RU2008133345A - Способ получения полиолов и их применение для получения полиуретанов - Google Patents

Способ получения полиолов и их применение для получения полиуретанов Download PDF

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RU2008133345A
RU2008133345A RU2008133345/04A RU2008133345A RU2008133345A RU 2008133345 A RU2008133345 A RU 2008133345A RU 2008133345/04 A RU2008133345/04 A RU 2008133345/04A RU 2008133345 A RU2008133345 A RU 2008133345A RU 2008133345 A RU2008133345 A RU 2008133345A
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amount
earth metal
alkaline earth
alkaline
polyols
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RU2008133345/04A
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RU2492190C2 (ru
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Клаус ЛОРЕНЦ (DE)
Клаус ЛОРЕНЦ
Арнульф ВЕРНЕР (DE)
Арнульф ВЕРНЕР
Маркус АЙХМАНН (DE)
Маркус АЙХМАНН
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Байер МатириальСайенс АГ (DE)
Байер Матириальсайенс Аг
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    • 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
    • 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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • 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
    • 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
    • C08G65/2648—Alkali metals or compounds thereof
    • 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
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
    • 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
    • C08G65/32—Polymers modified by chemical after-treatment
    • 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
    • C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G2650/22—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the initiator used in polymerisation
    • C08G2650/24—Polymeric initiators

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Polyethers (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

1. Способ получения полиолов катализируемым основаниями присоединением алкиленоксидов, содержащих по меньшей мере 10 мас.% этиленоксида, к многофункциональным инициирующим соединениям с активными в реакции Церевитинова атомами водорода в присутствии катализаторов на основе гидроксидов щелочных металлов, гидридов щелочных металлов, гидридов щелочноземельных металлов, карбоксилатов щелочных металлов, карбоксилатов щелочноземельных металлов или гидроксидов щелочноземельных металлов, концентрация которых составляет от 0,004 до 0,5 мас.% в пересчете на количество конечного продукта, причем нейтрализацию щелочных полимеризационноактивных центров сырого продукта присоединения алкиленоксидов осуществляют подачей серной кислоты, реализуемой таким образом, чтобы для нейтрализации содержащегося в сыром полимере количества катализатора было задействовано от 66 до 100 мол.% используемой кислоты только первой ступени диссоциации. ! 2. Способ по п.1, причем до или в процессе присоединения алкиленоксидов добавляют от 10 до 80 мас.% триглицеридов в пересчете на количество конечного продукта. ! 3. Применение полиолов, которые могут быть получены по п.1 или 2, для синтеза полиуретанов.

Claims (3)

1. Способ получения полиолов катализируемым основаниями присоединением алкиленоксидов, содержащих по меньшей мере 10 мас.% этиленоксида, к многофункциональным инициирующим соединениям с активными в реакции Церевитинова атомами водорода в присутствии катализаторов на основе гидроксидов щелочных металлов, гидридов щелочных металлов, гидридов щелочноземельных металлов, карбоксилатов щелочных металлов, карбоксилатов щелочноземельных металлов или гидроксидов щелочноземельных металлов, концентрация которых составляет от 0,004 до 0,5 мас.% в пересчете на количество конечного продукта, причем нейтрализацию щелочных полимеризационноактивных центров сырого продукта присоединения алкиленоксидов осуществляют подачей серной кислоты, реализуемой таким образом, чтобы для нейтрализации содержащегося в сыром полимере количества катализатора было задействовано от 66 до 100 мол.% используемой кислоты только первой ступени диссоциации.
2. Способ по п.1, причем до или в процессе присоединения алкиленоксидов добавляют от 10 до 80 мас.% триглицеридов в пересчете на количество конечного продукта.
3. Применение полиолов, которые могут быть получены по п.1 или 2, для синтеза полиуретанов.
RU2008133345/04A 2007-08-16 2008-08-14 Способ получения полиолов и их применение для получения полиуретанов RU2492190C2 (ru)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007038436.1 2007-08-16
DE102007038436A DE102007038436A1 (de) 2007-08-16 2007-08-16 Verfahren zur Herstellung von Polyolen

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RU2008133345A true RU2008133345A (ru) 2010-02-20
RU2492190C2 RU2492190C2 (ru) 2013-09-10

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US (1) US8865945B2 (ru)
EP (1) EP2028211B1 (ru)
JP (1) JP5529403B2 (ru)
KR (1) KR101514070B1 (ru)
CN (1) CN101367926B (ru)
BR (1) BRPI0803065A2 (ru)
CA (1) CA2638680A1 (ru)
DE (1) DE102007038436A1 (ru)
ES (1) ES2388757T3 (ru)
MX (1) MX2008010377A (ru)
PL (1) PL2028211T3 (ru)
PT (1) PT2028211E (ru)
RU (1) RU2492190C2 (ru)
SG (1) SG150460A1 (ru)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028555A1 (de) 2008-06-16 2009-12-17 Bayer Materialscience Ag Verfahren zur Herstellung von Polyolen
DE102008051882A1 (de) * 2008-10-16 2010-04-29 Bayer Materialscience Ag Verfahren zur Herstellung von Polyetheresterpolyolen
EP2443173A1 (en) * 2009-06-18 2012-04-25 Huntsman International LLC A process for neutralizing an unneutralised polyether polyol
DE102009043616A1 (de) * 2009-09-29 2011-03-31 Bayer Materialscience Ag Verfahren zur Herstellung von aminogruppenhaltigen Polyolen
EP2365019A1 (de) 2010-03-13 2011-09-14 Bayer MaterialScience AG Verfahren zur Herstellung von Polyetherpolyolen
ES2525022T3 (es) * 2010-12-20 2014-12-16 Bayer Intellectual Property Gmbh Procedimiento para la preparación de polioléteres
KR20140007822A (ko) * 2010-12-20 2014-01-20 바이엘 인텔렉쳐 프로퍼티 게엠베하 폴리에테르 에스테르 폴리올의 제조 방법
SG2014014567A (en) 2013-02-22 2014-09-26 Bayer Materialscience Ag Process for preparing polyether polyols
MX337785B (es) 2013-02-22 2016-03-18 Bayer Materialscience Ag Procedimiento de preparacion de polioles de polieter.
KR20190008212A (ko) 2016-05-13 2019-01-23 코베스트로 도이칠란트 아게 폴리옥시알킬렌 폴리올의 제조 방법
CN108047424B (zh) * 2017-12-14 2020-11-27 山东一诺威聚氨酯股份有限公司 坐垫用改性mdi及制备方法
EP3741788A1 (de) 2019-05-24 2020-11-25 Covestro Deutschland AG Verfahren zur herstellung von polyoxyalkylenpolyol-mischungen
EP3838963A1 (de) 2019-12-17 2021-06-23 Covestro Deutschland AG Verfahren zur herstellung von polyoxyalkylenpolyesterpolyolen
US11572440B2 (en) 2020-02-18 2023-02-07 Covestro Llc Methods for purifying polyols containing oxyalkylene units to reduce 2-methyl-2-pentenal content
US11718705B2 (en) 2021-07-28 2023-08-08 Covestro Llc In-situ formed polyether polyols, a process for their preparation, and a process for the preparation of polyurethane foams
CN118159578A (zh) 2021-10-07 2024-06-07 科思创德国股份有限公司 制备聚氧化烯聚酯多元醇的方法

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425845A (en) * 1945-04-21 1947-08-19 Carbide & Carbon Chem Corp Mixtures of polyoxyalkylene diols and methods of making such mixtures
US2983763A (en) * 1956-04-12 1961-05-09 Jefferson Chem Co Inc Decolorizing the product of reacting an alkylene oxide with a hydroxylcontaining organic compound in the presence of an alkaline reacting catalyst
US3823145A (en) 1968-07-26 1974-07-09 Basf Wyandotte Corp Removal of impurities from polyols
US4110268A (en) 1976-09-27 1978-08-29 Witco Chemical Corporation Polyether polyols and polyurethane foams made therefrom
JPS5645923A (en) * 1979-09-21 1981-04-25 Dai Ichi Kogyo Seiyaku Co Ltd Purification of polyether polyol
DE3030737A1 (de) * 1980-08-14 1982-03-25 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von hochaktivierten, hydroxylgruppenhaltigen polyoxyalkylen-polyoxyethylenethern
US4521548A (en) 1983-04-12 1985-06-04 The Dow Chemical Company Preparation of polyether polyols
DE3740634A1 (de) * 1987-12-01 1989-06-15 Bayer Ag Polyetherpolyole auf basis o-toluylendiamin, verfahren zu ihrer herstellung und verwendung fuer polyurethan- und polyisocyanurat-kunststoffe
JP3263450B2 (ja) 1992-11-27 2002-03-04 三井化学株式会社 粗ポリオキシプロピレンポリオールの精製方法
US5304665A (en) * 1993-04-05 1994-04-19 Arco Chemical Technology, L.P. Process for the preparation of highly esterified alkoxylated polyol compositions
US5399728A (en) * 1993-04-05 1995-03-21 Arco Chemical Technology, L.P. Process for the preparation of highly esterified alkoxylated polyol compositions
US5470813A (en) 1993-11-23 1995-11-28 Arco Chemical Technology, L.P. Double metal cyanide complex catalysts
US5712216A (en) * 1995-05-15 1998-01-27 Arco Chemical Technology, L.P. Highly active double metal cyanide complex catalysts
DE4408004A1 (de) * 1994-03-10 1995-09-14 Bayer Ag Verfahren zur Gewinnung von reinen, fließfähigen Alkali- oder Erdalkalisalzen aus den Salzrückständen der Polyetherpolyolproduktion
US5482908A (en) * 1994-09-08 1996-01-09 Arco Chemical Technology, L.P. Highly active double metal cyanide catalysts
WO1996020972A2 (en) 1995-01-05 1996-07-11 Bayer Corporation A PROCESS FOR THE REMOVAL OF A pH-BASIC MATERIAL FROM A POLYETHER POLYOL
US5545601A (en) * 1995-08-22 1996-08-13 Arco Chemical Technology, L.P. Polyether-containing double metal cyanide catalysts
JP3651994B2 (ja) * 1996-01-12 2005-05-25 三井化学株式会社 ポリオキシアルキレンポリオールおよびその製造方法
US5627120A (en) 1996-04-19 1997-05-06 Arco Chemical Technology, L.P. Highly active double metal cyanide catalysts
JPH1030023A (ja) 1996-07-16 1998-02-03 Asahi Glass Co Ltd ポリ（またはモノ）オール組成物およびポリウレタンの製造方法
US5714428A (en) 1996-10-16 1998-02-03 Arco Chemical Technology, L.P. Double metal cyanide catalysts containing functionalized polymers
US5786405A (en) * 1996-11-01 1998-07-28 Bayer Corporation Amine-initiated polyether polyols and a process for their production
JP3174520B2 (ja) * 1997-01-07 2001-06-11 三井化学株式会社 イソシアネート基末端プレポリマー、その製造方法ならびに硬化性ポリウレタン組成物
US6162214A (en) * 1997-10-30 2000-12-19 Eclipse Surgical Technologies, Inc. Corning device for myocardial revascularization
AU2294400A (en) * 1999-02-11 2000-08-29 Bayer Aktiengesellschaft Double metal cyanide catalysts for producing polyether polyols
DE19905611A1 (de) 1999-02-11 2000-08-17 Bayer Ag Doppelmetallcyanid-Katalysatoren für die Herstellung von Polyetherpolyolen
US6376625B1 (en) * 1999-08-25 2002-04-23 The Dow Chemical Company Process for purifying polyethers
US20030158450A1 (en) * 2000-05-15 2003-08-21 Melis Hasselaar Process for the preparation of polyether polyols
DE10024313A1 (de) * 2000-05-17 2001-11-22 Basf Ag Verfahren zur Abtrennung von Alkalimetallionen aus Alkoxylaten
DE10223054A1 (de) * 2002-05-24 2003-12-04 Basf Ag Verfahren zur Herstellung von Polyetherolen
US6710096B2 (en) 2002-07-22 2004-03-23 Basf Corporation Polyether polyol for foam applications
US6869543B2 (en) 2003-02-21 2005-03-22 Bayer Polymers Llc Amine-initiated polyether polyols and a process for their production
US6762214B1 (en) 2003-03-18 2004-07-13 Bayer Polymers Llc Process for the production of rigid foams from alkaline polyether polyols
JP4290141B2 (ja) * 2004-07-29 2009-07-01 三洋化成工業株式会社 ポリエーテルの精製方法
CN1320029C (zh) 2005-05-31 2007-06-06 抚顺佳化聚氨酯有限公司 一种聚醚多元醇的制备方法
US9284401B2 (en) * 2006-11-13 2016-03-15 Bayer Materialscience Llc Process for the preparation of polyether-ester polyols
DE102008028555A1 (de) * 2008-06-16 2009-12-17 Bayer Materialscience Ag Verfahren zur Herstellung von Polyolen

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Publication number Publication date
BRPI0803065A2 (pt) 2009-05-12
PL2028211T3 (pl) 2012-11-30
CN101367926B (zh) 2015-09-16
JP2009046675A (ja) 2009-03-05
KR101514070B1 (ko) 2015-04-21
JP5529403B2 (ja) 2014-06-25
PT2028211E (pt) 2012-08-30
EP2028211B1 (de) 2012-06-27
CN101367926A (zh) 2009-02-18
ES2388757T3 (es) 2012-10-18
RU2492190C2 (ru) 2013-09-10
MX2008010377A (es) 2009-03-05
SG150460A1 (en) 2009-03-30
KR20090017990A (ko) 2009-02-19
US8865945B2 (en) 2014-10-21
US20090048420A1 (en) 2009-02-19
DE102007038436A1 (de) 2009-02-19
CA2638680A1 (en) 2009-02-16
EP2028211A1 (de) 2009-02-25

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