EP0885252A2 - Procede de retraitement de residus contenant des composes dihydroxy - Google Patents

Procede de retraitement de residus contenant des composes dihydroxy

Info

Publication number
EP0885252A2
EP0885252A2 EP97906160A EP97906160A EP0885252A2 EP 0885252 A2 EP0885252 A2 EP 0885252A2 EP 97906160 A EP97906160 A EP 97906160A EP 97906160 A EP97906160 A EP 97906160A EP 0885252 A2 EP0885252 A2 EP 0885252A2
Authority
EP
European Patent Office
Prior art keywords
column
vapors
stage
bottom product
dihydroxy compound
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.)
Withdrawn
Application number
EP97906160A
Other languages
German (de)
English (en)
Inventor
Peter Braune
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
Publication of EP0885252A2 publication Critical patent/EP0885252A2/fr
Withdrawn legal-status Critical Current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
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/78—Preparation processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
    • C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
    • C07C29/88—Separation; Purification; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification of at least one compound
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/18—Polyhydroxylic acyclic alcohols
    • C07C31/20—Dihydroxylic alcohols
    • C07C31/207—1,4-Butanediol; 1,3-Butanediol; 1,2-Butanediol; 2,3-Butanediol
    • 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
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/88—Post-polymerisation treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/02—Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers

Definitions

  • terephthalic acid and 1,4-butanediol (the latter in 5 150 to 220 mol%, preferably 70 to 100 mol% excess) in a manner known per se at temperatures in the range from 150 to 220 ° C., and pressures in the range from 0.7 to 2.0 bar for a period of from 150 to 300, preferably from 200 to 280 minutes, reacted with one another, an esterification taking place and ent
  • the low-boiling components consist essentially of water or methanol with acetaldehyde; in the production of PBT based on methyl terephthalate from methanol and THF. Then the bottom product, which predominantly contains the excess dihydroxy compounds, is returned to stage (1).
  • columns A to C can be divided into several columns Ai, A 2 to A n or B 1 ( B 2 to B n and Ci, C 2 to C n .
  • the workup is carried out separately and the vapors (b) are transferred to a column B.
  • the dihydroxy compound is then returned from column C to the esterification (stage 1).
  • the bottom product is discharged from column C into an evaporation device D and the dihydroxy compound is separated off and returned to column C and the remaining residue is discharged from D.
  • the processing variants are 1.1. until 1.5. was carried out as follows:

Landscapes

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

Abstract

L'invention concerne un procédé de retraitement de résidus qui contiennent des composés dihydroxy et sont obtenus lors de la production de polyesters. Selon ce procédé, (1) dans une première étape, un acide dicarboxylique ou ses esters ou dérivés formant des esters avec un excédent molaire d'un composé hydroxy sont estérifiés ou transestérifiés; (2) dans au moins une deuxième étape, le produit d'estérification obtenu selon (1) est polycondensé; et (3) les vapeurs (a) et (b) produites selon (1) et (2) sont soumises à un traitement pour récupérer les substances initiales. Ce procédé est caractérisé en ce que le traitement en vue de récupérer les substances initiales s'effectue en présence d'un composé alcalin ou alcalino-terreux en une quantité comprise entre 0,5 et 10 % en poids, exprimée sous forme de métal alcalin ou de métal alcalino-terreux, par rapport à la teneur en solides des vapeurs.
EP97906160A 1996-03-06 1997-03-04 Procede de retraitement de residus contenant des composes dihydroxy Withdrawn EP0885252A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19608614A DE19608614A1 (de) 1996-03-06 1996-03-06 Verfahren zur Aufarbeitung von Dihydroxyverbindungen enthaltenden Rückständen
DE19608614 1996-03-06
PCT/EP1997/001081 WO1997032915A2 (fr) 1996-03-06 1997-03-04 Procede de retraitement de residus contenant des composes dihydroxy

Publications (1)

Publication Number Publication Date
EP0885252A2 true EP0885252A2 (fr) 1998-12-23

Family

ID=7787365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97906160A Withdrawn EP0885252A2 (fr) 1996-03-06 1997-03-04 Procede de retraitement de residus contenant des composes dihydroxy

Country Status (8)

Country Link
US (1) US6174970B1 (fr)
EP (1) EP0885252A2 (fr)
JP (1) JP2000506203A (fr)
KR (1) KR19990087569A (fr)
CN (1) CN1140561C (fr)
AU (1) AU2095197A (fr)
DE (1) DE19608614A1 (fr)
WO (1) WO1997032915A2 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6245879B1 (en) * 1999-01-29 2001-06-12 Shell Oil Company Purification of 1,3-propanediol in carbonyl-containing stream
DE19929791A1 (de) * 1999-06-29 2001-02-01 Basf Ag Verfahren zur kontinuierlichen Herstellung von Polybutylenterephthalat aus Terephthalsäure und Butandiol
US6576774B2 (en) * 2000-07-20 2003-06-10 Shell Oil Company Process for recycling polytrimethylene terephthalate cyclic dimer
US6906164B2 (en) * 2000-12-07 2005-06-14 Eastman Chemical Company Polyester process using a pipe reactor
JP4177103B2 (ja) * 2000-12-07 2008-11-05 イーストマン ケミカル カンパニー 管型反応器を使用する低コストポリエステルの製造方法
DE10125677B4 (de) * 2001-05-25 2013-05-16 Lurgi Zimmer Gmbh Verfahren und Vorrichtung zur Herstellung von Polytrimethylenterephthalat
DE10125678B4 (de) * 2001-05-25 2011-04-14 Lurgi Zimmer Gmbh Verfahren und Vorrichtung zur Herstellung von Polyethylenterephthalat
US7264847B2 (en) * 2003-02-19 2007-09-04 Robert P. Bentley, Sr. Lower alkyl carboxylic acid moieties for preventing oxidative corrosion of metals and organoleptic stabilizer for food and beverages
US7135541B2 (en) 2003-06-06 2006-11-14 Eastman Chemical Company Polyester process using a pipe reactor
US7074879B2 (en) * 2003-06-06 2006-07-11 Eastman Chemical Company Polyester process using a pipe reactor
US7332548B2 (en) * 2004-03-04 2008-02-19 Eastman Chemical Company Process for production of a polyester product from alkylene oxide and carboxylic acid
US7943094B2 (en) * 2006-12-07 2011-05-17 Grupo Petrotemex, S.A. De C.V. Polyester production system employing horizontally elongated esterification vessel
US7649109B2 (en) * 2006-12-07 2010-01-19 Eastman Chemical Company Polyester production system employing recirculation of hot alcohol to esterification zone
US20080139780A1 (en) * 2006-12-07 2008-06-12 Debruin Bruce Roger Polyester production system employing short residence time esterification
US7863477B2 (en) * 2007-03-08 2011-01-04 Eastman Chemical Company Polyester production system employing hot paste to esterification zone
US7872090B2 (en) * 2007-07-12 2011-01-18 Eastman Chemical Company Reactor system with optimized heating and phase separation
US7868130B2 (en) * 2007-07-12 2011-01-11 Eastman Chemical Company Multi-level tubular reactor with vertically spaced segments
US7858730B2 (en) 2007-07-12 2010-12-28 Eastman Chemical Company Multi-level tubular reactor with dual headers
US7847053B2 (en) * 2007-07-12 2010-12-07 Eastman Chemical Company Multi-level tubular reactor with oppositely extending segments
US7829653B2 (en) * 2007-07-12 2010-11-09 Eastman Chemical Company Horizontal trayed reactor
US7868129B2 (en) * 2007-07-12 2011-01-11 Eastman Chemical Company Sloped tubular reactor with spaced sequential trays
US7872089B2 (en) 2007-07-12 2011-01-18 Eastman Chemical Company Multi-level tubular reactor with internal tray
US7842777B2 (en) * 2007-07-12 2010-11-30 Eastman Chemical Company Sloped tubular reactor with divided flow
KR102306544B1 (ko) * 2017-09-07 2021-09-30 주식회사 엘지화학 에스터화 반응에서의 1가 알코올의 제거 방법 및 이를 포함하는 에스터 조성물의 제조 방법
KR102138788B1 (ko) * 2017-09-07 2020-07-28 주식회사 엘지화학 에스터 조성물의 제조 시스템 및 이를 이용한 에스터 조성물의 제조 방법

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852164A (en) * 1973-03-30 1974-12-03 S Chow Purification of 1,4-butanediol by vacuum distillation with side stream recovery
DE2514116C3 (de) * 1975-03-29 1983-03-17 Basf Ag, 6700 Ludwigshafen Verfahren zur kontinuierlichen Herstellung von linearen, hochmolekularen Polybutylenterephthalaten
DE2728407A1 (de) * 1977-06-24 1979-01-04 Basf Ag Verfahren zur behandlung von butandiol, das als kondensat bei der herstellung von polybutylenterephthalaten erhalten wurde
DE4333929A1 (de) * 1993-10-05 1995-04-06 Basf Ag Verfahren zur Aufarbeitung von Dihydroxyverbindungen enthaltenden Rückständen
US5561218A (en) * 1993-10-05 1996-10-01 Basf Aktiengesellschaft Working up residues containing dihydroxy compounds
DE19509957A1 (de) * 1995-03-18 1996-09-19 Basf Ag Verfahren zur Aufarbeitung von Dihydroxyverbindungen enthaltenden Rückständen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9732915A2 *

Also Published As

Publication number Publication date
WO1997032915A2 (fr) 1997-09-12
WO1997032915A3 (fr) 1997-10-30
JP2000506203A (ja) 2000-05-23
AU2095197A (en) 1997-09-22
KR19990087569A (ko) 1999-12-27
US6174970B1 (en) 2001-01-16
CN1140561C (zh) 2004-03-03
CN1212712A (zh) 1999-03-31
DE19608614A1 (de) 1997-09-11

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