poliolefine Italia S.r.l. | Process for the gas-phase polymerization of olefins |
| EP2754678A1 (en) | 2013-01-14 | 2014-07-16 | Basell Poliolefine Italia S.r.l. | Process for the preparation of ethylene polymers |
| EP2842912A1 (en) | 2013-08-26 | 2015-03-04 | Basell Poliolefine Italia S.r.l. | Method for improving the operability of an olefin polymerization reactor |
| US9809656B2 (en) | 2013-12-09 | 2017-11-07 | Univation Technologies, Llc | Feeding polymerization additives to polymerization processes |
| KR102056017B1 (ko) | 2015-08-04 | 2020-01-14 | 바셀 폴리올레핀 이탈리아 에스.알.엘 | 올레핀 중합용 예비 중합 촉매 성분 |
| CA3055722C (en) | 2017-03-09 | 2021-06-15 | Exxonmobil Chemical Patents Inc. | Process for producing polyethylene polymers |
| US11820841B2 (en) | 2020-01-28 | 2023-11-21 | Exxonmobil Chemical Patents Inc. | Reducing accumulation of C6+ hydrocarbon components in polyolefin gas-phase reactors |
| US12534554B2 (en) | 2020-02-26 | 2026-01-27 | Exxonmobil Chemical Patents Inc. | Highly efficient C6 inert vent for gas phase polyethylene production |
| KR102513518B1 (ko) | 2020-12-23 | 2023-03-22 | 디엘케미칼 주식회사 | 메탈로센 올레핀 중합 공정용 대전방지제를 이용한 올레핀 중합 방법 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1420408A1 (de) * | 1957-02-19 | 1968-10-10 | Bayer Ag | Verfahren zur Polymerisation von AEthylen |
| US3067190A (en) * | 1960-01-12 | 1962-12-04 | Ruhrchemie Ag | Process for the polymerization of aliphatic olefins |
| US3562357A (en) * | 1968-12-11 | 1971-02-09 | Mobil Oil Corp | Method for increasing yield of copolymers of butene-1 with long chain olefins |
| EP0004417B2 (en) * | 1978-03-23 | 1990-02-28 | Imperial Chemical Industries Plc | Gas-phase olefin polymerisation system and process for operating it |
| DE3366573D1 (en) * | 1982-06-24 | 1986-11-06 | Bp Chimie Sa | Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed |
| FR2566781B1 (fr) * | 1984-06-28 | 1986-11-14 | Bp Chimie Sa | Procede de polymerisation ou de copolymerisation d'alpha-olefines en lit fluidise, en presence d'un systeme catalytique ziegler-natta |
| SU1249025A1 (ru) * | 1984-10-01 | 1986-08-07 | Предприятие П/Я В-8296 | Способ управлени процессом полимеризации или сополимеризации альфа-олефинов в газовой фазе |
| JPS61151211A (ja) * | 1984-12-24 | 1986-07-09 | Toa Nenryo Kogyo Kk | エチレンの共重合方法 |
| US4649128A (en) * | 1985-11-21 | 1987-03-10 | National Distillers And Chemical Corporation | Deactivator for olefin polymerization catalyst |
| US4956426A (en) * | 1986-07-24 | 1990-09-11 | Union Carbide Chemicals And Plastics Company Inc. | Process for controlled polymerization of stereospecific alpha-olefins having preselected isotacticity |
| US4727125A (en) * | 1986-11-03 | 1988-02-23 | Hercules Incorporated | Thermally activated two component metathesis catalyst system |
| FR2618786B1 (fr) * | 1987-07-31 | 1989-12-01 | Bp Chimie Sa | Procede de polymerisation d'olefines en phase gazeuse dans un reacteur a lit fluidise |
| US4803251A (en) * | 1987-11-04 | 1989-02-07 | Union Carbide Corporation | Method for reducing sheeting during polymerization of alpha-olefins |
-
1989
- 1989-04-27 FR FR898905846A patent/FR2646426B2/fr not_active Expired - Lifetime
- 1989-08-29 NZ NZ230486A patent/NZ230486A/xx unknown
- 1989-08-31 EP EP89308848A patent/EP0359444B1/en not_active Expired - Lifetime
- 1989-08-31 ES ES89308848T patent/ES2045456T3/es not_active Expired - Lifetime
- 1989-08-31 AU AU40994/89A patent/AU620641B2/en not_active Ceased
- 1989-08-31 DE DE89308848T patent/DE68910627T2/de not_active Expired - Fee Related
- 1989-09-05 CA CA000610287A patent/CA1333440C/en not_active Expired - Fee Related
- 1989-09-05 NO NO893562A patent/NO174930C/no unknown
- 1989-09-05 US US07/403,187 patent/US5066736A/en not_active Expired - Lifetime
- 1989-09-06 MY MYPI89001215A patent/MY104197A/en unknown
- 1989-09-11 EG EG44489A patent/EG18770A/xx active
- 1989-09-12 DK DK449189A patent/DK449189A/da not_active Application Discontinuation
- 1989-09-12 KR KR1019890013296A patent/KR0147070B1/ko not_active Expired - Fee Related
- 1989-09-12 JP JP1234818A patent/JP2981239B2/ja not_active Expired - Fee Related
- 1989-09-13 FI FI894325A patent/FI96032C/fi active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DK449189A (da) | 1990-03-14 |
| AU620641B2 (en) | 1992-02-20 |
| NO893562L (no) | 1990-03-14 |
| DE68910627T2 (de) | 1994-02-24 |
| AU4099489A (en) | 1990-03-22 |
| FI96032C (fi) | 1996-04-25 |
| JPH02113004A (ja) | 1990-04-25 |
| EP0359444B1 (en) | 1993-11-10 |
| KR0147070B1 (ko) | 1998-08-17 |
| NO174930B (no) | 1994-04-25 |
| NO174930C (no) | 1994-08-03 |
| CA1333440C (en) | 1994-12-06 |
| NO893562D0 (no) | 1989-09-05 |
| FR2646426B2 (fr) | 1991-08-16 |
| HK1007318A1 (en) | 1999-04-09 |
| US5066736A (en) | 1991-11-19 |
| NZ230486A (en) | 1990-10-26 |
| FR2646426A2 (fr) | 1990-11-02 |
| FI894325L (fi) | 1990-03-14 |
| FI96032B (fi) | 1996-01-15 |
| MY104197A (en) | 1994-02-28 |
| JP2981239B2 (ja) | 1999-11-22 |
| KR900004766A (ko) | 1990-04-13 |
| DE68910627D1 (de) | 1993-12-16 |
| FI894325A0 (fi) | 1989-09-13 |
| EP0359444A1 (en) | 1990-03-21 |
| EG18770A (en) | 1994-03-30 |
| DK449189D0 (da) | 1989-09-12 |
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