[go: up one dir, main page]

MX9602435A - Proceso para elaborar polioles cubiertos con oxido de etileno a partir de polioles catalizados por cianuro metalico doble. - Google Patents

Proceso para elaborar polioles cubiertos con oxido de etileno a partir de polioles catalizados por cianuro metalico doble.

Info

Publication number
MX9602435A
MX9602435A MX9602435A MX9602435A MX9602435A MX 9602435 A MX9602435 A MX 9602435A MX 9602435 A MX9602435 A MX 9602435A MX 9602435 A MX9602435 A MX 9602435A MX 9602435 A MX9602435 A MX 9602435A
Authority
MX
Mexico
Prior art keywords
polyols
ethylene oxide
capped
metal cyanide
double metal
Prior art date
Application number
MX9602435A
Other languages
English (en)
Inventor
Jose F Pazos
Original Assignee
Arco Chem Tech
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arco Chem Tech filed Critical Arco Chem Tech
Publication of MX9602435A publication Critical patent/MX9602435A/es

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 insaturacion, altamente primarios, comprende mezclar un poliol elaborado mediante catálisis de cianuro metálico doble (DMC) con un poliol elaborado mediante catálisis básica, y hacer reaccionar la mezcla de poliol con oxido de etileno para producir un poliol cubierto conoxido de etileno. El proceso supera los problemas del enfoque de recatálisis convencional para elaborar polioles cubiertos con EO a partir de polioles catalizados por DMC.
MX9602435A 1995-06-21 1996-06-21 Proceso para elaborar polioles cubiertos con oxido de etileno a partir de polioles catalizados por cianuro metalico doble. MX9602435A (es)

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
MX9602435A true MX9602435A (es) 1997-02-28

Family

ID=23959967

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9602435A MX9602435A (es) 1995-06-21 1996-06-21 Proceso para elaborar polioles cubiertos con 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)

* Cited by examiner, † Cited by third party
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
US5691441A (en) * 1996-10-11 1997-11-25 Arco Chemical Technology, L.P. Spandex elastomers
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
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
AR025544A1 (es) 1999-07-09 2002-12-04 Dow Global Technologies Inc Proceso para preparar polimeros de poli(oxietileno) y los polimeros de poli(oxietileno) obtenidos con dicho proceso
US6642423B2 (en) 1999-07-09 2003-11-04 Dow Global Technologies, Inc. Polymerization of ethylene oxide using metal cyanide catalysts
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
JP4969012B2 (ja) * 2000-05-19 2012-07-04 ダウ グローバル テクノロジーズ エルエルシー 担持ホスファゼニウム触媒の製造及び使用方法
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
EP1328564A1 (en) * 2000-10-23 2003-07-23 Huntsman International Llc High performance sealant formulations based on mdi prepolymers
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
ZA200503601B (en) * 2002-11-07 2006-11-29 Dow Global Technologies Inc Method for preparing metal cyanide catalysts using polymerizable complexing agents
BRPI0408669A (pt) 2003-03-07 2006-03-28 Dow Global Technologies Inc processo e sistema contìnuos para produzir polióis poliéteres
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
KR20130060213A (ko) 2010-04-30 2013-06-07 바스프 에스이 폴리에테르 폴리올, 폴리에테르 폴리올의 제조 방법, 및 폴리우레탄 제조를 위한 그의 용도
US9115246B2 (en) 2010-04-30 2015-08-25 Basf Se Polyether polyols, process for preparing polyether polyols and their use for producing polyurethanes
KR101865980B1 (ko) * 2010-11-18 2018-06-08 다우 글로벌 테크놀로지스 엘엘씨 난연성 가요성 폴리우레탄 발포체
CN103717654A (zh) * 2011-06-29 2014-04-09 陶氏环球技术有限责任公司 热稳定性抗燃软质聚氨酯泡沫
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)

* Cited by examiner, † Cited by third party
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
AU552988B2 (en) * 1982-03-31 1986-06-26 Shell Internationale Research Maatschappij B.V. Polymerizing epoxides and catalyst suspensions for this
AU551979B2 (en) * 1982-03-31 1986-05-15 Shell Internationale Research Maatschappij B.V. Epoxy polymerisation catalysts
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
MY106397A (en) * 1990-03-30 1995-05-30 Olin Corp Acid-catalyzed fabrication of precursors for use in making polyols and ethylene oxide capping of polyols made using double metal cyanide cayalysts
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

Also Published As

Publication number Publication date
DE69611743T2 (de) 2001-05-31
DE69611743D1 (de) 2001-03-15
AR002561A1 (es) 1998-03-25
US5563221A (en) 1996-10-08
TW322470B (es) 1997-12-11
ES2153938T3 (es) 2001-03-16
JPH093186A (ja) 1997-01-07
CA2177871A1 (en) 1996-12-22
EP0750001A3 (en) 1997-07-23
DK0750001T3 (da) 2001-03-19
EP0750001A2 (en) 1996-12-27
RO117101B1 (ro) 2001-10-30
KR970001292A (ko) 1997-01-24
AU5605796A (en) 1997-01-09
CN1090198C (zh) 2002-09-04
EP0750001B1 (en) 2001-02-07
HU217692B (hu) 2000-03-28
CA2177871C (en) 2009-07-28
ZA965263B (en) 1997-01-09
JP3247612B2 (ja) 2002-01-21
KR100451872B1 (ko) 2004-12-04
HUP9601691A3 (en) 1997-12-29
CN1150582A (zh) 1997-05-28
AU694874B2 (en) 1998-07-30
HUP9601691A2 (en) 1997-04-28
GR3035686T3 (en) 2001-06-29
BR9602829A (pt) 1998-10-06
HU9601691D0 (en) 1996-08-28
ATE199094T1 (de) 2001-02-15

Similar Documents

Publication Publication Date Title
MX9602435A (es) Proceso para elaborar polioles cubiertos con oxido de etileno a partir de polioles catalizados por cianuro metalico doble.
MX9804568A (es) Proceso para la preparacion de polioxialquilenpolieter polioles que tienen niveles bajos de metales de transicion, preparados utilizando catalizador complejo de cianuro de metal doble.
TW428002B (en) A method of making double metal cyanide complex catalysts
CA2282640A1 (en) Process for making double metal cyanide catalysts
HK1049344A1 (en) Method for preparing polyetherpolyols.
TW374737B (en) Highly active double metal cyanide complex catalysts
MX9603549A (es) Catalizadores mejorados de cianuro dimetalico que contiene polieter.
HK1040655A1 (en) Bimetallic cyanide catalysts for producing polyether polyols.
AU2001242431A1 (en) Method for producing polyetherpolyols
MY113616A (en) Polymerization catalyst for alkylene oxide compound and production process of poly (alkylene oxide)
BR0304272A (pt) Processos para preparar polióis capeados com óxido de etileno
AU2294400A (en) Double metal cyanide catalysts for producing polyether polyols
EP1038900A3 (de) Doppelmetallcyanid-Katalysatoren für die Herstellung von Polyetherpolyolen
EP0369487A3 (en) Process for the preparation of polyether polyols with reduced unsaturation
CA2375262A1 (en) Method for producing bisphenol alcoxylates
EP0798328A3 (en) Process for the preparation of polycarbonate copolyether polyols
PL353213A1 (en) Polyether alcohols
MY106397A (en) Acid-catalyzed fabrication of precursors for use in making polyols and ethylene oxide capping of polyols made using double metal cyanide cayalysts
AU5411899A (en) Bimetallic-cyanide catalysts used for preparing polyether polyols
AU2798000A (en) Method for preparing polyether polyols
EP0362688A3 (en) Process for preparing high viscosity, low unsaturation polyoxyalkylene block polyethers
HK1040653A1 (en) Bimetallic cyanide catalysts for producing polyether polyols.
AU1148599A (en) Double metal cyanide catalysts containing polyester for preparing polyether polyoles
AU4547200A (en) Method for the production of polyurethanes
ZA965855B (en) Polyols having reduced unsaturation and a process for producing same.