TR199902988A2 - akiskan yatak vinil asetat katalizörü - Google Patents
akiskan yatak vinil asetat katalizörüInfo
- Publication number
- TR199902988A2 TR199902988A2 TR1999/02988A TR9902988A TR199902988A2 TR 199902988 A2 TR199902988 A2 TR 199902988A2 TR 1999/02988 A TR1999/02988 A TR 1999/02988A TR 9902988 A TR9902988 A TR 9902988A TR 199902988 A2 TR199902988 A2 TR 199902988A2
- Authority
- TR
- Turkey
- Prior art keywords
- vinyl acetate
- fluidized bed
- palladium
- support
- acetate catalyst
- Prior art date
Links
- 239000003054 catalyst Substances 0.000 title abstract 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 title abstract 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002736 metal compounds Chemical class 0.000 abstract 1
- 239000004005 microsphere Substances 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- 150000002941 palladium compounds Chemical class 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
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0205—Impregnation in several steps
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/58—Platinum group metals with alkali- or alkaline earth metals
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/63—Platinum group metals with rare earths or actinides
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/391—Physical properties of the active metal ingredient
- B01J35/393—Metal or metal oxide crystallite size
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/613—10-100 m2/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/633—Pore volume less than 0.5 ml/g
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/63—Pore volume
- B01J35/635—0.5-1.0 ml/g
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0027—Powdering
- B01J37/0045—Drying a slurry, e.g. spray drying
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
- C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Akiskan yatakli bir reaktörde vinil asetat üretimi için yararli bir katalizör malzemenin hazirlanmasi için bir yöntem olup asagidakileri içerir: (I) önceden olusturulmus gözenekli mikro-küremsi bir destegi, paladyum bilesegi çözeltileri ve en az bir afinite metal bilesigini, paladyum ile afinite metali mikro küremsi destek içinde iyice dagilacagi sekilde temas ettirmek; (II) paladyum bilesigini Pd(0) kristalitlerine indirgemek; (III) destege bir alkali metalin bir tesvikçi miktarini eklemek ve (IV) elde edilen katalizör malzemesini almak.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20785198A | 1998-12-08 | 1998-12-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
TR199902988A3 TR199902988A3 (tr) | 2000-07-21 |
TR199902988A2 true TR199902988A2 (tr) | 2000-07-21 |
Family
ID=22772244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TR1999/02988A TR199902988A2 (tr) | 1998-12-08 | 1999-12-08 | akiskan yatak vinil asetat katalizörü |
Country Status (15)
Country | Link |
---|---|
US (2) | US6358882B1 (tr) |
EP (1) | EP1008385A3 (tr) |
JP (1) | JP2000176285A (tr) |
KR (1) | KR100717093B1 (tr) |
CN (1) | CN1178748C (tr) |
BR (1) | BR9907490A (tr) |
ID (1) | ID24003A (tr) |
MY (1) | MY129802A (tr) |
NO (2) | NO325524B1 (tr) |
RS (1) | RS50014B (tr) |
RU (1) | RU2237517C2 (tr) |
SG (1) | SG86363A1 (tr) |
TR (1) | TR199902988A2 (tr) |
TW (1) | TW476668B (tr) |
UA (1) | UA65569C2 (tr) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19914066A1 (de) * | 1999-03-27 | 2000-10-05 | Celanese Chem Europe Gmbh | Katalysatoren für die Gasphasenoxidation von Ethylen und Essigsäure zu Vinylacetat, Verfahren zu ihrer Herstellung und ihre Verwendung |
DE19959064A1 (de) * | 1999-12-08 | 2001-06-13 | Basf Ag | Trägerkatalysator zur Selektivhydrierung von Alkinen und Dienen |
GB0014583D0 (en) | 2000-06-14 | 2000-08-09 | Bp Chem Int Ltd | Process |
EP1190768A1 (de) * | 2000-09-26 | 2002-03-27 | Degussa AG | Edelmetallkatalysator |
GB0026241D0 (en) * | 2000-10-26 | 2000-12-13 | Bp Chem Int Ltd | Process |
US8572910B2 (en) * | 2003-05-09 | 2013-11-05 | Tapco International, Inc. | Cap-on-cap mounting block |
GB0312769D0 (en) * | 2003-06-04 | 2003-07-09 | Johnson Matthey Plc | Process for selective hydrogenation of acetylenic compounds and catalyst therefor |
WO2005005033A2 (en) * | 2003-06-30 | 2005-01-20 | New Jersey Institute Of Technology | Catalysts and methods for making same |
WO2005065821A1 (en) * | 2003-12-19 | 2005-07-21 | Celanese International Corporation | Layered support material for catalysts |
TW201236754A (en) * | 2003-12-19 | 2012-09-16 | Celanese Int Corp | Zirconia containing support materials for catalysts |
NZ547072A (en) | 2003-12-19 | 2010-05-28 | Celanese Int Corp | Zirconia containing support material for palladium / gold catalysts |
JP4551109B2 (ja) * | 2004-04-14 | 2010-09-22 | エヌ・イーケムキャット株式会社 | 触媒の製造方法 |
US20050234136A1 (en) | 2004-04-19 | 2005-10-20 | Holland Brian T | Colloidal compositions and methods of preparing same |
DE102004050585A1 (de) * | 2004-10-15 | 2006-04-20 | Degussa Ag | Mikroreaktor und Verfahren zur Synthese von Vinylacetat-Monomer (VAM) in der Gasphase |
BRPI0518825A2 (pt) * | 2004-12-20 | 2008-12-09 | Celanese Int Corp | materias de suporte modificados para catalisadores |
US8227369B2 (en) * | 2005-05-25 | 2012-07-24 | Celanese International Corp. | Layered composition and processes for preparing and using the composition |
TW200704436A (en) * | 2005-06-24 | 2007-02-01 | Bp Chem Int Ltd | Vinyl acetate catalyst and support |
US20080108497A1 (en) * | 2006-11-08 | 2008-05-08 | Holland Brian T | Metal-rich siliceous compositions and methods of producing same |
DE102006062331A1 (de) * | 2006-12-22 | 2008-06-26 | Uhde Gmbh | Herstellung von Vinylchlorid |
US7811968B2 (en) * | 2007-05-11 | 2010-10-12 | Lyondell Chemical Technology, L.P. | Preparation of palladium-gold catalysts |
DE102007025443A1 (de) * | 2007-05-31 | 2008-12-04 | Süd-Chemie AG | Pd/Au-Schalenkatalysator enthaltend HfO2, Verfahren zu dessen Herstellung sowie dessen Verwendung |
DE102007025444A1 (de) * | 2007-05-31 | 2008-12-11 | Süd-Chemie AG | VAM-Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung |
DE102007025315A1 (de) * | 2007-05-31 | 2008-12-11 | Süd-Chemie AG | Katalysator zur selektiven Hydrierung acetylenischer Kohlenwasserstoffe und Verfahren zu seiner Herstellung |
DE102007025223A1 (de) * | 2007-05-31 | 2008-12-04 | Süd-Chemie AG | Zirkoniumoxid-dotierter VAM-Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung |
DE102007025442B4 (de) * | 2007-05-31 | 2023-03-02 | Clariant International Ltd. | Verwendung einer Vorrichtung zur Herstellung eines Schalenkatalysators und Schalenkatalysator |
DE102007025362A1 (de) * | 2007-05-31 | 2008-12-11 | Süd-Chemie AG | Dotierter Pd/Au-Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung |
US8790608B2 (en) * | 2008-09-12 | 2014-07-29 | Nalco Company | Siliceous materials having tunable porosity and surface morphology and methods of synthesizing same |
DE202008017277U1 (de) | 2008-11-30 | 2009-04-30 | Süd-Chemie AG | Katalysatorträger |
US8329611B2 (en) | 2009-12-16 | 2012-12-11 | Lyondell Chemical Technology, L,P. | Titania-containing extrudate |
US8507720B2 (en) * | 2010-01-29 | 2013-08-13 | Lyondell Chemical Technology, L.P. | Titania-alumina supported palladium catalyst |
US8273682B2 (en) * | 2009-12-16 | 2012-09-25 | Lyondell Chemical Technology, L.P. | Preparation of palladium-gold catalyst |
JPWO2022201533A1 (tr) * | 2021-03-26 | 2022-09-29 |
Family Cites Families (27)
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GB123632A (en) | 1918-03-27 | 1919-03-06 | George Herman Collier | Improvements in or connected with Vacuum Flasks. |
GB1283737A (en) | 1968-09-04 | 1972-08-02 | Nat Distillers Chem Corp | Method of catalyst preparation |
NL6915303A (tr) * | 1968-10-22 | 1970-04-24 | ||
GB1333449A (en) | 1970-11-20 | 1973-10-10 | Hoechst Ag | Process for the oxacylation of olefins in the gaseous phase |
US3918543A (en) * | 1973-12-26 | 1975-11-11 | Norman Halem | System for employing the change of momentum during vehicle deceleration for accessory power |
JPS514118A (en) | 1974-06-27 | 1976-01-14 | Kuraray Co | Sakusanbiniruno seizohoho |
JPS5917098B2 (ja) | 1979-01-17 | 1984-04-19 | ジェイエスアール株式会社 | 共役ジエンモノエステルの製造方法 |
US4649037A (en) | 1985-03-29 | 1987-03-10 | Allied Corporation | Spray-dried inorganic oxides from non-aqueous gels or solutions |
JPS6279841A (ja) | 1985-10-02 | 1987-04-13 | Teikoku Kako Kk | 無機球状体の製造方法 |
JPH07121358B2 (ja) | 1987-12-02 | 1995-12-25 | 三菱化学株式会社 | アルミナをベースとする流動触媒の製造法 |
TW330160B (en) * | 1992-04-08 | 1998-04-21 | Hoechst Ag | Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate |
GB9210265D0 (en) * | 1992-05-13 | 1992-07-01 | Unilever Plc | Catalysts and catalyst supports |
DE4323978C1 (de) * | 1993-07-16 | 1995-02-16 | Hoechst Ag | Palladium und Kalium sowie Cadmium, Barium oder Gold enthaltender Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Vinylacetat |
DE4323980C1 (de) * | 1993-07-16 | 1995-03-30 | Hoechst Ag | Palladium und Kalium sowie Cadmium, Barium oder Gold enthaltender Schalenkatalysator, Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Vinylacetat |
US5466652A (en) | 1994-02-22 | 1995-11-14 | The Standard Oil Co. | Process for the preparation of vinyl acetate catalyst |
ES2249764T3 (es) * | 1994-02-22 | 2006-04-01 | The Standard Oil Company | Proceso de preparacion de un catalizador para fabricar acetato de vinilo en un lecho fluido. |
US5550281A (en) | 1994-06-02 | 1996-08-27 | Cirjak; Larry M. | Fluid bed process for the acetoxylation of ethylene in the production of vinyl acetate |
US5665667A (en) * | 1994-06-02 | 1997-09-09 | The Standard Oil Company | Process for the preparation of vinyl acetate catalyst |
ES2135006T3 (es) | 1994-06-02 | 1999-10-16 | Standard Oil Co Ohio | Procedimiento en lecho fluido para la acetoxilacion de etileno en la produccion de acetato de vinilo. |
US5536693A (en) * | 1994-06-02 | 1996-07-16 | The Standard Oil Company | Process for the preparation of vinyl acetate catalyst |
DE19501891C1 (de) | 1995-01-23 | 1996-09-26 | Degussa | Verfahren zur Herstellung eines Trägerkatalysators und seine Verwendung für die Produktion von Vinylacetat |
DE19523271A1 (de) * | 1995-06-27 | 1997-01-02 | Hoechst Ag | Katalysator und Verfahren zur Herstellung von Vinylacetat |
US5691267A (en) * | 1996-04-16 | 1997-11-25 | Hoechst Celanese Corporation | Two step gold addition method for preparing a vinyl acetate catalyst |
GB9622911D0 (en) | 1996-11-04 | 1997-01-08 | Bp Chem Int Ltd | Process |
US5859287A (en) | 1997-10-30 | 1999-01-12 | Celanese International Corporation | Process for preparing vinyl acetate utilizing a catalyst comprising palladium, gold, and any of certain third metals |
DE19755022C2 (de) | 1997-12-11 | 2000-03-09 | Celanese Chem Europe Gmbh | Katalysator und Verfahren zur Herstellung von Vinylacetat |
DE19755023C2 (de) | 1997-12-11 | 2000-03-09 | Celanese Chem Europe Gmbh | Katalysator und Verfahren zur Herstellung von Vinylacetat |
-
1999
- 1999-11-15 US US09/455,753 patent/US6358882B1/en not_active Expired - Fee Related
- 1999-11-19 EP EP99309222A patent/EP1008385A3/en not_active Ceased
- 1999-12-03 TW TW088121205A patent/TW476668B/zh not_active IP Right Cessation
- 1999-12-07 MY MYPI99005314A patent/MY129802A/en unknown
- 1999-12-07 BR BR9907490-7A patent/BR9907490A/pt active Search and Examination
- 1999-12-07 NO NO19996008A patent/NO325524B1/no unknown
- 1999-12-07 JP JP11348221A patent/JP2000176285A/ja not_active Withdrawn
- 1999-12-07 RU RU99125834A patent/RU2237517C2/ru not_active IP Right Cessation
- 1999-12-07 SG SG9906114A patent/SG86363A1/en unknown
- 1999-12-07 KR KR1019990055464A patent/KR100717093B1/ko not_active IP Right Cessation
- 1999-12-07 ID IDP991123D patent/ID24003A/id unknown
- 1999-12-08 RS YUP-638/99A patent/RS50014B/sr unknown
- 1999-12-08 CN CNB991278755A patent/CN1178748C/zh not_active Expired - Fee Related
- 1999-12-08 TR TR1999/02988A patent/TR199902988A2/tr unknown
- 1999-12-08 UA UA99126688A patent/UA65569C2/uk unknown
-
2001
- 2001-12-04 US US10/004,780 patent/US6534672B2/en not_active Expired - Fee Related
-
2005
- 2005-06-17 NO NO20052980A patent/NO324572B1/no unknown
Also Published As
Publication number | Publication date |
---|---|
NO324572B1 (no) | 2007-11-26 |
US6534672B2 (en) | 2003-03-18 |
NO996008L (no) | 2000-06-09 |
CN1178748C (zh) | 2004-12-08 |
RU2237517C2 (ru) | 2004-10-10 |
NO20052980D0 (no) | 2005-06-17 |
ID24003A (id) | 2000-06-14 |
JP2000176285A (ja) | 2000-06-27 |
KR20000047965A (ko) | 2000-07-25 |
SG86363A1 (en) | 2002-02-19 |
RS50014B (sr) | 2008-09-29 |
YU63899A (sh) | 2001-09-28 |
TW476668B (en) | 2002-02-21 |
EP1008385A2 (en) | 2000-06-14 |
UA65569C2 (en) | 2004-04-15 |
US20020062039A1 (en) | 2002-05-23 |
KR100717093B1 (ko) | 2007-05-10 |
EP1008385A3 (en) | 2001-03-28 |
BR9907490A (pt) | 2001-01-16 |
NO20052980L (no) | 2000-06-09 |
CN1264621A (zh) | 2000-08-30 |
NO996008D0 (no) | 1999-12-07 |
TR199902988A3 (tr) | 2000-07-21 |
NO325524B1 (no) | 2008-06-02 |
US6358882B1 (en) | 2002-03-19 |
MY129802A (en) | 2007-04-30 |
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