IL179665A0 - Method for the purification of dimethylacetamide (dmac) - Google Patents
Method for the purification of dimethylacetamide (dmac)Info
- Publication number
- IL179665A0 IL179665A0 IL179665A IL17966506A IL179665A0 IL 179665 A0 IL179665 A0 IL 179665A0 IL 179665 A IL179665 A IL 179665A IL 17966506 A IL17966506 A IL 17966506A IL 179665 A0 IL179665 A0 IL 179665A0
- Authority
- IL
- Israel
- Prior art keywords
- dmac
- boiling
- dimethylacetamide
- purification
- low
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/02—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
- C07C233/04—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
- C07C233/05—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton having the nitrogen atoms of the carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/10—Preparation of carboxylic acid amides from compounds not provided for in groups C07C231/02 - C07C231/08
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/22—Separation; Purification; Stabilisation; Use of additives
- C07C231/24—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Pyrrole Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Disclosed is a method for the distillative purification of aqueous raw dimethylacetamide (raw DMAc) containing DMAc as well as low-boiling and high-boiling components. According to the inventive method, the low-boiling and high-boiling components are eliminated in one column or several columns that are mounted in series so as to obtain pure DMAc. The disclosed method is characterized in that the pure DMAc is withdrawn from the single column or the last of several columns as a liquid side stream.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004030616A DE102004030616A1 (en) | 2004-06-24 | 2004-06-24 | Process for the purification of dimethylacetamide (DMAc) |
PCT/EP2005/006732 WO2006000392A1 (en) | 2004-06-24 | 2005-06-22 | Method for the purification of dimethylacetamide (dmac) |
Publications (1)
Publication Number | Publication Date |
---|---|
IL179665A0 true IL179665A0 (en) | 2007-05-15 |
Family
ID=35266859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL179665A IL179665A0 (en) | 2004-06-24 | 2006-11-28 | Method for the purification of dimethylacetamide (dmac) |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP1768953B1 (en) |
KR (1) | KR101101023B1 (en) |
CN (1) | CN100569737C (en) |
AT (1) | ATE395324T1 (en) |
DE (2) | DE102004030616A1 (en) |
ES (1) | ES2304015T3 (en) |
IL (1) | IL179665A0 (en) |
TW (1) | TWI350196B (en) |
WO (1) | WO2006000392A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058887A1 (en) | 2004-12-06 | 2006-06-08 | Basf Ag | Process for the preparation of N, N-dimethylacetamide (DMAC) |
DE102004058888A1 (en) | 2004-12-06 | 2006-06-08 | Basf Ag | Process for the preparation of N, N-dimethylacetamide (DMAC) |
DE102004058886A1 (en) | 2004-12-06 | 2006-06-08 | Basf Ag | Process for the preparation of N, N-dimethylacetamide (DMAC) |
KR100881763B1 (en) * | 2007-05-14 | 2009-02-09 | 이택홍 | The Refining method of Ammonia and apparatus thereof |
CN101462977B (en) * | 2008-07-25 | 2012-07-25 | 烟台泰和新材料股份有限公司 | Purification method of N,N-dimethylacetamide |
CN102030672B (en) * | 2010-12-09 | 2013-10-09 | 南京大学 | Process for reclaiming super-high-purity N,N-dimethyl acetamide solvent in polyurethane fibre production process |
EP2778132A4 (en) * | 2011-11-11 | 2015-08-26 | Lg Chemical Ltd | Trihalosilane refining device |
EP2778131B1 (en) * | 2011-11-11 | 2017-10-11 | LG Chem, Ltd. | Trihalosilane refining device |
CN102993039A (en) * | 2012-12-18 | 2013-03-27 | 常州大学 | Method for recovering dimethyl acetamide in polyether sulfone spinning wastewater |
JP5793157B2 (en) * | 2013-03-04 | 2015-10-14 | 日本リファイン株式会社 | Solution processing equipment |
CN110423192A (en) * | 2019-08-14 | 2019-11-08 | 郑州中科新兴产业技术研究院 | A kind of recovery method of spandex DMAC/ acetic acid organic liquid waste |
CN111821714B (en) * | 2020-07-27 | 2021-07-20 | 华峰集团上海工程有限公司 | Polyamide is with continuous concentrated system of refined salt |
KR102283486B1 (en) | 2020-10-08 | 2021-07-29 | 윤명덕 | System for munufacturing high purity dimethylamine |
KR102283485B1 (en) | 2020-10-08 | 2021-07-30 | (주)엠지케이 | Method for munufacturing high purity dimethylamine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6946060B2 (en) * | 2002-07-01 | 2005-09-20 | Mallinckrodt Inc. | Purification of N,N-dimethylacetamide |
DE10315214A1 (en) * | 2003-04-03 | 2004-10-14 | Basf Ag | Process for the purification of dimethylacetamide (DMAC) |
-
2004
- 2004-06-24 DE DE102004030616A patent/DE102004030616A1/en not_active Withdrawn
-
2005
- 2005-06-21 TW TW094120522A patent/TWI350196B/en not_active IP Right Cessation
- 2005-06-22 DE DE502005004136T patent/DE502005004136D1/en active Active
- 2005-06-22 AT AT05753206T patent/ATE395324T1/en not_active IP Right Cessation
- 2005-06-22 WO PCT/EP2005/006732 patent/WO2006000392A1/en active IP Right Grant
- 2005-06-22 KR KR1020067026896A patent/KR101101023B1/en not_active IP Right Cessation
- 2005-06-22 CN CNB2005800205496A patent/CN100569737C/en not_active Expired - Fee Related
- 2005-06-22 EP EP05753206A patent/EP1768953B1/en not_active Not-in-force
- 2005-06-22 ES ES05753206T patent/ES2304015T3/en active Active
-
2006
- 2006-11-28 IL IL179665A patent/IL179665A0/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP1768953A1 (en) | 2007-04-04 |
TW200611746A (en) | 2006-04-16 |
KR20070022779A (en) | 2007-02-27 |
ES2304015T3 (en) | 2008-09-01 |
WO2006000392A1 (en) | 2006-01-05 |
DE102004030616A1 (en) | 2006-01-26 |
KR101101023B1 (en) | 2011-12-29 |
EP1768953B1 (en) | 2008-05-14 |
TWI350196B (en) | 2011-10-11 |
DE502005004136D1 (en) | 2008-06-26 |
CN100569737C (en) | 2009-12-16 |
CN1972902A (en) | 2007-05-30 |
ATE395324T1 (en) | 2008-05-15 |
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