ES2118578T3 - Metodo para extraer el catalizador de transesterificacion de polioles de polieter. - Google Patents

Metodo para extraer el catalizador de transesterificacion de polioles de polieter.

Info

Publication number
ES2118578T3
ES2118578T3 ES95910928T ES95910928T ES2118578T3 ES 2118578 T3 ES2118578 T3 ES 2118578T3 ES 95910928 T ES95910928 T ES 95910928T ES 95910928 T ES95910928 T ES 95910928T ES 2118578 T3 ES2118578 T3 ES 2118578T3
Authority
ES
Spain
Prior art keywords
transesterification catalyst
magnesic
sulphite
sulphate
polyeter
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
ES95910928T
Other languages
English (en)
Inventor
Suriyanarayanan Dorai
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of ES2118578T3 publication Critical patent/ES2118578T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyethers (AREA)

Abstract

UN METODO MEJORADO PARA RECUPERAR GLICOL DE POLI(ETER DE TETRAMETILENO) PURIFICADO O POLIOL DE POLIETER SIMILAR A PARTIR DE UNA DISOLUCION ACUOSA DE UN POLIMERO QUE CONTIENE UN RESIDUO CATALIZADOR METALICO ALCALINO QUE IMPLICA LA ADICION DE UN EXCESO ESTEQUIOMETRICO DE SULFATO O SULFITO MAGNESICO SEGUIDO DE LA EVAPORACION DE AGUA Y LA SEPARACION DEL POLIMERO FUNDIDO A PARTIR DE LA FASE SOLIDA PRECIPITADA (P. EJ. A PARTIR DE HIDROXIDO MAGNESICO, SULFATO/SULFITO METALICO ALCALINO, Y EXCESO DE SULFATO/SULFITO MAGNESICO). TAL PROCESO TIENE COMO RESULTADO ESENCIALMENTE LA ELIMINACION COMPLETA DE CUALQUIER CATALIZADOR DE TRANSESTERIFICACION BASICO Y AGUA SIN UNA PERDIDA SIGNIFICATIVA DE GLICOL DE POLI(ETER DE TETRAMETILENO).
ES95910928T 1994-02-17 1995-02-14 Metodo para extraer el catalizador de transesterificacion de polioles de polieter. Expired - Lifetime ES2118578T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/198,172 US5410093A (en) 1994-02-17 1994-02-17 Method for removing transesterification catalyst from polyether polyols

Publications (1)

Publication Number Publication Date
ES2118578T3 true ES2118578T3 (es) 1998-09-16

Family

ID=22732289

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95910928T Expired - Lifetime ES2118578T3 (es) 1994-02-17 1995-02-14 Metodo para extraer el catalizador de transesterificacion de polioles de polieter.

Country Status (8)

Country Link
US (1) US5410093A (es)
EP (1) EP0745101B1 (es)
JP (1) JP3560248B2 (es)
KR (1) KR100329136B1 (es)
AU (1) AU1871695A (es)
DE (1) DE69503476T2 (es)
ES (1) ES2118578T3 (es)
WO (1) WO1995022573A1 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9498604B2 (en) 1997-11-12 2016-11-22 Genesis Technologies Llc Medical device and method
DE19758296A1 (de) * 1997-12-31 1999-07-01 Basf Ag Herstellung von Polytetrahydrofuran mit endständigen Hydroxylgruppen unter Verwendung von Ionenaustauschern
US6454775B1 (en) 1999-12-06 2002-09-24 Bacchus Vascular Inc. Systems and methods for clot disruption and retrieval
US6929633B2 (en) 2000-01-25 2005-08-16 Bacchus Vascular, Inc. Apparatus and methods for clot dissolution
US6663613B1 (en) * 2000-01-25 2003-12-16 Bacchus Vascular, Inc. System and methods for clot dissolution
WO2004100772A2 (en) * 2003-05-12 2004-11-25 University Of Florida Devices and methods for disruption and removal of luninal occlusions
US9561094B2 (en) 2010-07-23 2017-02-07 Nfinium Vascular Technologies, Llc Devices and methods for treating venous diseases
CN102887995B (zh) 2011-07-19 2016-08-03 因温斯特技术公司 聚醚多元醇过滤中的改进的产物回收方法
CN102887996B (zh) * 2011-07-19 2016-03-16 因温斯特技术公司 聚醚多元醇过滤中的聚合物回收方法
KR20140117590A (ko) 2012-01-26 2014-10-07 인비스타 테크놀러지스 에스.에이 알.엘. 개선된 가알칸올분해 프로세스
WO2015187196A1 (en) 2014-06-04 2015-12-10 Nfinium Vascular Technologies, Llc Low radial force vascular device and method of occlusion
CN109575268A (zh) 2018-11-02 2019-04-05 佳化化学（滨州）有限公司 一种聚醚多元醇的精制方法及精制装置
CN113429555B (zh) * 2021-07-20 2022-07-05 佛山市中天融新材料科技有限公司 聚碳酸酯二元醇及其制备方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB958390A (en) * 1961-07-11 1964-05-21 Ici Ltd Purification and stabilisation of polyethers
BE795455A (fr) * 1972-02-24 1973-08-16 Basf Ag Procede de preparation de polyalkylene-ethers purs
US4137396A (en) * 1976-09-24 1979-01-30 Basf Wyandotte Corporation Filtration process for purifying polyols
JPS5770124A (en) * 1980-10-20 1982-04-30 Dai Ichi Kogyo Seiyaku Co Ltd Purification of polyether-polyol
US4371713A (en) * 1980-11-04 1983-02-01 Japan Synthetic Rubber Co., Ltd. Process for the preparation of polyether glycol
DE3107449A1 (de) * 1981-02-27 1982-09-16 Basf Ag, 6700 Ludwigshafen Verfahren zur reinigung von polytetramethylenetherglykolen
US4584414A (en) * 1984-12-21 1986-04-22 E. I. Du Pont De Nemours And Company Process for preparing improved poly(tetramethylene ether) glycol by alcoholysis
JPS6220970A (ja) * 1985-07-18 1987-01-29 Japan Steel Works Ltd:The 圧力容器ドアロツク機構の安全装置
US4985551A (en) * 1988-12-29 1991-01-15 Basf Corporation Process for purification of catalysts from polyols using ion exchange resins

Also Published As

Publication number Publication date
AU1871695A (en) 1995-09-04
WO1995022573A1 (en) 1995-08-24
KR100329136B1 (ko) 2002-11-23
EP0745101A1 (en) 1996-12-04
JP3560248B2 (ja) 2004-09-02
DE69503476D1 (de) 1998-08-20
EP0745101B1 (en) 1998-07-15
US5410093A (en) 1995-04-25
JPH09509211A (ja) 1997-09-16
DE69503476T2 (de) 1999-02-18

Similar Documents

Publication Publication Date Title
ES2118578T3 (es) Metodo para extraer el catalizador de transesterificacion de polioles de polieter.
ES2176137T1 (es) Metodo para recuperar acidos alcanoicos fluorados de aguas residuales.
ES2103385T3 (es) Procedimiento para la recuperacion de polimeros disueltos en medio acuoso alcalino o acido.
ATE323732T1 (de) Verfahren zur herstellung von polyarylensulfiden
BR0002293A (pt) Processo para recuperação de dióxido de carbono de uma corrente gasosa, e, aparelhagem para limpeza de dióxido de carbono
PT1133347E (pt) Metodo e aparelho para remocao de substancias flutuantes e sais de um liquido por meio de uma filtracao por membrana
CO4440443A1 (es) Extraccion de cobre hidrometalurgico con el uso de cloruro
BR0009218A (pt) Processo de purificação de água
ATE189969T1 (de) Verfahren zur kohlendioxidabreinigung aus gasgemischen
PT975645E (pt) Separacao de solidos de lenhina e lixivia negra
JPS5731929A (en) Manufacture of polyallylene polyether and novel polyallylene polyether
DK0477284T3 (da) Fremgangsmåder til udvinding af naturligt produceret chymosin
ZA200004500B (en) Method for reprocessing waste acid resulting from TiO2 production.
ATE29874T1 (de) Verfahren zur herstellung von dihydroxybenzolen.
EP0926183A3 (en) A process for the removal of alkalinity in the manufacture of polyether polyols and the reuse of this alkalinity in the manufacture of polyether polyols
AR001872A1 (es) Método y aparato para recuperar fibras utiles a partir de corrientes efluentes de una planta papelera
DK0973715T3 (da) Fremgangsmåde til genvinding af terephthalsyre og ethylenglycol fra polyethylenterephthalataffald
BR8504745A (pt) Processo ciclico para a producao de uma solucao alcalina de carbamato de celulose,para a precipitacao do carbamato de celulose da solucao alcalina e para a recuperacao e reciclagem dos produtos quimicos
DK0950684T3 (da) Fremgangsmåde til oparbejdning af siliconeharpiksholdigt polyamidmateriale
ATE191492T1 (de) Verfahren zur herstellung von celluloseformkörpern und die mit diesem verfahren hergestellten formkörper sowie deren verwendung
GB2001991A (en) Preparation of polyglycidyl ethers of polyhydric phenols
ES2104508B1 (es) Procedimiento para el tratamiento hidrometalurgico de depuracion de oxido waelz mediante su lixiviacion con carbonato sodico.
ES2164955T3 (es) Procedimiento para la obtencion de dioxido de circonio pulverulento.
DK0487479T3 (da) Fremgangsmåde til rensning af jernoxid
BR9913709A (pt) Processo para o reprocessamento, respectivamente, purificação de soluções aquosas de um óxido de amina terciária

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 745101

Country of ref document: ES