DE69634930T2 - Verfahren zur herstellung von polyoxyalkylenpolyolen, mit einem niedrigen gehalt an übergangsmetallen, die unter verwendung von doppelmetallcyanidkomplexkatalysatoren hergestellt wunden - Google Patents

Verfahren zur herstellung von polyoxyalkylenpolyolen, mit einem niedrigen gehalt an übergangsmetallen, die unter verwendung von doppelmetallcyanidkomplexkatalysatoren hergestellt wunden Download PDF

Info

Publication number
DE69634930T2
DE69634930T2 DE69634930T DE69634930T DE69634930T2 DE 69634930 T2 DE69634930 T2 DE 69634930T2 DE 69634930 T DE69634930 T DE 69634930T DE 69634930 T DE69634930 T DE 69634930T DE 69634930 T2 DE69634930 T2 DE 69634930T2
Authority
DE
Germany
Prior art keywords
catalyst
metal cyanide
double metal
oxyalkylation
cyanide complex
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.)
Expired - Lifetime
Application number
DE69634930T
Other languages
German (de)
English (en)
Other versions
DE69634930D1 (de
Inventor
Yiannakis Televantos
Bi Le-Khac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Antwerpen NV
Original Assignee
Bayer Antwerpen NV
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24310993&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69634930(T2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Bayer Antwerpen NV filed Critical Bayer Antwerpen NV
Application granted granted Critical
Publication of DE69634930D1 publication Critical patent/DE69634930D1/de
Publication of DE69634930T2 publication Critical patent/DE69634930T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular 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
    • C08G65/2642Macromolecular 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
    • C08G65/2645Metals or compounds thereof, e.g. salts
    • C08G65/2663Metal cyanide catalysts, i.e. DMC's
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/04Macromolecular 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 only
    • C08G65/06Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/08Saturated oxiranes
    • C08G65/10Saturated oxiranes characterised by the catalysts used
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G65/00Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G65/02Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
    • C08G65/26Macromolecular 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
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/584Recycling of catalysts

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)
DE69634930T 1995-12-22 1996-12-19 Verfahren zur herstellung von polyoxyalkylenpolyolen, mit einem niedrigen gehalt an übergangsmetallen, die unter verwendung von doppelmetallcyanidkomplexkatalysatoren hergestellt wunden Expired - Lifetime DE69634930T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US577986 1990-09-05
US08/577,986 US5767323A (en) 1995-12-22 1995-12-22 Process for preparing polyoxyalkylene polyether polyols having low levels of transition metals through double metal cyanide complex polyoxyalkylation
PCT/EP1996/005708 WO1997023544A1 (en) 1995-12-22 1996-12-19 Process for the preparation of polyoxyalkylene polyether polyols having low levels of transition metals, prepared using double metal cyanide complex catalyst

Publications (2)

Publication Number Publication Date
DE69634930D1 DE69634930D1 (de) 2005-08-18
DE69634930T2 true DE69634930T2 (de) 2006-04-20

Family

ID=24310993

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69634930T Expired - Lifetime DE69634930T2 (de) 1995-12-22 1996-12-19 Verfahren zur herstellung von polyoxyalkylenpolyolen, mit einem niedrigen gehalt an übergangsmetallen, die unter verwendung von doppelmetallcyanidkomplexkatalysatoren hergestellt wunden

Country Status (16)

Country Link
US (1) US5767323A (OSRAM)
EP (1) EP0868468B1 (OSRAM)
JP (1) JP4102902B2 (OSRAM)
KR (1) KR100483237B1 (OSRAM)
CN (1) CN1083853C (OSRAM)
AR (1) AR005181A1 (OSRAM)
AU (1) AU715766B2 (OSRAM)
BR (1) BR9612255A (OSRAM)
CZ (1) CZ293882B6 (OSRAM)
DE (1) DE69634930T2 (OSRAM)
ES (1) ES2243955T3 (OSRAM)
MX (1) MX9804568A (OSRAM)
PL (1) PL186302B1 (OSRAM)
RU (1) RU2178426C2 (OSRAM)
TW (1) TW420690B (OSRAM)
WO (1) WO1997023544A1 (OSRAM)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR019107A1 (es) * 1998-04-27 2001-12-26 Dow Global Technologies Inc Polioles de alto peso molecular, proceso para su preparacion y uso de los mismos.
DE19917897A1 (de) * 1999-04-20 2000-10-26 Basf Ag Verfahren zur Herstellung von Polyurethanen
US6376645B1 (en) * 1999-07-09 2002-04-23 The Dow Chemical Company Complexing agent-modified hexacyanometallate hexanitrometallate catalysts
US6423662B1 (en) 1999-07-09 2002-07-23 Dow Global Technologies Inc. Incipient wetness method for making metal-containing cyanide catalysts
DE19937114C2 (de) 1999-08-06 2003-06-18 Bayer Ag Verfahren zur Herstellung von Polyetherpolyolen
DE19949091A1 (de) * 1999-10-12 2001-04-26 Basf Ag Polyester-Polyetherblockcopolymere
DE19960148A1 (de) * 1999-12-14 2001-06-21 Basf Ag Verfahren zur Herstellung von Polyetheralkoholen
DE10008635A1 (de) 2000-02-24 2001-09-06 Basf Ag Verfahren zur Herstellung von Polyetherpolyolen
AU2001252134A1 (en) 2000-02-29 2001-09-12 Basf Aktiengesellschaft Method for producing multimetal cyanide compounds
US6642171B2 (en) 2000-04-28 2003-11-04 Synuthane International, Inc. Double metal cyanide catalysts containing polyglycol ether complexing agents
US6429166B1 (en) 2000-05-19 2002-08-06 Dow Global Technologies Inc. Method for preparing metal cyanide catalyst/polyol initiator slurries
US6635737B1 (en) 2000-05-26 2003-10-21 Williamette Valley Company Polymers derived from low unsaturation polyamines
DE10108484A1 (de) * 2001-02-22 2002-09-05 Bayer Ag Verbessertes Verfahren zur Herstelung von Polyetherpolyolen
DE10108485A1 (de) * 2001-02-22 2002-09-05 Bayer Ag Verbessertes Verfahren zur Herstellung von Polyetherpolyolen
DE10137628A1 (de) * 2001-08-03 2003-02-27 Basf Ag Verfahren zur Herstellung von Polyurethan-Weichschaumstoffen
DE10142747A1 (de) * 2001-08-31 2003-03-20 Bayer Ag Doppelmetallcyanid-Katalysatoren für die Herstellung von Polyetherpolyolen
US20030078311A1 (en) * 2001-10-19 2003-04-24 Ulrich Muller Process for the alkoxylation of organic compounds in the presence of novel framework materials
US6977236B2 (en) * 2002-06-14 2005-12-20 Shell Oil Company Preparation of a double metal cyanide catalyst
US6716788B2 (en) * 2002-06-14 2004-04-06 Shell Oil Company Preparation of a double metal cyanide catalyst
US6835801B2 (en) * 2002-07-19 2004-12-28 Bayer Antwerp, N.V. Activated starter mixtures and the processes related thereto
KR20050107604A (ko) * 2003-03-07 2005-11-14 다우 글로벌 테크놀로지스 인크. 폴리에테르 폴리올을 제조하기 위한 연속식 방법 및 시스템
EP1632517B1 (en) * 2003-06-04 2009-07-22 Asahi Glass Company Ltd. Composite metal cyanide complex catalyst, process for producing the same, and use of the same
JP4273876B2 (ja) * 2003-08-25 2009-06-03 旭硝子株式会社 ポリエーテルモノオールまたはポリエーテルポリオールおよびその製造方法
KR101174170B1 (ko) 2003-10-06 2012-08-14 가부시키가이샤 가네카 점착제 조성물
DE102004013408A1 (de) * 2004-03-18 2005-10-06 Basf Ag Polyetheralkohole und Verfahren zur Herstellung von Polyetheralkoholen zur Polyurethansynthese
JP2007284586A (ja) * 2006-04-18 2007-11-01 Asahi Glass Co Ltd ポリエーテルモノオールの製造方法
US8093351B2 (en) 2006-08-24 2012-01-10 Cornell Research Foundation, Inc. Copolymerization of propylene oxide and carbon dioxide and homopolymerization of propylene oxide
EP2058352B1 (en) * 2006-08-31 2011-11-09 Asahi Glass Company, Limited Method of purifying polyether compound
DE102007057147A1 (de) 2007-11-28 2009-06-04 Evonik Goldschmidt Gmbh Verfahren zur Alkoxylierung mit DMC-Katalysatoren im Schlaufenreaktor mit Strahlsauger
WO2011040418A1 (ja) 2009-09-30 2011-04-07 旭硝子株式会社 イソシアネート基末端プレポリマーの製造方法およびそれにより得られるプレポリマー並びにポリウレタン樹脂
JP5757240B2 (ja) 2009-10-05 2015-07-29 旭硝子株式会社 ポリエーテル類およびその製造方法
DE102009046269A1 (de) 2009-10-30 2011-05-05 Henkel Ag & Co. Kgaa Harnstoffgebundende Alkoxysilane zum Einsatz in Dicht- und Klebstoffen
CN103476824B (zh) * 2011-02-23 2015-06-17 科学与工业研究委员会 制备超支化聚酯的方法
EP2548907A1 (de) * 2011-07-18 2013-01-23 Bayer MaterialScience AG Verfahren zur Herstellung von Polyetherpolyolen
US10358404B2 (en) * 2012-06-21 2019-07-23 Covestro Llc Process for the production of low molecular weight impact polyethers
EP2703425A1 (de) * 2012-08-27 2014-03-05 Bayer MaterialScience AG Verfahren zur Herstellung von Polyethercarbonatpolyolen
US9890100B2 (en) 2013-03-14 2018-02-13 Covestro Llc Continuous process for the production of low molecular weight polyethers with a DMC catalyst
US9051412B2 (en) 2013-03-14 2015-06-09 Bayer Materialscience Llc Base-catalyzed, long chain, active polyethers from short chain DMC-catalyzed starters
US10669368B2 (en) 2013-03-15 2020-06-02 Covestro Llc Method to increase the resistance of double metal cyanide catalysts to deactivation
ES2765225T3 (es) * 2015-08-26 2020-06-08 Covestro Deutschland Ag Procedimiento para la preparación de polioxialquilenpolioles de alto peso molecular
JP2021522382A (ja) 2018-04-25 2021-08-30 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェンHenkel AG & Co. KGaA ヒドロキシル官能化ポリエーテルポリシロキサンブロックコポリマーの調製用プロセス
CN112368317B (zh) 2018-06-19 2024-04-02 汉高股份有限及两合公司 高活性双金属氰化物化合物
ES2985743T3 (es) 2018-12-06 2024-11-07 Henkel Ag & Co Kgaa Preparación de copolímeros en cepillo de polisiloxano-polialquilenglicol
EP3663372B1 (en) 2018-12-06 2024-03-13 Henkel AG & Co. KGaA Curable composition comprising polysiloxane polyalkyleneglycol brush copolymers
EP3932973B1 (en) 2020-07-01 2025-09-03 Henkel AG & Co. KGaA Bi-functionalized polysiloxane brush copolymers
WO2022160078A1 (zh) * 2021-01-26 2022-08-04 万华化学集团股份有限公司 一种用于环氧化物连续聚合的诱导体系、诱导剂以及环氧化物连续聚合的方法
CN116265506B (zh) * 2021-12-16 2024-11-22 长华化学科技股份有限公司 聚醚酯多元醇的制备方法
EP4397691A1 (de) 2023-01-06 2024-07-10 Covestro Deutschland AG Verfahren zur herstellung eines polyoxyalkylenpolyols
EP4480992A1 (en) 2023-06-19 2024-12-25 Henkel AG & Co. KGaA Polyether-polysiloxane gradient copolymers
WO2025202124A1 (en) * 2024-03-26 2025-10-02 Covestro Deutschland Ag Encapsulation material made from a polyurethane foam composition
EP4636000A1 (en) * 2024-04-16 2025-10-22 Covestro Deutschland AG Encapsulation material made from a polyurethane foam composition

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3427256A (en) * 1963-02-14 1969-02-11 Gen Tire & Rubber Co Double metal cyanide complex compounds
US3427334A (en) * 1963-02-14 1969-02-11 Gen Tire & Rubber Co Double metal cyanides complexed with an alcohol aldehyde or ketone to increase catalytic activity
US3393243A (en) * 1964-09-24 1968-07-16 Jefferson Chem Co Inc Process of preparing polyoxypropylene polyether 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
DE2900167C2 (de) * 1979-01-03 1983-02-10 Vsesojuznyj naučno-issledovatel'skij institut sintetičeskich smol, Vladimir Kontinuierliches Verfahren zur Herstellung von Polyäthern
US4239879A (en) * 1979-06-25 1980-12-16 The General Tire & Rubber Company Thermoplastic polyurethane prepared from a poly-1,2-propylene ether glycol, a low molecular weight glycol and 2,4-tolylene diisocyanate
US4282387A (en) * 1979-12-26 1981-08-04 The Dow Chemical Company Process for preparing polyols
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
US4721818A (en) * 1987-03-20 1988-01-26 Atlantic Richfield Company Purification of polyols prepared using double metal cyanide complex catalysts
US5010187A (en) * 1988-11-18 1991-04-23 Dow Chemical Company Production of polyether polyols with reduced unsaturation
US5114619A (en) * 1989-07-14 1992-05-19 The Dow Chemical Company Production of polyether polyols with reduced unsaturation
US4987271A (en) * 1989-02-17 1991-01-22 Asahi Glass Company, Ltd. Method for purifying a polyoxyalkylene alcohol
US5010047A (en) * 1989-02-27 1991-04-23 Arco Chemical Technology, Inc. Recovery of double metal cyanide complex catalyst from a polymer
JP2995568B2 (ja) * 1989-05-09 1999-12-27 旭硝子株式会社 ポリアルキレンオキシド誘導体の製造法
JP2595766B2 (ja) * 1990-05-25 1997-04-02 旭硝子株式会社 ポリオキシアルキレンアルコールの製造方法
JP3025312B2 (ja) * 1990-12-18 2000-03-27 旭硝子株式会社 ポリエーテル類の製造法
US5158922A (en) * 1992-02-04 1992-10-27 Arco Chemical Technology, L.P. Process for preparing metal cyanide complex catalyst
JPH05247199A (ja) * 1992-03-04 1993-09-24 Asahi Glass Co Ltd ポリエーテル類の製造方法
US5248833A (en) * 1992-09-22 1993-09-28 Arco Chemical Technology, L.P. Process for purifying polyols made with double metal cyanide catalysts
JP3357110B2 (ja) * 1993-02-03 2002-12-16 旭硝子株式会社 ポリマー分散ポリオールの製造方法
US5470813A (en) * 1993-11-23 1995-11-28 Arco Chemical Technology, L.P. Double metal cyanide complex catalysts
US5482908A (en) * 1994-09-08 1996-01-09 Arco Chemical Technology, L.P. Highly active double metal cyanide catalysts
US5627122A (en) * 1995-07-24 1997-05-06 Arco Chemical Technology, L.P. Highly active double metal cyanide complex catalysts

Also Published As

Publication number Publication date
US5767323A (en) 1998-06-16
EP0868468A1 (en) 1998-10-07
CN1083853C (zh) 2002-05-01
CZ196598A3 (cs) 1999-01-13
KR19990071642A (ko) 1999-09-27
PL327313A1 (en) 1998-12-07
WO1997023544A1 (en) 1997-07-03
JP4102902B2 (ja) 2008-06-18
ES2243955T3 (es) 2005-12-01
EP0868468B1 (en) 2005-07-13
MX9804568A (es) 1998-09-30
CN1208426A (zh) 1999-02-17
BR9612255A (pt) 1999-07-13
PL186302B1 (pl) 2003-12-31
KR100483237B1 (ko) 2005-11-16
AU1302797A (en) 1997-07-17
AR005181A1 (es) 1999-04-14
CZ293882B6 (cs) 2004-08-18
AU715766B2 (en) 2000-02-10
JP2000513389A (ja) 2000-10-10
RU2178426C2 (ru) 2002-01-20
TW420690B (en) 2001-02-01
DE69634930D1 (de) 2005-08-18

Similar Documents

Publication Publication Date Title
DE69634930T2 (de) Verfahren zur herstellung von polyoxyalkylenpolyolen, mit einem niedrigen gehalt an übergangsmetallen, die unter verwendung von doppelmetallcyanidkomplexkatalysatoren hergestellt wunden
DE69626906T2 (de) Doppelmetallcyanidkatalysatorzusammensetzung enthaltend Polyetherpolyole
DE60027302T2 (de) Polymerisierung von ethylenoxid mit der verwendung von metallcyanidkatalysatoren
DE69705613T2 (de) Hochwirksame doppelmetallcyanidkatalysatoren
DE69804234T3 (de) Direkte polyoxyalkylierung von glyzerin mit doppel-metall-cyanid-katalyse
EP1034035B1 (de) Kristalline doppelmetallcyanid-katalysatoren für die herstellung von polyetherpolyolen
DE69735298T2 (de) Kontinuierliches verfahren zur herstellung von polyoxyalkylenen mit einem niedrigen ungesättigtkeitsgrad, mit der kontinuierlichen zugabe von initiator
DE102005011581A1 (de) Verfahren zur Herstellung von DMC-Katalysatoren
EP1071509A1 (de) Verbesserte doppelmetallcyanid-katalysatoren für die herstellung von polyetherpolyolen
EP1259561A1 (de) Verfahren zur herstellung von multimetallcyanidverbindungen
EP1542954B1 (de) Herstellung von alkanolalkoxylaten bei optimierten reaktionstemperaturen
EP2726534B1 (de) Verfahren zur herstellung von hochmolekularen polyetherpolyolen
EP1517940B1 (de) verfahren zu herstellung von dmc-katalysatoren
EP4093539B1 (de) Verfahren zur herstellung von doppelmetallcyanid-katalysatoren
EP1448664B1 (de) Verfahren zur herstellung von polyetheralkoholen
EP3870619B1 (de) Verfahren zur herstellung von polyoxymethylen-polyoxyalkylen-blockcopolymeren
WO2000074843A1 (de) Suspensionen von plättchenförmigen multimetallcyanidverbindungen, deren herstellung und deren verwendung zur herstellung von polyetheralkoholen
EP1370600A1 (de) Verfahren zur aufarbeitung von polyetheralkoholen
DE60301815T2 (de) Doppelmetallcyanid-Katalysatoren für die Herstellung von Polyetherpolyolen
EP4077435A1 (de) Verfahren zur herstellung von polyoxymethylen-polyoxyalkylen-copolymeren
WO2010072769A1 (de) Verfahren zur herstellung von polyether-blockcopolymeren
DE10226415A1 (de) Verfahren zur Herstellung von Polyetheralkoholen
DE10210125A1 (de) Verfahren zur Herstellung von hochfunktionellen Polyetheralkoholen
EP4551328A2 (de) Verfahren zur herstellung von doppelmetallcyanid-katalysatoren

Legal Events

Date Code Title Description
8363 Opposition against the patent