WO2014102308A3 - 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 PDFInfo
- Publication number
- WO2014102308A3 WO2014102308A3 PCT/EP2013/078027 EP2013078027W WO2014102308A3 WO 2014102308 A3 WO2014102308 A3 WO 2014102308A3 EP 2013078027 W EP2013078027 W EP 2013078027W WO 2014102308 A3 WO2014102308 A3 WO 2014102308A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alkyl
- weight
- pyrrolidone
- stream
- purification
- Prior art date
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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/20—Polysulfones
- C08G75/23—Polyethersulfones
-
- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0286—Chemical after-treatment
-
- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0277—Post-polymerisation treatment
- C08G75/0281—Recovery or purification
-
- 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)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Porposed 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 purified N-alkyl-2-pyrrolidone stream (2) that can be fed back into the system for producing polyarylene ether sulfones by purification by distillation in a purification column (K) which is characterized in that a prepurification step by evaporation in one or more evaporator stages is provided upstream of the purification by distillation in order to reduce the content of inorganic salts, wherein one or more vapor streams (3, 4, 5) are obtained which are fed to the purification column (K) as feed streams, and wherein the bottom stream is discharged from the last evaporator stage and the bottom stream from the purification column (K) is partially or entirely fed to an additional column (ZK) and is divided therein into a bottom stream (11) that is discharged and a top stream (12) that is recycled into the purification column (K).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12199609 | 2012-12-28 | ||
| EP12199609.4 | 2012-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2014102308A2 WO2014102308A2 (en) | 2014-07-03 |
| WO2014102308A3 true WO2014102308A3 (en) | 2014-09-04 |
Family
ID=47559199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/078027 WO2014102308A2 (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) | WO2014102308A2 (en) |
Citations (3)
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1246295A (en) | 1982-12-23 | 1988-12-06 | Robert A. Clendinning | Aromatic amorphous thermoplastic terpolymers |
| DE3330154A1 (en) | 1983-08-20 | 1985-03-07 | Basf Ag, 6700 Ludwigshafen | METHOD FOR PRODUCING POLYETHERS |
| EP0297363A3 (en) | 1987-06-27 | 1989-09-13 | BASF Aktiengesellschaft | High temperature resistant thermoplastic moulding masses with improved melt stability |
| US4870153A (en) | 1987-10-22 | 1989-09-26 | Amoco Corporation | Novel poly(aryl ether) polymers |
-
2013
- 2013-12-27 WO PCT/EP2013/078027 patent/WO2014102308A2/en active Application Filing
Patent Citations (3)
| 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 |
|---|---|
| WO2014102308A2 (en) | 2014-07-03 |
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