AU728337B2 - High-molecular-weight ethylene-propylene reactor blend with a broad molecular weight distribution - Google Patents
High-molecular-weight ethylene-propylene reactor blend with a broad molecular weight distribution Download PDFInfo
- Publication number
- AU728337B2 AU728337B2 AU23515/97A AU2351597A AU728337B2 AU 728337 B2 AU728337 B2 AU 728337B2 AU 23515/97 A AU23515/97 A AU 23515/97A AU 2351597 A AU2351597 A AU 2351597A AU 728337 B2 AU728337 B2 AU 728337B2
- Authority
- AU
- Australia
- Prior art keywords
- weight
- propylene
- ethylene
- range
- component
- 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.)
- Ceased
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 17
- 238000009826 distribution Methods 0.000 title claims abstract description 13
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 title description 3
- 239000004743 Polypropylene Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 25
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000005977 Ethylene Substances 0.000 claims abstract description 21
- -1 polypropylene Polymers 0.000 claims abstract description 10
- 229920001577 copolymer Polymers 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 229920001155 polypropylene Polymers 0.000 claims abstract description 9
- 239000000155 melt Substances 0.000 claims abstract description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 42
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 17
- 229920000642 polymer Polymers 0.000 claims description 14
- 239000012071 phase Substances 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 11
- 239000000178 monomer Substances 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- SJJCABYOVIHNPZ-UHFFFAOYSA-N cyclohexyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C1CCCCC1 SJJCABYOVIHNPZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- 238000007334 copolymerization reaction Methods 0.000 claims description 4
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 claims description 3
- MCULRUJILOGHCJ-UHFFFAOYSA-N triisobutylaluminium Chemical compound CC(C)C[Al](CC(C)C)CC(C)C MCULRUJILOGHCJ-UHFFFAOYSA-N 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 150000003961 organosilicon compounds Chemical class 0.000 claims description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 claims description 2
- 101100366935 Caenorhabditis elegans sto-2 gene Proteins 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 description 18
- 239000001257 hydrogen Substances 0.000 description 18
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 17
- 238000012360 testing method Methods 0.000 description 13
- 239000008187 granular material Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- JWCYDYZLEAQGJJ-UHFFFAOYSA-N dicyclopentyl(dimethoxy)silane Chemical compound C1CCCC1[Si](OC)(OC)C1CCCC1 JWCYDYZLEAQGJJ-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006583 body weight regulation Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012685 gas phase polymerization Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229920005653 propylene-ethylene copolymer Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 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
- C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
- C08L23/142—Copolymers of propene at least partially crystalline copolymers of propene with other olefins
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2308/00—Chemical blending or stepwise polymerisation process with the same catalyst
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Polymerisation Methods In General (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Graft Or Block Polymers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19621022 | 1996-05-24 | ||
| DE19621022.4A DE19621022B4 (de) | 1996-05-24 | 1996-05-24 | Hochmolekulares Ethylen/Propylen-Reaktorblend mit breiter Molmassenverteilung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2351597A AU2351597A (en) | 1997-11-27 |
| AU728337B2 true AU728337B2 (en) | 2001-01-04 |
Family
ID=7795265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU23515/97A Ceased AU728337B2 (en) | 1996-05-24 | 1997-05-20 | High-molecular-weight ethylene-propylene reactor blend with a broad molecular weight distribution |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US5962595A (enExample) |
| EP (1) | EP0808870B2 (enExample) |
| JP (1) | JP4174085B2 (enExample) |
| AT (1) | ATE221098T1 (enExample) |
| AU (1) | AU728337B2 (enExample) |
| BR (2) | BR9703390A (enExample) |
| CA (1) | CA2205887C (enExample) |
| CZ (1) | CZ291103B6 (enExample) |
| DE (2) | DE19621022B4 (enExample) |
| ES (1) | ES2183041T3 (enExample) |
| HU (1) | HU225023B1 (enExample) |
| IL (1) | IL120896A (enExample) |
| NO (1) | NO972371L (enExample) |
| PL (1) | PL188615B1 (enExample) |
| SK (1) | SK65597A3 (enExample) |
| TR (1) | TR199700413A2 (enExample) |
| TW (1) | TW474948B (enExample) |
| ZA (1) | ZA974516B (enExample) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2282906B (en) | 1993-10-13 | 1996-11-06 | Dataquill Ltd | Data enty systems |
| FI944761A0 (fi) * | 1994-10-11 | 1994-10-11 | Borealis Holding As | Ny polypropylenkomposition med vid molekylvikt distribution |
| DE19813399A1 (de) | 1998-03-26 | 1999-09-30 | Basf Ag | Statistische Propylencopolymerisate |
| JP2001072815A (ja) | 1999-09-07 | 2001-03-21 | Chisso Corp | プロピレン系樹脂組成物 |
| DE19957384A1 (de) | 1999-11-29 | 2001-05-31 | Targor Gmbh | Hochmolekulares Polypropylen mit breiter Molekulargewichtsverteilung und geringer isotaktischer Sequenzlänge |
| JP2002018887A (ja) | 2000-07-12 | 2002-01-22 | Chisso Corp | ポリプロピレン樹脂発泡成形体 |
| DE10261107A1 (de) * | 2002-12-20 | 2004-07-01 | Basell Polyolefine Gmbh | Formmassen aus einem hochmolekularen Propylenpolymerisat |
| PL376996A1 (pl) * | 2002-12-20 | 2006-01-23 | Basell Polyolefine Gmbh | Mieszanki do formowania wytworzone z wielkocząsteczkowego polimeru propylenowego |
| US20070276095A1 (en) * | 2003-09-11 | 2007-11-29 | Basell Polyolefine Gmbh | Multistep Process for Preparing Heterophasic Propylene Copolymers |
| JP2007505175A (ja) * | 2003-09-11 | 2007-03-08 | バセル ポリオレフィン ジーエムビーエイチ | ヘテロ相プロピレンコポリマーを製造するための多段方法 |
| EP1632529B1 (en) | 2004-09-02 | 2012-11-28 | Borealis Technology Oy | A pressureless polymer pipe, a composition therefore, and a process for preparing it |
| US8022142B2 (en) * | 2008-12-15 | 2011-09-20 | Exxonmobil Chemical Patents Inc. | Thermoplastic olefin compositions |
| JP5241111B2 (ja) * | 2007-02-16 | 2013-07-17 | 旭有機材工業株式会社 | プロピレン系樹脂組成物及びそれを用いて成形した配管部材 |
| ATE509967T1 (de) * | 2007-06-14 | 2011-06-15 | Borealis Tech Oy | Verfahren zur herstellung von propylen- copolymeren mit hilfe eines vorpolymerisierten katalysators |
| US8106127B2 (en) * | 2008-12-15 | 2012-01-31 | Exxonmobil Chemical Patents Inc. | Heterogeneous in-reactor polymer blends |
| US8093335B2 (en) * | 2008-12-15 | 2012-01-10 | Exxonmobil Chemical Patents Inc. | Thermoplastic polyolefin in-reactor blends and molded articles therefrom |
| US8101685B2 (en) * | 2008-12-15 | 2012-01-24 | Exxonmobil Chemical Patents Inc. | Thermoplastic elastomer polyolefin in-reactor blends and molded articles therefrom |
| US8410217B2 (en) * | 2008-12-15 | 2013-04-02 | Exxonmobil Chemical Patents Inc. | Thermoplastic polyolefin blends |
| US8497325B2 (en) | 2008-12-15 | 2013-07-30 | Exxonmobil Chemical Patents Inc. | Thermoplastic polyolefin blends and films therefrom |
| EP2368922B1 (en) * | 2010-03-22 | 2013-03-13 | Borealis AG | High modulus polypropylene composition for pipe applications |
| EP2675844B1 (en) | 2011-02-15 | 2017-10-11 | ExxonMobil Chemical Patents Inc. | Thermoplastic polyolefin blends |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339804A2 (en) * | 1988-04-29 | 1989-11-02 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making article made from the same |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5661415A (en) * | 1979-10-24 | 1981-05-26 | Mitsubishi Chem Ind Ltd | Preparation of propylene-ethylene block copolymer |
| JPS58201806A (ja) † | 1982-05-19 | 1983-11-24 | Chisso Corp | 後加工シ−ト用および吹込成形用高溶融粘弾性ポリプロピレンとその製造法 |
| DE4009169A1 (de) * | 1990-03-22 | 1991-09-26 | Hoechst Ag | Verfahren zur herstellung einer polypropylen-formmasse |
| DE4019053A1 (de) * | 1990-06-15 | 1991-12-19 | Basf Ag | Polymerisate des propylens mit breitem molmassenverhaeltnis q |
| US5218052A (en) † | 1991-02-04 | 1993-06-08 | Amoco Corporation | Olefin polymerization and copolymerization process |
| DE4206369A1 (de) * | 1992-02-29 | 1993-09-02 | Basf Ag | Verfahren zur herstellung von propylen-ethylen-copolymerisaten |
| IT1260497B (it) * | 1992-05-29 | 1996-04-09 | Himont Inc | Polimeri cristallini del propilene aventi migliorata processabilita' allo stato e processo per la loro preparazione |
| FI944761A0 (fi) † | 1994-10-11 | 1994-10-11 | Borealis Holding As | Ny polypropylenkomposition med vid molekylvikt distribution |
| AU2110597A (en) † | 1996-03-04 | 1997-09-22 | Borealis As | Multilayer pipe |
-
1996
- 1996-05-24 DE DE19621022.4A patent/DE19621022B4/de not_active Expired - Lifetime
-
1997
- 1997-05-09 AT AT97107622T patent/ATE221098T1/de active
- 1997-05-09 EP EP97107622A patent/EP0808870B2/de not_active Expired - Lifetime
- 1997-05-09 DE DE59707768T patent/DE59707768D1/de not_active Expired - Lifetime
- 1997-05-09 ES ES97107622T patent/ES2183041T3/es not_active Expired - Lifetime
- 1997-05-20 AU AU23515/97A patent/AU728337B2/en not_active Ceased
- 1997-05-22 US US08/861,592 patent/US5962595A/en not_active Expired - Lifetime
- 1997-05-22 IL IL12089697A patent/IL120896A/xx not_active IP Right Cessation
- 1997-05-22 TR TR97/00413A patent/TR199700413A2/xx unknown
- 1997-05-22 TW TW086106914A patent/TW474948B/zh not_active IP Right Cessation
- 1997-05-22 HU HU9700935A patent/HU225023B1/hu not_active IP Right Cessation
- 1997-05-23 CZ CZ19971603A patent/CZ291103B6/cs not_active IP Right Cessation
- 1997-05-23 JP JP13337497A patent/JP4174085B2/ja not_active Expired - Fee Related
- 1997-05-23 PL PL97320157A patent/PL188615B1/pl not_active IP Right Cessation
- 1997-05-23 SK SK655-97A patent/SK65597A3/sk unknown
- 1997-05-23 NO NO972371A patent/NO972371L/no not_active Application Discontinuation
- 1997-05-23 CA CA002205887A patent/CA2205887C/en not_active Expired - Fee Related
- 1997-05-23 ZA ZA9704516A patent/ZA974516B/xx unknown
- 1997-05-26 BR BR9703390A patent/BR9703390A/pt unknown
- 1997-05-26 BR BR9703396A patent/BR9703396A/pt active Search and Examination
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0339804A2 (en) * | 1988-04-29 | 1989-11-02 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making article made from the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1053628A (ja) | 1998-02-24 |
| IL120896A0 (en) | 1997-09-30 |
| NO972371L (no) | 1997-11-25 |
| HUP9700935A1 (hu) | 1998-06-29 |
| BR9703390A (pt) | 1998-09-15 |
| HU9700935D0 (en) | 1997-07-28 |
| ES2183041T3 (es) | 2003-03-16 |
| EP0808870B2 (de) | 2008-08-27 |
| PL320157A1 (en) | 1997-12-08 |
| PL188615B1 (pl) | 2005-03-31 |
| BR9703396A (pt) | 1998-09-15 |
| TR199700413A2 (xx) | 1997-12-21 |
| DE59707768D1 (de) | 2002-08-29 |
| EP0808870B1 (de) | 2002-07-24 |
| EP0808870A3 (de) | 1998-05-27 |
| ZA974516B (en) | 1997-11-24 |
| CA2205887C (en) | 2006-11-28 |
| DE19621022A1 (de) | 1997-11-27 |
| JP4174085B2 (ja) | 2008-10-29 |
| NO972371D0 (no) | 1997-05-23 |
| CZ291103B6 (cs) | 2002-12-11 |
| DE19621022B4 (de) | 2014-12-31 |
| US5962595A (en) | 1999-10-05 |
| CZ160397A3 (en) | 1997-12-17 |
| HU225023B1 (en) | 2006-05-29 |
| AU2351597A (en) | 1997-11-27 |
| ATE221098T1 (de) | 2002-08-15 |
| CA2205887A1 (en) | 1997-11-24 |
| IL120896A (en) | 2003-07-31 |
| TW474948B (en) | 2002-02-01 |
| EP0808870A2 (de) | 1997-11-26 |
| SK65597A3 (en) | 1999-06-11 |
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