DE69432779T2 - Olefinpolymerisationskatalysator und Verfahren zur Herstellung von Polypropylen und Propylen-Blockcopolymeren - Google Patents
Olefinpolymerisationskatalysator und Verfahren zur Herstellung von Polypropylen und Propylen-Blockcopolymeren Download PDFInfo
- Publication number
- DE69432779T2 DE69432779T2 DE69432779T DE69432779T DE69432779T2 DE 69432779 T2 DE69432779 T2 DE 69432779T2 DE 69432779 T DE69432779 T DE 69432779T DE 69432779 T DE69432779 T DE 69432779T DE 69432779 T2 DE69432779 T2 DE 69432779T2
- Authority
- DE
- Germany
- Prior art keywords
- propylene
- compound
- component
- absorption intensity
- represented
- 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
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
- C08F297/00—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
- C08F297/06—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type
- C08F297/08—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins
- C08F297/083—Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer using a catalyst of the coordination type polymerising mono-olefins the monomers being ethylene or propylene
-
- 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
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/06—Propene
-
- 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/04—Monomers containing three or four carbon atoms
- C08F210/06—Propene
-
- 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
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
-
- 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
- Y10S526/904—Monomer polymerized in presence of transition metal containing catalyst at least part of which is supported on a polymer, e.g. prepolymerized catalysts
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20138993 | 1993-08-13 | ||
JP20138993 | 1993-08-13 | ||
JP20138893 | 1993-08-13 | ||
JP20138893 | 1993-08-13 | ||
JP20430993 | 1993-08-18 | ||
JP20431093 | 1993-08-18 | ||
JP20430993 | 1993-08-18 | ||
JP20431093 | 1993-08-18 | ||
JP20431193 | 1993-08-18 | ||
JP20431193 | 1993-08-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69432779D1 DE69432779D1 (de) | 2003-07-10 |
DE69432779T2 true DE69432779T2 (de) | 2004-05-13 |
Family
ID=27529285
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69429198T Expired - Lifetime DE69429198T2 (de) | 1993-08-13 | 1994-08-12 | Olefinpolymerisationskatalysator und Verfahren zur Herstellung von Polypropylen und Propylen-Blockcopolymeren |
DE69432779T Expired - Lifetime DE69432779T2 (de) | 1993-08-13 | 1994-08-12 | Olefinpolymerisationskatalysator und Verfahren zur Herstellung von Polypropylen und Propylen-Blockcopolymeren |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69429198T Expired - Lifetime DE69429198T2 (de) | 1993-08-13 | 1994-08-12 | Olefinpolymerisationskatalysator und Verfahren zur Herstellung von Polypropylen und Propylen-Blockcopolymeren |
Country Status (7)
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
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TW354792B (en) | 1993-08-13 | 1999-03-21 | Mitsui Petrochemical Ind | Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer |
CA2162946C (en) * | 1994-11-21 | 2004-01-06 | Kazuyuki Watanabe | Propylene block copolymer and process for producing the same |
IT1275867B1 (it) * | 1995-03-07 | 1997-10-24 | Enichem Elastomers | Procedimento per l'ottenimento di copolimeri elastomerici etilene- propilene ad alta purezza e distribuzione dei pesi molecolari |
DE19545499A1 (de) * | 1995-12-06 | 1997-06-12 | Basf Ag | Verbesserte statistische Propylencopolymerisate |
IT1282691B1 (it) * | 1996-02-27 | 1998-03-31 | Montell North America Inc | Processo per la preparazione di copolimeri random del propilene e prodotti cosi' ottenuti |
US5859143A (en) * | 1996-04-18 | 1999-01-12 | Mitsubishi Chemical Corporation | Process for continuously producing propylene-based block copolymer |
KR100289227B1 (ko) * | 1996-05-27 | 2001-05-02 | 나까니시 히로유끼 | 결정성 폴리프로필렌, 그 제조방법, 폴리프로필렌 조성물, 및 열성형체 |
US6403708B2 (en) | 1996-05-27 | 2002-06-11 | Mitsui Chemicals Inc | Crystalline polypropylenes, process for preparing thereof, polypropylene compositions, and thermoformed products |
JP3358441B2 (ja) * | 1996-06-04 | 2002-12-16 | 住友化学工業株式会社 | ポリプロピレンブロック共重合体 |
JP3688078B2 (ja) * | 1996-11-20 | 2005-08-24 | 三井化学株式会社 | オレフィン重合用触媒、予備重合触媒、オレフィンの重合方法 |
KR100444618B1 (ko) * | 1997-05-30 | 2004-08-18 | 미쓰이 가가쿠 가부시키가이샤 | 폴리프로필렌 수지조성물 및 사출성형품 |
JPH1112316A (ja) * | 1997-06-26 | 1999-01-19 | Toho Titanium Co Ltd | オレフィン類重合用固体触媒成分及び触媒 |
CN1146585C (zh) | 1998-11-04 | 2004-04-21 | 蒙特尔技术有限公司 | 用于烯烃聚合的催化剂组分和催化剂 |
SG80673A1 (en) * | 1999-02-25 | 2001-05-22 | Sumitomo Chemical Co | Catalyst component, catalyst for olefin polymerization, process for producing olefin polymer and use of organosilicon compound |
KR100524293B1 (ko) | 1999-05-27 | 2005-10-26 | 삼성토탈 주식회사 | 에틸렌 중합 및 공중합용 촉매 |
KR100546499B1 (ko) * | 1999-05-27 | 2006-01-26 | 삼성토탈 주식회사 | 에틸렌 중합 및 공중합용 촉매 |
ATE291041T1 (de) * | 1999-10-02 | 2005-04-15 | Borealis Tech Oy | Geträgerter und modifizierter katalysator für die polymerisation von olefine |
US6384142B1 (en) | 2000-02-08 | 2002-05-07 | Exxonmobil Chemical Patents Inc. | Propylene impact copolymers |
ES2215879T3 (es) | 2000-02-08 | 2004-10-16 | Exxonmobil Chemical Patents Inc. | Metodo de preparacion de ligandos de bisciclo-pentadienilo del grupo 14 con puente. |
KR100468012B1 (ko) * | 2000-04-24 | 2005-01-24 | 도호 티타늄 가부시키가이샤 | 올레핀류 중합용 고체 촉매성분 및 촉매 |
JP5122054B2 (ja) * | 2000-05-12 | 2013-01-16 | バセル テクノロジー カンパニー ビー.ブイ. | オレフィン重合用の予備重合触媒成分 |
KR100387734B1 (ko) * | 2000-06-17 | 2003-06-18 | 삼성종합화학주식회사 | 올레핀 중합용 촉매 및 중합방법 |
WO2002046249A2 (en) * | 2000-11-07 | 2002-06-13 | Symyx Technologies, Inc. | Methods of copolymerizing ethylene and isobutylene and polymers made thereby |
KR100389477B1 (ko) * | 2000-11-09 | 2003-06-27 | 삼성종합화학주식회사 | 에틸렌 중합체 및 공중합체 제조방법 |
KR100389475B1 (ko) * | 2000-11-09 | 2003-06-27 | 삼성종합화학주식회사 | 에틸렌 중합 또는 공중합용 촉매의 제조 방법 |
KR100389476B1 (ko) * | 2000-11-09 | 2003-06-27 | 삼성종합화학주식회사 | 에틸렌 중합체 및 공중합체 제조방법 |
KR100389962B1 (ko) * | 2000-11-10 | 2003-07-02 | 삼성종합화학주식회사 | 에틸렌 중합 또는 공중합용 촉매의 제조 방법 |
KR100421551B1 (ko) * | 2000-12-16 | 2004-03-09 | 삼성아토피나주식회사 | 올레핀 전중합 촉매 및 이를 이용한 올레핀 중합방법 |
EP1362131A4 (en) * | 2000-12-22 | 2005-03-02 | Samsung General Chemicals Co | POLYPROPYL FLAME RETARDANT COMPOSITION |
EP1358223A4 (en) * | 2000-12-22 | 2005-01-05 | Samsung General Chemicals Co | CHELATE CATALYST FOR OLEFIN POLYMERIZATION AND OLEFIN POLYMERIZATION METHOD USED |
KR100431637B1 (ko) * | 2000-12-22 | 2004-05-17 | 삼성아토피나주식회사 | 올레핀 중합방법 및 고용융장력의 수지조성물 |
KR100530794B1 (ko) | 2001-06-21 | 2005-11-23 | 삼성토탈 주식회사 | 에틸렌 중합 및 공중합용 촉매 |
US7091292B2 (en) * | 2002-04-24 | 2006-08-15 | Symyx Technologies, Inc. | Bridged bi-aromatic catalysts, complexes, and methods of using the same |
AU2003225156A1 (en) * | 2002-04-24 | 2003-11-10 | Symyx Technologies, Inc. | Bridged bi-aromatic ligands, complexes, catalysts and processes for polymerizing and poymers therefrom |
US7060848B2 (en) * | 2002-04-24 | 2006-06-13 | Symyx Technologies, Inc. | Bridged bi-aromatic catalysts, complexes, and methods of using the same |
WO2003095504A1 (fr) * | 2002-05-10 | 2003-11-20 | Idemitsu Kosan Co., Ltd. | Compose catalyseur solide pour polymerisation d'olefines, catalyseurs pour polymerisation d'olefines et procede de production de polymeres d'olefines |
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US7977435B2 (en) | 2006-07-12 | 2011-07-12 | Lin Chon-Yie | Propylene polymer compositions and processes for making the same |
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CN103467630B (zh) | 2007-08-24 | 2016-08-10 | 格雷斯公司 | 具有受控的铝和选择性控制剂之比的自限制催化剂体系和方法 |
US20090096130A1 (en) * | 2007-09-28 | 2009-04-16 | Advanced Composites, Inc. | Thermoplastic polyolefin material with high surface gloss |
CN102015879B (zh) | 2008-04-24 | 2013-11-20 | 博里利斯股份公司 | 高纯度多相丙烯共聚物 |
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MX2011001970A (es) * | 2008-08-21 | 2011-08-12 | Dow Global Technologies Llc | Composicion de catalizador con agente de control de selectividad mezclado y metodo de polimerizacion que la usa. |
PL2315790T3 (pl) | 2008-08-21 | 2018-08-31 | W.R. Grace & Co. - Conn. | Kopolimer udarowy propylenu o wysokiej szybkości przepływu i metoda |
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US20100267882A1 (en) * | 2009-04-15 | 2010-10-21 | Advanced Composites, Inc. | Polyolefin Compositions |
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ES2843557T3 (es) | 2014-01-20 | 2021-07-19 | Toho Titanium Co Ltd | Componente de catalizador sólido para uso en la polimerización de olefinas, método para producir el mismo, catalizador para uso en la polimerización de olefinas y método para producir polímeros de olefinas |
US10647795B2 (en) | 2014-02-07 | 2020-05-12 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins |
US10696765B2 (en) | 2014-02-07 | 2020-06-30 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and propylene polymer |
US10308740B2 (en) | 2014-02-07 | 2019-06-04 | Eastman Chemical Company | Amorphous propylene-ethylene copolymers |
US9611341B2 (en) | 2014-02-07 | 2017-04-04 | Eastman Chemical Company | Amorphous propylene-ethylene copolymers |
US11267916B2 (en) | 2014-02-07 | 2022-03-08 | Eastman Chemical Company | Adhesive composition comprising amorphous propylene-ethylene copolymer and polyolefins |
US10723824B2 (en) | 2014-02-07 | 2020-07-28 | Eastman Chemical Company | Adhesives comprising amorphous propylene-ethylene copolymers |
CN105884971B (zh) * | 2014-09-05 | 2019-03-15 | 中国石油化工股份有限公司 | 一种链烯烃-环烯烃共聚物 |
US11427660B2 (en) | 2016-08-17 | 2022-08-30 | Formosa Plastics Corporation, Usa | Organosilicon compounds as electron donors for olefin polymerization catalysts and methods of making and using same |
WO2020064568A1 (en) * | 2018-09-28 | 2020-04-02 | Borealis Ag | Process for producing a prepolymerized solid ziegler-natta catalyst |
SG11202112486PA (en) | 2019-05-10 | 2021-12-30 | Grace W R & Co | Activated catalyst components for olefin polymerization |
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US4522982A (en) * | 1983-06-06 | 1985-06-11 | Exxon Research & Engineering Co. | Isotactic-stereoblock polymers of alpha-olefins and process for producing the same |
CA1235543A (en) * | 1984-09-12 | 1988-04-19 | Norio Kashiwa | Process for producing propylene block copolymer |
CA1310955C (en) * | 1987-03-13 | 1992-12-01 | Mamoru Kioka | Process for polymerization of olefins and polymerization catalyst |
ES2052004T5 (es) * | 1988-06-17 | 2002-05-16 | Mitsui Chemicals Inc | Procedimiento de preparacion de poliolefinas y catalizador de polimerizacion. |
CA1334841C (en) * | 1988-09-13 | 1995-03-21 | Mamoru Kioka | Olefin polymerization catalyst component, process for production thereof, olefin polymerization catalysts, and process for polymerizing olefins |
IT1227258B (it) * | 1988-09-30 | 1991-03-28 | Himont Inc | Componenti e catalizzatori per la polimerizzazione di olefine |
IT1227259B (it) * | 1988-09-30 | 1991-03-28 | Himont Inc | Catalizzatori per la polimerizzazione di olefine. |
IT1241093B (it) * | 1990-03-30 | 1993-12-29 | Himont Inc | Componenti e catalizzatori per la polimerizzazione di olefine |
CA2040336C (en) * | 1990-04-13 | 1998-01-20 | Mamoru Kioka | Solid titanium catalyst component for olefin polymerization, olefin polymerization catalyst, prepolymerized polyolefin-containing catalyst and method of olefin polymerization |
US5726262A (en) * | 1990-04-13 | 1998-03-10 | Mitsui Petrochemical Industries, Ltd. | Solid titanium catalyst component for olefin polymerization, olefin polymerization catalyst, prepolymerized polyolefin-containing catalyst and method of olefin polymerization |
DE4114833A1 (de) * | 1990-05-16 | 1991-11-28 | Basf Ag | Ziegler-natta-katalysatorsysteme mit siliciumorganischen verbindungen |
IT1245250B (it) * | 1991-03-27 | 1994-09-13 | Himont Inc | Componenti e catalizzatori per la polimerizzazione di olefine |
IT1262933B (it) * | 1992-01-31 | 1996-07-22 | Montecatini Tecnologie Srl | Processo per la polimerizzazione in fase gas di alfa-olefine |
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JP3280477B2 (ja) * | 1992-08-31 | 2002-05-13 | 三井化学株式会社 | オレフィン重合用固体状チタン触媒成分の調製方法 |
TW354792B (en) | 1993-08-13 | 1999-03-21 | Mitsui Petrochemical Ind | Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer |
-
1994
- 1994-08-11 TW TW083107329A patent/TW354792B/zh active
- 1994-08-12 CA CA002130009A patent/CA2130009C/en not_active Expired - Fee Related
- 1994-08-12 EP EP94112641A patent/EP0641807B1/en not_active Expired - Lifetime
- 1994-08-12 EP EP98105188A patent/EP0854156B1/en not_active Expired - Lifetime
- 1994-08-12 DE DE69429198T patent/DE69429198T2/de not_active Expired - Lifetime
- 1994-08-12 DE DE69432779T patent/DE69432779T2/de not_active Expired - Lifetime
- 1994-08-13 KR KR1019940020038A patent/KR0182339B1/ko not_active IP Right Cessation
- 1994-08-13 CN CN94109542A patent/CN1049898C/zh not_active Expired - Lifetime
- 1994-08-13 CN CNB991049896A patent/CN1169846C/zh not_active Expired - Lifetime
-
1996
- 1996-07-31 US US08/690,054 patent/US5618886A/en not_active Expired - Lifetime
- 1996-10-16 US US08/730,930 patent/US6271166B1/en not_active Expired - Lifetime
-
1998
- 1998-05-15 KR KR1019980017449A patent/KR0163665B1/ko not_active IP Right Cessation
- 1998-06-03 US US09/089,116 patent/US6214939B1/en not_active Expired - Lifetime
-
1999
- 1999-04-09 CN CN99104987A patent/CN1125831C/zh not_active Expired - Lifetime
- 1999-04-09 CN CN99104993A patent/CN1132866C/zh not_active Expired - Lifetime
- 1999-04-09 CN CN99104988A patent/CN1112379C/zh not_active Expired - Lifetime
- 1999-04-09 CN CN99104872A patent/CN1112375C/zh not_active Expired - Lifetime
- 1999-04-15 CN CN99105216A patent/CN1112376C/zh not_active Expired - Lifetime
-
2001
- 2001-06-12 US US09/878,426 patent/US6537942B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0641807A2 (en) | 1995-03-08 |
US6537942B2 (en) | 2003-03-25 |
EP0854156A3 (en) | 1998-08-12 |
US5618886A (en) | 1997-04-08 |
CN1111643A (zh) | 1995-11-15 |
CN1112375C (zh) | 2003-06-25 |
CN1231295A (zh) | 1999-10-13 |
CN1169846C (zh) | 2004-10-06 |
CN1132866C (zh) | 2003-12-31 |
CN1049898C (zh) | 2000-03-01 |
US6214939B1 (en) | 2001-04-10 |
CN1125831C (zh) | 2003-10-29 |
CN1231294A (zh) | 1999-10-13 |
CN1239105A (zh) | 1999-12-22 |
DE69432779D1 (de) | 2003-07-10 |
EP0641807B1 (en) | 2003-06-04 |
CN1245813A (zh) | 2000-03-01 |
CN1112376C (zh) | 2003-06-25 |
US6271166B1 (en) | 2001-08-07 |
KR0182339B1 (ko) | 1999-05-15 |
EP0854156A2 (en) | 1998-07-22 |
KR0163665B1 (en) | 1999-01-15 |
EP0854156B1 (en) | 2001-11-21 |
DE69429198T2 (de) | 2002-08-14 |
CN1112379C (zh) | 2003-06-25 |
CN1231293A (zh) | 1999-10-13 |
CN1232829A (zh) | 1999-10-27 |
CA2130009A1 (en) | 1995-02-14 |
KR950005850A (ko) | 1995-03-20 |
DE69429198D1 (de) | 2002-01-03 |
US20010044375A1 (en) | 2001-11-22 |
EP0641807A3 (en) | 1995-04-26 |
CA2130009C (en) | 1998-09-22 |
TW354792B (en) | 1999-03-21 |
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