JPS55141450A - Recovery of n-alkylamides - Google Patents

Recovery of n-alkylamides

Info

Publication number
JPS55141450A
JPS55141450A JP4971179A JP4971179A JPS55141450A JP S55141450 A JPS55141450 A JP S55141450A JP 4971179 A JP4971179 A JP 4971179A JP 4971179 A JP4971179 A JP 4971179A JP S55141450 A JPS55141450 A JP S55141450A
Authority
JP
Japan
Prior art keywords
alkylamides
recovery
wash water
aqueous solution
solution containing
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.)
Pending
Application number
JP4971179A
Other languages
Japanese (ja)
Inventor
Takaho Kaneda
Masahiro Ueda
Tadahiro Hondo
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.)
Ube Corp
Original Assignee
Ube Industries Ltd
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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP4971179A priority Critical patent/JPS55141450A/en
Publication of JPS55141450A publication Critical patent/JPS55141450A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pyrrole Compounds (AREA)

Abstract

PURPOSE: To extract and recover an N-alkylamide from an aqueous solution containing the amide, in high efficiency, by using a specific extraction solvent.
CONSTITUTION: N-Alkylamides (e.g. DMA, NMP, 1,3-dimethyl-2-imidazolidinone) are recovered from an aqueous solution containing the amides, by extracting with an extraction solvent selected from pyrrole, anilines, 1-pentanol, cyclohexanol, 3- chloropropionitrile, and phenols. The volume ratio of the solvent to the solution is 0.05W5 to 1. Useful for the recovery of N-alkylamides from a large amount of wash water used for the separation of an aromatic polyamide from its solution. The process can be applied effectively even if the wash water contains LiCl or CaCl2.
COPYRIGHT: (C)1980,JPO&Japio
JP4971179A 1979-04-24 1979-04-24 Recovery of n-alkylamides Pending JPS55141450A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4971179A JPS55141450A (en) 1979-04-24 1979-04-24 Recovery of n-alkylamides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4971179A JPS55141450A (en) 1979-04-24 1979-04-24 Recovery of n-alkylamides

Publications (1)

Publication Number Publication Date
JPS55141450A true JPS55141450A (en) 1980-11-05

Family

ID=12838764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4971179A Pending JPS55141450A (en) 1979-04-24 1979-04-24 Recovery of n-alkylamides

Country Status (1)

Country Link
JP (1) JPS55141450A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62145061A (en) * 1985-12-20 1987-06-29 Toyo Soda Mfg Co Ltd Purification of n-methyl-2-pyrrolidone
JP2005330186A (en) * 2004-05-18 2005-12-02 Sumitomo Chemical Co Ltd Method for recovering 1,3-dimethyl-2-imidazolidinone
CN111097191A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Method for recovering organic solvent by extraction-rectification method
CN111100028A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Extraction-rectification recovery method of N, N-dimethylformamide
CN111100055A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Extraction-rectification recovery method of N-methyl pyrrolidone in waste solvent
EP4306508A1 (en) * 2022-07-14 2024-01-17 BASF Agro B.V. Improved process for recovering n,n-dimethylformamide (dmf) from an aqueous process stream

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62145061A (en) * 1985-12-20 1987-06-29 Toyo Soda Mfg Co Ltd Purification of n-methyl-2-pyrrolidone
JP2005330186A (en) * 2004-05-18 2005-12-02 Sumitomo Chemical Co Ltd Method for recovering 1,3-dimethyl-2-imidazolidinone
JP4586414B2 (en) * 2004-05-18 2010-11-24 住友化学株式会社 Method for recovering 1,3-dimethyl-2-imidazolidinone
CN111097191A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Method for recovering organic solvent by extraction-rectification method
CN111100028A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Extraction-rectification recovery method of N, N-dimethylformamide
CN111100055A (en) * 2018-10-25 2020-05-05 中国石油化工股份有限公司 Extraction-rectification recovery method of N-methyl pyrrolidone in waste solvent
CN111100028B (en) * 2018-10-25 2023-11-28 中国石油化工股份有限公司 Extraction-rectification recovery method of N, N-dimethylformamide
EP4306508A1 (en) * 2022-07-14 2024-01-17 BASF Agro B.V. Improved process for recovering n,n-dimethylformamide (dmf) from an aqueous process stream

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