AR002561A1 - Proceso para elaborar un poliol terminado con unidades de oxido de etileno a partir de polioles catalizados por cianuro metalico doble - Google Patents
Proceso para elaborar un poliol terminado con unidades de oxido de etileno a partir de polioles catalizados por cianuro metalico dobleInfo
- Publication number
- AR002561A1 AR002561A1 ARP960103266A AR10326696A AR002561A1 AR 002561 A1 AR002561 A1 AR 002561A1 AR P960103266 A ARP960103266 A AR P960103266A AR 10326696 A AR10326696 A AR 10326696A AR 002561 A1 AR002561 A1 AR 002561A1
- Authority
- AR
- Argentina
- Prior art keywords
- polyol
- ethylene oxide
- polyols
- develop
- units
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2642—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds characterised by the catalyst used
- C08G65/2645—Metals or compounds thereof, e.g. salts
- C08G65/2663—Metal cyanide catalysts, i.e. DMC's
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4833—Polyethers containing oxyethylene units
- C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
- C08G18/4841—Polyethers containing oxyethylene units and other oxyalkylene units containing oxyethylene end groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4866—Polyethers having a low unsaturation value
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2603—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen
- C08G65/2606—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups
- C08G65/2609—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds the other compounds containing oxygen containing hydroxyl groups containing aliphatic hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/26—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds
- C08G65/2642—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring from cyclic ethers and other compounds characterised by the catalyst used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/04—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/28—Preparatory processes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2190/00—Compositions for sealing or packing joints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/14—Macromolecular compounds according to C08L59/00 - C08L87/00; Derivatives thereof
- C08L2666/22—Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Toxicology (AREA)
- Polyethers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Un proceso para elaborar polioles de baja insaturación, altamente primarios, comprende mezclar un poliol elaborado mediante catálisis de cianurometálico doble (DMC) con un poliol elaborado mediante catálisis básica, y hacerreaccionar la mezcla de poliol con óxido de etileno para producir unpoliol terminado con óxido de etileno. El proceso supera los problemas del enfoque de recatálisis convencional para elaborar polioles terminados con EO apartir de poliolescatalizados por DMC.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/493,372 US5563221A (en) | 1995-06-21 | 1995-06-21 | Process for making ethylene oxide-capped polyols from double metal cyanide-catalyzed polyols |
Publications (1)
Publication Number | Publication Date |
---|---|
AR002561A1 true AR002561A1 (es) | 1998-03-25 |
Family
ID=23959967
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP960103266A AR002561A1 (es) | 1995-06-21 | 1996-06-21 | Proceso para elaborar un poliol terminado con unidades de oxido de etileno a partir de polioles catalizados por cianuro metalico doble |
Country Status (19)
Country | Link |
---|---|
US (1) | US5563221A (es) |
EP (1) | EP0750001B1 (es) |
JP (1) | JP3247612B2 (es) |
KR (1) | KR100451872B1 (es) |
CN (1) | CN1090198C (es) |
AR (1) | AR002561A1 (es) |
AT (1) | ATE199094T1 (es) |
AU (1) | AU694874B2 (es) |
BR (1) | BR9602829A (es) |
CA (1) | CA2177871C (es) |
DE (1) | DE69611743T2 (es) |
DK (1) | DK0750001T3 (es) |
ES (1) | ES2153938T3 (es) |
GR (1) | GR3035686T3 (es) |
HU (1) | HU217692B (es) |
MX (1) | MX9602435A (es) |
RO (1) | RO117101B1 (es) |
TW (1) | TW322470B (es) |
ZA (1) | ZA965263B (es) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5700847A (en) * | 1995-12-04 | 1997-12-23 | Arco Chemical Technology, L.P. | Molded polyurethane foam with enhanced physical properties |
US5708118A (en) * | 1996-10-11 | 1998-01-13 | Arco Chemical Technology, L.P. | Spandex elastomers |
US5723563A (en) * | 1996-10-11 | 1998-03-03 | Arco Chemical Technology, L.P. | Spandex elastomers |
US5691441A (en) * | 1996-10-11 | 1997-11-25 | Arco Chemical Technology, L.P. | Spandex elastomers |
US6008263A (en) * | 1998-04-03 | 1999-12-28 | Lyondell Chemical Worldwide, Inc. | Molded and slab polyurethane foam prepared from double metal cyanide complex-catalyzed polyoxyalkylene polyols and polyols suitable for the preparation thereof |
US6063309A (en) * | 1998-07-13 | 2000-05-16 | Arco Chemical Technology L.P. | Dispersion polyols for hypersoft polyurethane foam |
DE19918727A1 (de) | 1999-04-24 | 2000-10-26 | Bayer Ag | Langkettige Polyetherpolyole mit hohem Anteil primärer OH-Gruppen |
US6642423B2 (en) | 1999-07-09 | 2003-11-04 | Dow Global Technologies, Inc. | Polymerization of ethylene oxide using metal cyanide catalysts |
DE60027302T2 (de) | 1999-07-09 | 2007-01-18 | Dow Global Technologies, Inc., Midland | Polymerisierung von ethylenoxid mit der verwendung von metallcyanidkatalysatoren |
DE19944762A1 (de) * | 1999-09-17 | 2001-03-22 | Basf Ag | Verfahren zur Herstellung von Blockweichschaumpolyolen |
AU2001255735A1 (en) | 2000-04-28 | 2001-11-12 | Synuthane International, Inc. | Double metal cyanide catalysts containing polyglycol ether complexing agents |
KR20030045674A (ko) * | 2000-05-19 | 2003-06-11 | 다우 글로벌 테크놀로지스 인크. | 포스파제늄 지지 촉매의 제조 및 사용 방법 |
US6201035B1 (en) | 2000-05-24 | 2001-03-13 | Basf Corporation | Use of low unsaturated polyether polyols in high resilience slabstock foam applications |
US6344494B1 (en) | 2000-05-24 | 2002-02-05 | Basf Corporation | Use of low unsaturated polyether polyols in slabstock foam applications |
RU2003115307A (ru) * | 2000-10-23 | 2004-11-10 | Хантсмэн Интернэшнл Ллс (Us) | Герметизирующие композиции с высокими эксплуатационными характеристиками на основе форполимеров меди метандифенилдиизоцианатных |
US6835801B2 (en) * | 2002-07-19 | 2004-12-28 | Bayer Antwerp, N.V. | Activated starter mixtures and the processes related thereto |
US20040064001A1 (en) * | 2002-09-30 | 2004-04-01 | Stephan Ehlers | Processes for preparing ethylene oxide-capped polyols |
US7226887B2 (en) * | 2002-11-07 | 2007-06-05 | Dow Global Technologies Inc. | Method for preparing metal cyanide catalysts using polymerizable complexing agents |
US7378559B2 (en) | 2003-03-07 | 2008-05-27 | Dow Global Technologies Inc. | Continuous process and system of producing polyether polyols |
DE10324998A1 (de) * | 2003-06-03 | 2004-12-23 | Basf Ag | Herstellung von Polyetheralkoholen unter Verwendung der DMC-Katalyse |
US6884826B2 (en) * | 2003-06-09 | 2005-04-26 | Bayer Antwerp, N.V. | Process for preparing double metal cyanide catalyzed polyols |
US20050014979A1 (en) * | 2003-07-08 | 2005-01-20 | Eleveld Michiel Barend | Preparation of an alkoxylate composition using a double metal cyanide catalyst |
US7005552B2 (en) * | 2003-11-03 | 2006-02-28 | Bayer Materialscience Llc | Single reactor synthesis of KOH-capped polyols based on DMC-synthesized intermediates |
US7186867B2 (en) * | 2004-04-21 | 2007-03-06 | Basf Aktiengesellschaft | Process for preparing reactive polyether polyols having an ethylene oxide end block |
DE102004047524A1 (de) * | 2004-09-28 | 2006-03-30 | Basf Ag | Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen |
DE102006006696A1 (de) * | 2006-02-14 | 2007-08-23 | Clariant International Limited | Polyalkylenglykol-Schmiermittelbasisöle mit enger Molmassenverteilung |
DE102008002091A1 (de) | 2007-05-31 | 2008-12-11 | Basf Se | Verfahren zur Herstellung von Monoalkylenglykolmonoethern |
EP2563839B1 (de) | 2010-04-30 | 2014-12-17 | Basf Se | Polyetherpolyole, verfahren zur herstellung von polyetherpolyolen, sowie deren verwendung zur herstellung von polyurethanen |
US9115246B2 (en) | 2010-04-30 | 2015-08-25 | Basf Se | Polyether polyols, process for preparing polyether polyols and their use for producing polyurethanes |
CN103221446B (zh) * | 2010-11-18 | 2016-08-03 | 陶氏环球技术有限责任公司 | 抗燃软质聚氨酯泡沫 |
EP2726543A2 (en) * | 2011-06-29 | 2014-05-07 | Dow Global Technologies LLC | Thermally stable flame resistant flexible polyurethane foam |
US9035105B2 (en) | 2012-07-20 | 2015-05-19 | Bayer Materialscience Llc | Process for the in situ production of polyether polyols based on renewable materials and their use in the production of flexible polyurethane foams |
US9051412B2 (en) | 2013-03-14 | 2015-06-09 | Bayer Materialscience Llc | Base-catalyzed, long chain, active polyethers from short chain DMC-catalyzed starters |
US20230147479A1 (en) | 2021-11-05 | 2023-05-11 | Covestro Llc | Processes and production plants for producing polyols |
PL442356A1 (pl) | 2022-09-26 | 2024-04-02 | Pcc Rokita Spółka Akcyjna | Poliol polieterowy, sposób jego wytwarzania i jego zastosowanie oraz elastyczna pianka poliuretanowa |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3427256A (en) * | 1963-02-14 | 1969-02-11 | Gen Tire & Rubber Co | Double metal cyanide complex compounds |
US3427335A (en) * | 1963-02-14 | 1969-02-11 | Gen Tire & Rubber Co | Double metal cyanides complexed with an acyclic aliphatic saturated monoether,an ester and a cyclic ether and methods for making the same |
DE1222261B (de) * | 1963-04-20 | 1966-08-04 | Bayer Ag | Verfahren zur Herstellung von Polyaethern durch Polymerisation von Alkylenoxyden |
US3317508A (en) * | 1964-11-09 | 1967-05-02 | Union Carbide Corp | Process for making alkylene oxidepolyol adducts |
US3823145A (en) * | 1968-07-26 | 1974-07-09 | Basf Wyandotte Corp | Removal of impurities from polyols |
US3715402A (en) * | 1969-08-08 | 1973-02-06 | Basf Wyandotte Corp | Removal of catalysts from polyols |
US3829505A (en) * | 1970-02-24 | 1974-08-13 | Gen Tire & Rubber Co | Polyethers and method for making the same |
US3941849A (en) * | 1972-07-07 | 1976-03-02 | The General Tire & Rubber Company | Polyethers and method for making the same |
CA1155871A (en) * | 1980-10-16 | 1983-10-25 | Gencorp Inc. | Method for treating polypropylene ether and poly-1,2- butylene ether polyols |
AU551979B2 (en) * | 1982-03-31 | 1986-05-15 | Shell Internationale Research Maatschappij B.V. | Epoxy polymerisation catalysts |
AU552988B2 (en) * | 1982-03-31 | 1986-06-26 | Shell Internationale Research Maatschappij B.V. | Polymerizing epoxides and catalyst suspensions for this |
US4495081A (en) * | 1982-07-13 | 1985-01-22 | The Dow Chemical Company | Compositions containing polyether polyols and aliphatic primary amines |
US4687851A (en) * | 1985-08-15 | 1987-08-18 | The Dow Chemical Company | Polyurethane elastomers prepared from high equivalent weight polyahls |
US4721818A (en) * | 1987-03-20 | 1988-01-26 | Atlantic Richfield Company | Purification of polyols prepared using double metal cyanide complex catalysts |
US4877906A (en) * | 1988-11-25 | 1989-10-31 | Arco Chemical Technology, Inc. | Purification of polyols prepared using double metal cyanide complex catalysts |
EP0532520A4 (en) * | 1990-03-30 | 1993-05-19 | Olin Corporation | Process for removing double metal cyanide complex catalyst residues from catalyst-residue containing polyols |
US5235114A (en) * | 1991-04-29 | 1993-08-10 | Olin Corporation | Process for purifying and end-capping polyols made using double metal cyanide catalysts |
US5144093A (en) * | 1991-04-29 | 1992-09-01 | Olin Corporation | Process for purifying and end-capping polyols made using double metal cyanide catalysts |
US5158922A (en) * | 1992-02-04 | 1992-10-27 | Arco Chemical Technology, L.P. | Process for preparing metal cyanide complex catalyst |
-
1995
- 1995-06-21 US US08/493,372 patent/US5563221A/en not_active Expired - Lifetime
-
1996
- 1996-05-29 JP JP15637496A patent/JP3247612B2/ja not_active Expired - Lifetime
- 1996-05-31 CA CA002177871A patent/CA2177871C/en not_active Expired - Lifetime
- 1996-06-17 AT AT96304478T patent/ATE199094T1/de not_active IP Right Cessation
- 1996-06-17 DK DK96304478T patent/DK0750001T3/da active
- 1996-06-17 EP EP96304478A patent/EP0750001B1/en not_active Expired - Lifetime
- 1996-06-17 ES ES96304478T patent/ES2153938T3/es not_active Expired - Lifetime
- 1996-06-17 DE DE69611743T patent/DE69611743T2/de not_active Expired - Lifetime
- 1996-06-17 TW TW085107271A patent/TW322470B/zh active
- 1996-06-19 BR BR9602829A patent/BR9602829A/pt not_active IP Right Cessation
- 1996-06-19 HU HU9601691A patent/HU217692B/hu not_active IP Right Cessation
- 1996-06-19 AU AU56057/96A patent/AU694874B2/en not_active Ceased
- 1996-06-20 RO RO96-01270A patent/RO117101B1/ro unknown
- 1996-06-20 KR KR1019960022503A patent/KR100451872B1/ko not_active IP Right Cessation
- 1996-06-21 MX MX9602435A patent/MX9602435A/es unknown
- 1996-06-21 CN CN96107163A patent/CN1090198C/zh not_active Expired - Lifetime
- 1996-06-21 AR ARP960103266A patent/AR002561A1/es unknown
- 1996-06-21 ZA ZA965263A patent/ZA965263B/xx unknown
-
2001
- 2001-03-30 GR GR20010400536T patent/GR3035686T3/el not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CN1150582A (zh) | 1997-05-28 |
GR3035686T3 (en) | 2001-06-29 |
EP0750001B1 (en) | 2001-02-07 |
HUP9601691A3 (en) | 1997-12-29 |
HU9601691D0 (en) | 1996-08-28 |
DK0750001T3 (da) | 2001-03-19 |
ES2153938T3 (es) | 2001-03-16 |
TW322470B (es) | 1997-12-11 |
KR100451872B1 (ko) | 2004-12-04 |
CN1090198C (zh) | 2002-09-04 |
CA2177871C (en) | 2009-07-28 |
DE69611743T2 (de) | 2001-05-31 |
EP0750001A2 (en) | 1996-12-27 |
ATE199094T1 (de) | 2001-02-15 |
RO117101B1 (ro) | 2001-10-30 |
US5563221A (en) | 1996-10-08 |
CA2177871A1 (en) | 1996-12-22 |
KR970001292A (ko) | 1997-01-24 |
MX9602435A (es) | 1997-02-28 |
JPH093186A (ja) | 1997-01-07 |
HU217692B (hu) | 2000-03-28 |
DE69611743D1 (de) | 2001-03-15 |
BR9602829A (pt) | 1998-10-06 |
AU694874B2 (en) | 1998-07-30 |
AU5605796A (en) | 1997-01-09 |
HUP9601691A2 (en) | 1997-04-28 |
ZA965263B (en) | 1997-01-09 |
JP3247612B2 (ja) | 2002-01-21 |
EP0750001A3 (en) | 1997-07-23 |
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