WO2014102310A3 - Method for purifying a recycle stream from a system for producing polyarylene ether sulfones - Google Patents

Method for purifying a recycle stream from a system for producing polyarylene ether sulfones Download PDF

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Publication number
WO2014102310A3
WO2014102310A3 PCT/EP2013/078029 EP2013078029W WO2014102310A3 WO 2014102310 A3 WO2014102310 A3 WO 2014102310A3 EP 2013078029 W EP2013078029 W EP 2013078029W WO 2014102310 A3 WO2014102310 A3 WO 2014102310A3
Authority
WO
WIPO (PCT)
Prior art keywords
alkyl
stream
weight
pyrrolidone
dividing wall
Prior art date
Application number
PCT/EP2013/078029
Other languages
German (de)
French (fr)
Other versions
WO2014102310A2 (en
Inventor
Christoph Sigwart
Cornelis Hendricus DE RUITER
Jutta VONEND
Jörg Erbes
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 WO2014102310A2 publication Critical patent/WO2014102310A2/en
Publication of WO2014102310A3 publication Critical patent/WO2014102310A3/en

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Classifications

    • 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
    • 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
    • C08G85/00—General processes for preparing compounds provided for in this subclass
    • C08G85/002—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
    • C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
    • C08J2381/06—Polysulfones; Polyethersulfones

Landscapes

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

Abstract

Proposed is a method for purifying a recycle stream (1) from a system for producing polyarylene ether sulfones by the polycondensation of aromatic bis-halogen compounds and aromatic bisphenols or salts thereof in the presence of at least one alkali metal- or ammonium carbonate or -hydrogen carbonate in an N-alkyl-2-pyrrolidone as a solvent, containing - 60 to 90% by weight water, - 10 to 40% by weight N-alkyl-2-pyrrolidone and, as a specification-detrimental impurity, up to 5000 ppm by weight of the alkyl succinimide corresponding to the N-alkyl-2-pyrrolidone and, in addition, up to 1000 ppm by weight additional high boilers relative to N-alkyl-2-pyrrolidone, in particular inorganic salts, each relative to the total weight of the recycle stream (1), the sum of the components being 100% by weight, to obtain a pure N-alkyl-2-pyrrolidone stream (2) that can be fed back into the system for producing polyarylene ether sulfones by purification by distillation which is characterized in that the purification by distillation is carried out in a dividing wall column (TK) that has a dividing wall (T) which is arranged in the longitudinal direction of the column and which divides the inner space of the dividing wall column (TK) into a supply region (A), a discharge region (B), an upper common column region (C) and a lower common column region (D), the recycle stream (1) being fed to the supply region (A) of said dividing wall column and divided in the dividing wall column (TK) into a bottom stream (7) containing N-methyl succinimide, a top stream (8) containing water and a pure NMP stream as a side stream (2) from the discharge region (B).
PCT/EP2013/078029 2012-12-28 2013-12-27 Method for purifying a recycle stream from a system for producing polyarylene ether sulfones WO2014102310A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12199613 2012-12-28
EP12199613.6 2012-12-28

Publications (2)

Publication Number Publication Date
WO2014102310A2 WO2014102310A2 (en) 2014-07-03
WO2014102310A3 true WO2014102310A3 (en) 2014-09-04

Family

ID=47559201

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/078029 WO2014102310A2 (en) 2012-12-28 2013-12-27 Method for purifying a recycle stream from a system for producing polyarylene ether sulfones

Country Status (1)

Country Link
WO (1) WO2014102310A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108546243A (en) * 2018-07-17 2018-09-18 天津中福环保科技股份有限公司 A kind of lithium battery production double tower NMP recycling purification systems and its recycling method of purification
CN114432728B (en) * 2022-04-11 2022-06-21 天津中福环保科技股份有限公司 System and process for purifying NMP

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289548A (en) * 2007-04-16 2008-10-22 常熟市贝斯特皮革有限公司 Novel method for recovering solvent for polymerization of poly(p-phenytene terephthalamide)
JP2010083780A (en) * 2008-09-30 2010-04-15 Toray Ind Inc Method for separatively recovering high-boiling component having boiling point of 200°c or higher, and manufacturing method of polyarylene sulfide
CN102276838A (en) * 2011-06-15 2011-12-14 南京大学 Separation and recovery method for n-methylpyrrolidone (NMP) and lithium chloride catalyst during polyphenylene sulfide producing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101289548A (en) * 2007-04-16 2008-10-22 常熟市贝斯特皮革有限公司 Novel method for recovering solvent for polymerization of poly(p-phenytene terephthalamide)
JP2010083780A (en) * 2008-09-30 2010-04-15 Toray Ind Inc Method for separatively recovering high-boiling component having boiling point of 200°c or higher, and manufacturing method of polyarylene sulfide
CN102276838A (en) * 2011-06-15 2011-12-14 南京大学 Separation and recovery method for n-methylpyrrolidone (NMP) and lithium chloride catalyst during polyphenylene sulfide producing

Also Published As

Publication number Publication date
WO2014102310A2 (en) 2014-07-03

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