FR2628110B1 - Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparation - Google Patents
Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparationInfo
- Publication number
- FR2628110B1 FR2628110B1 FR8802900A FR8802900A FR2628110B1 FR 2628110 B1 FR2628110 B1 FR 2628110B1 FR 8802900 A FR8802900 A FR 8802900A FR 8802900 A FR8802900 A FR 8802900A FR 2628110 B1 FR2628110 B1 FR 2628110B1
- Authority
- FR
- France
- Prior art keywords
- catalyst
- ziegler
- support
- magnesium chloride
- natta
- 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
Links
- 239000003054 catalyst Substances 0.000 title abstract 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 title abstract 4
- 150000001336 alkenes Chemical class 0.000 title abstract 2
- 229910001629 magnesium chloride Inorganic materials 0.000 title abstract 2
- 239000002245 particle Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000006116 polymerization reaction Methods 0.000 title 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 150000002148 esters Chemical group 0.000 abstract 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract 2
- 239000001257 hydrogen Substances 0.000 abstract 2
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 abstract 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- LCKIEQZJEYYRIY-UHFFFAOYSA-N Titanium ion Chemical compound [Ti+4] LCKIEQZJEYYRIY-UHFFFAOYSA-N 0.000 abstract 1
- 230000003213 activating effect Effects 0.000 abstract 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000012798 spherical particle Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 238000005406 washing Methods 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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
-
- 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
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/647—Catalysts containing a specific non-metal or metal-free compound
- C08F4/649—Catalysts containing a specific non-metal or metal-free compound organic
-
- 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
- C08F2410/00—Features related to the catalyst preparation, the catalyst use or to the deactivation of the catalyst
- C08F2410/06—Catalyst characterized by its size
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (18)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8802900A FR2628110B1 (fr) | 1988-03-03 | 1988-03-03 | Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparation |
| US07/313,467 US4960741A (en) | 1988-03-03 | 1989-02-22 | Ziegler-Natta catalyst |
| EP89301809A EP0336545B1 (fr) | 1988-03-03 | 1989-02-23 | Catalyseur Ziegler-Natta |
| DE68922335T DE68922335T2 (de) | 1988-03-03 | 1989-02-23 | Ziegler-Natta-Katalysator. |
| AT89301809T ATE121756T1 (de) | 1988-03-03 | 1989-02-23 | Ziegler-natta-katalysator. |
| ES89301809T ES2070904T3 (es) | 1988-03-03 | 1989-02-23 | Catalizador ziegler-natta. |
| NO890786A NO174626C (no) | 1988-03-03 | 1989-02-24 | Foraktivert bærer, fremgangsmåte for fremstilling av denne samt katalysator og fremstilling av katalysatoren |
| CA000592225A CA1330338C (fr) | 1988-03-03 | 1989-02-27 | Catalyseur ziegler-natta |
| AU30832/89A AU625873B2 (en) | 1988-03-03 | 1989-02-28 | Ziegler-natta catalyst, support therefore and polymerisation therewith |
| JP1048707A JP2810685B2 (ja) | 1988-03-03 | 1989-03-02 | チーグラー―ナッタ触媒 |
| DK100889A DK100889A (da) | 1988-03-03 | 1989-03-02 | Ziegler-natta katalysator og fremgangsmaade til fremstilling af denne |
| CN89101025A CN1016609B (zh) | 1988-03-03 | 1989-03-02 | 齐格勒-纳塔型催化剂 |
| CN91111840A CN1036852C (zh) | 1988-03-03 | 1989-03-02 | 烯烃聚合催化剂的预活化载体及其制备方法 |
| KR1019890002597A KR0142196B1 (ko) | 1988-03-03 | 1989-03-03 | 지글러-나타형 촉매 및 이의 제조방법 |
| FI891028A FI96612C (fi) | 1988-03-03 | 1989-03-03 | Ziegler-Natta-katalysaattori |
| MYPI89000267A MY103836A (en) | 1988-03-03 | 1989-03-03 | Ziegler-natta catalyst. |
| CS914012A CS401291A3 (en) | 1988-03-03 | 1991-12-23 | Ziegler-natt catalyst |
| HK98105550A HK1006572A1 (en) | 1988-03-03 | 1998-06-17 | Ziegler-natta catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8802900A FR2628110B1 (fr) | 1988-03-03 | 1988-03-03 | Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2628110A1 FR2628110A1 (fr) | 1989-09-08 |
| FR2628110B1 true FR2628110B1 (fr) | 1994-03-25 |
Family
ID=9363995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8802900A Expired - Fee Related FR2628110B1 (fr) | 1988-03-03 | 1988-03-03 | Catalyseur de polymerisation d'olefines de type ziegler-natta, supporte sur des particules spheriques de chlorure de magnesium, et procede de preparation |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US4960741A (fr) |
| EP (1) | EP0336545B1 (fr) |
| JP (1) | JP2810685B2 (fr) |
| KR (1) | KR0142196B1 (fr) |
| CN (1) | CN1016609B (fr) |
| AT (1) | ATE121756T1 (fr) |
| AU (1) | AU625873B2 (fr) |
| CA (1) | CA1330338C (fr) |
| CS (1) | CS401291A3 (fr) |
| DE (1) | DE68922335T2 (fr) |
| DK (1) | DK100889A (fr) |
| ES (1) | ES2070904T3 (fr) |
| FI (1) | FI96612C (fr) |
| FR (1) | FR2628110B1 (fr) |
| HK (1) | HK1006572A1 (fr) |
| MY (1) | MY103836A (fr) |
| NO (1) | NO174626C (fr) |
Families Citing this family (97)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2629461B1 (fr) * | 1988-03-31 | 1993-05-07 | Bp Chimie Sa | Catalyseur de (co)polymerisation du propylene, supporte sur des particules spheriques de chlorure de magnesium et enrobe par du polypropylene, et procedes de preparation |
| US5137996A (en) * | 1988-03-31 | 1992-08-11 | Bp Chemicals Limited | Ziegler-natta catalyst |
| IT1230134B (it) * | 1989-04-28 | 1991-10-14 | Himont Inc | Componenti e catalizzatori per la polimerizzazione di olefine. |
| FR2649708B1 (fr) * | 1989-07-17 | 1991-10-25 | Bp Chem Int Ltd | Procede de fabrication en phase gazeuse de copolymeres du propylene a l'aide d'un systeme catalytique de haute activite |
| FR2651234B1 (fr) * | 1989-08-29 | 1993-03-12 | Bp Chem Int Ltd | Procede de fabrication en phase gazeuse de copolymeres du propylene a l'aide d'un systeme catalytique de haute activite. |
| FR2656315B1 (fr) * | 1989-12-22 | 1992-04-17 | Bp Chemicals Snc | Procede de preparation d'un catalyseur a base de zirconium supporte sur du chlorure de magnesium, et utilisation du catalyseur dans la polymerisation des olefines. |
| FR2656314B1 (fr) * | 1989-12-22 | 1992-04-17 | Bp Chemicals Snc | Catalyseur a base de zirconium supporte sur du chlorure de magnesium, procede de preparation et utilisation du catalyseur dans la polymerisation des olefines. |
| FR2656614B1 (fr) * | 1990-01-03 | 1993-05-07 | Bp Chemicals Snc | Procede de preparation d'un catalyseur de type ziegler-natta a base de vanadium, supporte sur un chlorure de magnesium. |
| US5252688A (en) * | 1990-01-03 | 1993-10-12 | Bp Chemicals Limited | Process for preparing a Ziegler-Natta type catalyst |
| FR2656615B1 (fr) * | 1990-01-04 | 1993-05-07 | Bp Chemicals Snc | Procede de preparation d'un catalyseur de type ziegler-watta a base de vanadium et de titane, supporte sur un chlorure de magnesium. |
| FR2665451B1 (fr) * | 1990-08-03 | 1994-04-08 | Bp Chemicals Snc | Procede de fabrication en phase gazeuse de polymeres ou de copolymeres de l'ethylene a l'aide d'un systeme catalytique de haute activite et produits obtenus. |
| FR2669933A1 (fr) * | 1990-12-04 | 1992-06-05 | Bp Chemicals Snc | Procede de preparation d'un catalyseur de type ziegler-natta a base de vanadium et de titane supporte sur un chlorure de magnesium. |
| FR2669640B1 (fr) * | 1990-11-28 | 1994-05-06 | Bp Chemicals Snc | Procede de preparation d'un catalyseur de type ziegler-natta a base de titane supporte sur un chlorure de magnesium. |
| EP0492788A3 (en) * | 1990-11-28 | 1992-12-02 | Bp Chemicals Limited | Process for preparing a ziegler-natta type catalyst |
| EP0493637A1 (fr) * | 1990-12-31 | 1992-07-08 | Bp Chemicals Snc | Procédé de (co)polymérisation d'éthylène |
| FR2672606A1 (fr) * | 1991-02-07 | 1992-08-14 | Bp Chemicals Snc | Procede de preparation d'un catalyseur a base de vanadium et de titane. |
| IT1246614B (it) * | 1991-06-03 | 1994-11-24 | Himont Inc | Procedimento per la polimerizzazione in fase gas delle olefine |
| FR2695130B1 (fr) * | 1992-08-26 | 1994-10-28 | Bp Chemicals Snc | Procédé de préparation d'un support active de chlorure de magnésium pour catalyseurs de type Ziegler Natta. |
| FR2689510B1 (fr) * | 1992-04-03 | 1995-07-21 | Bp Chemicals Snc | Procede de preparation d'un catalyseur de type ziegler natta pour la polymerisation des olefines. |
| EP0564211A3 (fr) * | 1992-04-03 | 1993-10-20 | BP Chemicals Limited | Procédé de préparation d'un catalyseur Ziegler-Natta |
| FR2697526B1 (fr) * | 1992-10-30 | 1994-12-16 | Bp Chemicals Snc | Procédé de préparation d'un catalyseur de type Ziegler-Natta pour la polymérisation des oléfines. |
| US6436864B1 (en) | 1999-10-06 | 2002-08-20 | Sri International | Unsaturated nitrogenous compounds as electron donors for use with ziegler-natta catalysts |
| US6281306B1 (en) | 1999-12-16 | 2001-08-28 | Univation Technologies, Llc | Method of polymerization |
| JP4666426B2 (ja) * | 2000-09-29 | 2011-04-06 | 東邦チタニウム株式会社 | オレフィン類重合用固体触媒成分および触媒 |
| US6878659B2 (en) * | 2000-05-24 | 2005-04-12 | Toho Titanium Co., Ltd. | Solid catalyst component for olefin polymerization and catalyst |
| US6831032B2 (en) | 2002-08-19 | 2004-12-14 | Novolen Technology Holdings C.V. | Ziegler-Natta catalyst and methods of making and using same |
| EP1620479B1 (fr) | 2002-10-15 | 2013-07-24 | ExxonMobil Chemical Patents Inc. | Compositions à base d'adhesifs polyolefiniques et articles fabriques à partir de celles-ci |
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| WO2019217173A1 (fr) | 2018-05-02 | 2019-11-14 | Exxonmobil Chemical Patents Inc. | Procédés d'extrapolation d'une installation pilote à une installation de production plus grande |
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| WO2020014138A1 (fr) | 2018-07-09 | 2020-01-16 | Exxonmobil Chemical Patents Inc. | Films coulés de polyéthylène et procédés de fabrication de tels films coulés de polyéthylène |
| WO2020023207A1 (fr) | 2018-07-26 | 2020-01-30 | Exxonmobil Chemical Patents Inc. | Films de mousse multicouches et leurs procédés de fabrication |
| US20220025135A1 (en) | 2018-11-13 | 2022-01-27 | Exxonmobil Chemical Patents Inc. | Polyethylene Films |
| US11649331B2 (en) | 2018-11-13 | 2023-05-16 | Exxonmobil Chemical Patents Inc. | Polyethylene blends and films |
| WO2020163079A1 (fr) | 2019-02-06 | 2020-08-13 | Exxonmobil Chemical Patents Inc. | Films et enveloppes de couche pour articles d'hygiène |
| KR102602436B1 (ko) * | 2019-02-28 | 2023-11-14 | 현대자동차주식회사 | 금속 담지 촉매의 제조 방법 및 이로부터 제조된 금속 담지 촉매 |
| WO2021126458A1 (fr) | 2019-12-17 | 2021-06-24 | Exxonmobil Chemical Patents Inc. | Films constitués de mélanges de polyéthylène, destinés à améliorer les performances d'étanchéité et les propriétés mécaniques |
| US12152135B2 (en) | 2020-03-12 | 2024-11-26 | Exxonmobil Chemical Patents Inc. | Films made of polyethylene blends for improved bending stiffness and high MD tear resistance |
| US20230220136A1 (en) | 2020-07-22 | 2023-07-13 | Exxonmobil Chemical Patents Inc. | Polyolefin Compositions and Articles Thereof |
| EP4259669A1 (fr) | 2020-12-08 | 2023-10-18 | ExxonMobil Chemical Patents Inc. | Compositions de polyéthylène haute densité à ramification à longue chaîne |
| EP4330294A1 (fr) | 2021-04-30 | 2024-03-06 | ExxonMobil Chemical Patents Inc. | Procédés pour la transition entre différents catalyseurs de polymérisation dans un réacteur de polymérisation |
| WO2023081577A1 (fr) | 2021-11-02 | 2023-05-11 | Exxonmobil Chemical Patents Inc. | Compositions de polyéthylène, articles associés et procédés associés |
| WO2025250307A1 (fr) | 2024-05-30 | 2025-12-04 | ExxonMobil Technology and Engineering Company | Procédés d'amélioration de polymérisation en phase gazeuse |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB200514A (en) * | 1922-07-07 | 1924-04-24 | Efraim Larsson | Improvements in tariff indicators for taximeters |
| JPS5242157B2 (fr) * | 1972-12-29 | 1977-10-22 | ||
| IT1114822B (it) * | 1977-07-04 | 1986-01-27 | Montedison Spa | Componenti di catalizzatori per la polimerizzazione delle alfa-olefine |
| IT1098272B (it) * | 1978-08-22 | 1985-09-07 | Montedison Spa | Componenti,di catalizzatori e catalizzatori per la polimerizzazione delle alfa-olefine |
| JPS57205406A (en) * | 1981-06-11 | 1982-12-16 | Toyo Sutoufuaa Chem:Kk | Catalytic component for alpha-olefin polymerization and homopolymerization or copolymerization of alpha-olefin |
| US4384984A (en) * | 1981-09-30 | 1983-05-24 | Stauffer Chemical Company | Titanium catalyst for polymerizing olefins |
| JPS58215408A (ja) * | 1982-06-08 | 1983-12-14 | Mitsui Petrochem Ind Ltd | オレフインの重合方法 |
| FR2529206A1 (fr) * | 1982-06-24 | 1983-12-30 | Bp Chimie Sa | Procede de preparation de supports a base de chlorure de magnesium pour la preparation de catalyseurs de polymerisation des alpha-olefines et supports obtenus |
| FR2529209A1 (fr) * | 1982-06-24 | 1983-12-30 | Bp Chimie Sa | Catalyseurs pour la polymerisation et la copolymerisation du propylene et procedes de polymerisation utilisant ces catalyseurs |
| DE3366573D1 (en) * | 1982-06-24 | 1986-11-06 | Bp Chimie Sa | Process for the polymerization and copolymerization of alpha-olefins in a fluidized bed |
| JPS5947210A (ja) * | 1982-09-10 | 1984-03-16 | Mitsui Petrochem Ind Ltd | オレフイン共重合体の製造方法 |
| DK324084A (da) * | 1983-07-21 | 1985-01-22 | Stauffer Chemical Co | Olefinpolymerisationskatalysator og fremgangsmaade |
-
1988
- 1988-03-03 FR FR8802900A patent/FR2628110B1/fr not_active Expired - Fee Related
-
1989
- 1989-02-22 US US07/313,467 patent/US4960741A/en not_active Expired - Lifetime
- 1989-02-23 EP EP89301809A patent/EP0336545B1/fr not_active Expired - Lifetime
- 1989-02-23 DE DE68922335T patent/DE68922335T2/de not_active Expired - Fee Related
- 1989-02-23 AT AT89301809T patent/ATE121756T1/de not_active IP Right Cessation
- 1989-02-23 ES ES89301809T patent/ES2070904T3/es not_active Expired - Lifetime
- 1989-02-24 NO NO890786A patent/NO174626C/no not_active IP Right Cessation
- 1989-02-27 CA CA000592225A patent/CA1330338C/fr not_active Expired - Fee Related
- 1989-02-28 AU AU30832/89A patent/AU625873B2/en not_active Ceased
- 1989-03-02 DK DK100889A patent/DK100889A/da not_active Application Discontinuation
- 1989-03-02 JP JP1048707A patent/JP2810685B2/ja not_active Expired - Fee Related
- 1989-03-02 CN CN89101025A patent/CN1016609B/zh not_active Expired
- 1989-03-03 FI FI891028A patent/FI96612C/fi not_active IP Right Cessation
- 1989-03-03 KR KR1019890002597A patent/KR0142196B1/ko not_active Expired - Fee Related
- 1989-03-03 MY MYPI89000267A patent/MY103836A/en unknown
-
1991
- 1991-12-23 CS CS914012A patent/CS401291A3/cs unknown
-
1998
- 1998-06-17 HK HK98105550A patent/HK1006572A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0336545B1 (fr) | 1995-04-26 |
| DK100889D0 (da) | 1989-03-02 |
| CN1037157A (zh) | 1989-11-15 |
| FR2628110A1 (fr) | 1989-09-08 |
| US4960741A (en) | 1990-10-02 |
| EP0336545A1 (fr) | 1989-10-11 |
| DE68922335T2 (de) | 1995-08-31 |
| AU3083289A (en) | 1989-09-07 |
| KR890014585A (ko) | 1989-10-24 |
| CS401291A3 (en) | 1992-05-13 |
| FI96612C (fi) | 1996-07-25 |
| DE68922335D1 (de) | 1995-06-01 |
| MY103836A (en) | 1993-09-30 |
| CN1016609B (zh) | 1992-05-13 |
| AU625873B2 (en) | 1992-07-16 |
| FI96612B (fi) | 1996-04-15 |
| ATE121756T1 (de) | 1995-05-15 |
| ES2070904T3 (es) | 1995-06-16 |
| JP2810685B2 (ja) | 1998-10-15 |
| NO890786L (no) | 1989-09-04 |
| HK1006572A1 (en) | 1999-03-05 |
| NO174626C (no) | 1994-06-08 |
| KR0142196B1 (ko) | 1998-07-01 |
| FI891028L (fi) | 1989-09-04 |
| NO890786D0 (no) | 1989-02-24 |
| JPH01256502A (ja) | 1989-10-13 |
| NO174626B (no) | 1994-02-28 |
| DK100889A (da) | 1989-09-04 |
| FI891028A0 (fi) | 1989-03-03 |
| CA1330338C (fr) | 1994-06-21 |
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