ES2041751T3 - Procedimiento para la concentracion de la distribucion del peso molecular de politetrahidrofurano y de copolimeros, constituidos por tetrahidrofurano y oxidos de alquileno. - Google Patents

Procedimiento para la concentracion de la distribucion del peso molecular de politetrahidrofurano y de copolimeros, constituidos por tetrahidrofurano y oxidos de alquileno.

Info

Publication number
ES2041751T3
ES2041751T3 ES198888113661T ES88113661T ES2041751T3 ES 2041751 T3 ES2041751 T3 ES 2041751T3 ES 198888113661 T ES198888113661 T ES 198888113661T ES 88113661 T ES88113661 T ES 88113661T ES 2041751 T3 ES2041751 T3 ES 2041751T3
Authority
ES
Spain
Prior art keywords
distribution
molecular weight
politetrahidrofurano
tetrahidrofurano
copolimeros
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
ES198888113661T
Other languages
English (en)
Inventor
Herbert Dr. Mueller
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Application granted granted Critical
Publication of ES2041751T3 publication Critical patent/ES2041751T3/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
    • C08G65/04—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 only
    • C08G65/06—Cyclic ethers having no atoms other than carbon and hydrogen outside the ring
    • C08G65/16—Cyclic ethers having four or more ring atoms
    • C08G65/20—Tetrahydrofuran
    • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PROCESO DE LIMITACION DE LA DISTRIBUCION DEL PESO MOLECULAR DE POLITETRAHIDROFURANO Y COPOLIMERIZADOS DE TETRAHIDROFURANO Y ALQUILENOXIDOS, EN EL QUE SE DESTILAN DE LOS POLIMERIZADOS PARTES BAJOMOLECULARES MEDIANTE PRESIONES MENORES DE 0.3 MBAR Y TEMPERATURAS DE 200 A 260 (GRADOS) C, MEZCLANDO EL RESTO DE LA DESTILACION CON UNA MEZCLA DISOLVENTE DE (A) UN ALCANOL, (B) UN HIDROCARBURO Y (C) AGUA, DONDE EL CONTENIDO DE LOS COMPONENTES A, B Y C EN LA MEZCLA ESTA ENTRE LOS VALORES 4 A 60% DEL PESO, SEPARANDO A CONTINUACION LAS FASES DE FORMACION Y AISLANDO DE LAS FASES EL POLIMERIZADO CON UNA DISTRIBUCION DE PESO MOLECULAR MAS LIMITADA.
ES198888113661T 1987-08-27 1988-08-23 Procedimiento para la concentracion de la distribucion del peso molecular de politetrahidrofurano y de copolimeros, constituidos por tetrahidrofurano y oxidos de alquileno. Expired - Lifetime ES2041751T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873728613 DE3728613A1 (de) 1987-08-27 1987-08-27 Verfahren zur einengung der molekulargewichtsverteilung von polytetrahydrofuran und von copolymerisaten aus tetrahydrofuran und alkylenoxiden

Publications (1)

Publication Number Publication Date
ES2041751T3 true ES2041751T3 (es) 1993-12-01

Family

ID=6334620

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888113661T Expired - Lifetime ES2041751T3 (es) 1987-08-27 1988-08-23 Procedimiento para la concentracion de la distribucion del peso molecular de politetrahidrofurano y de copolimeros, constituidos por tetrahidrofurano y oxidos de alquileno.

Country Status (6)

Country Link
US (1) US4933503A (es)
EP (1) EP0305853B1 (es)
JP (1) JPH0192221A (es)
KR (1) KR890003833A (es)
DE (2) DE3728613A1 (es)
ES (1) ES2041751T3 (es)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3933333A1 (de) * 1989-10-06 1991-04-11 Basf Ag Verfahren zur reinigung von polyalkylenetherglykolen, die heteropolysaeuren enthalten
US5208385A (en) * 1992-02-19 1993-05-04 Arco Chemical Technology, L.P. Preparation of tetrahydrofuran polymers having a narrow molecular weight distribution using an amorphous silica-alumina catalyst
US5282929A (en) * 1992-03-06 1994-02-01 E. I. Du Pont De Nemours And Company Reducing molecular weight distribution of polyether glycols by short-path distillation
US5210283A (en) * 1992-05-18 1993-05-11 Arco Chemical Technology, L.P. Synthesis of tetrahydrofuran polymers using calcined silica-alumina or beaching earth catalysts
US5298670A (en) * 1993-04-02 1994-03-29 Industrial Technology Research Institute Method of controlling molecular weight distribution of polytetramethylene ether glycol
US5434315A (en) * 1994-02-22 1995-07-18 E. I. Du Pont De Nemours And Company Reducing molecular weight polydispersity of polyether glycols by membrane fractionation
DE19706331A1 (de) * 1997-02-19 1998-08-20 Mueller Herbert Dr Verfahren zur Gewinnung von Polytetramethylenetherglykolen mit enger Molmassenverteilung
DE19740234B4 (de) * 1997-09-12 2008-07-10 3M Espe Ag Verwendung von Dentalmassen auf Polyetherbasis zur Abformung im zahnmedizinischen oder zahntechnischen Bereich
DE10032264A1 (de) * 2000-07-03 2002-01-17 Basf Ag Verbessertes Verfahren zur Herstellung von Polyetrahydrofuran und THF-Copolymeren
DE10032266A1 (de) 2000-07-03 2002-01-17 Basf Ag Verbessertes Verfahren zur einstufigen Herstellung von Polytetrahydrofuran und Tetrahydrofuran-Copolymeren
US6355846B1 (en) 2000-10-17 2002-03-12 E. I. Du Pont De Nemours And Company Narrowing of poly (tetramethylene ether) glycol
US7409494B2 (en) * 2004-04-30 2008-08-05 Network Appliance, Inc. Extension of write anywhere file system layout
WO2010060957A1 (de) * 2008-11-27 2010-06-03 Basf Se Vorrichtung zur destillativen auftrennung
US8609805B2 (en) 2009-04-15 2013-12-17 Invista North America S.A R.L. Copolyether glycol manufacturing process
US20100267905A1 (en) * 2009-04-15 2010-10-21 Invista North America S.A R.L. Copolyether glycol manufacturing process
JP2015120872A (ja) 2013-11-21 2015-07-02 株式会社リコー ポリマーの製造方法
WO2016080501A1 (ja) 2014-11-20 2016-05-26 三菱化学株式会社 ポリエーテルポリオール、ポリエーテルポリオールの製造方法、ポリエステルエラストマー及びポリウレタン

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3359332A (en) * 1963-07-25 1967-12-19 Monsanto Co Preparation of polyoxytetra-methylene glycol
FR1506291A (fr) * 1966-03-04 1967-12-22 Inst Francais Du Petrole Procédé de séparation de polyépoxydes solubles à partir de leurs solutions dans les hydrocarbures
US3478109A (en) * 1967-07-28 1969-11-11 Eastman Kodak Co Solvent extraction of polymeric glycols using methanol
US4251654A (en) * 1979-08-14 1981-02-17 E. I. Du Pont De Nemours And Company Copolyether glycols of tetrahydrofuran and alkylene oxides having low oligomeric cyclic ether content
US4478109A (en) * 1981-09-28 1984-10-23 Jacob Kobelt Twin lever control assembly
US4500705A (en) * 1984-01-09 1985-02-19 E. I. Du Pont De Nemours And Company Method for reducing oligomeric cyclic ether content of a polymerizate
DE3407183A1 (de) * 1984-02-28 1985-08-29 Basf Ag, 6700 Ludwigshafen Verfahren zur verminderung des gehaltes an oligomeren cyclischen ethern in polyoxibutylen-polyoxialkylenglykolen
US4510333A (en) * 1984-06-05 1985-04-09 E. I. Du Pont De Nemours And Company Method for preparing poly(tetramethylene ether) glycol having narrow molecular weight distribution
US4585592A (en) * 1985-02-28 1986-04-29 Basf Aktiengesellschaft Reducing the content of oligomeric cyclic ethers in polyoxybutylene polyoxyalkylene glycols
DE3607946A1 (de) * 1986-03-11 1987-09-17 Basf Ag Verfahren zur einengung der molekulargewichtsverteilung von polytetrahydrofuran und von copolymerisaten aus tetrahydrofuran und alkylenoxiden

Also Published As

Publication number Publication date
EP0305853A2 (de) 1989-03-08
US4933503A (en) 1990-06-12
DE3880053D1 (de) 1993-05-13
EP0305853A3 (en) 1989-06-14
KR890003833A (ko) 1989-04-18
JPH0192221A (ja) 1989-04-11
DE3728613A1 (de) 1989-03-09
EP0305853B1 (de) 1993-04-07

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