KR100313669B1 - N,n-디메틸아세트아미드의 제조방법 - Google Patents
N,n-디메틸아세트아미드의 제조방법 Download PDFInfo
- Publication number
- KR100313669B1 KR100313669B1 KR1019990044579A KR19990044579A KR100313669B1 KR 100313669 B1 KR100313669 B1 KR 100313669B1 KR 1019990044579 A KR1019990044579 A KR 1019990044579A KR 19990044579 A KR19990044579 A KR 19990044579A KR 100313669 B1 KR100313669 B1 KR 100313669B1
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- KR
- South Korea
- Prior art keywords
- dimethylacetamide
- acetic acid
- reaction
- dimethylamine
- producing
- 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.)
- Expired - Fee Related
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
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- 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
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
- C07C2521/04—Alumina
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims (6)
- 디메틸아민과 초산을 반응원료로 사용하는 초산법에 의해 N,N-디메틸아세트아미드를 제조하는 방법에 있어서,디메틸아민과 초산을 50 ∼ 160℃에서 중화반응시켜 N,N-디메틸암모니움 아세테이트를 제조하고, 제조된 N,N-디메틸암모니움 아세테이트를 알루미나 또는 알루미나-몰리브덴(VI)산화물의 혼합물 중에서 선택된 알루미나계 촉매하에서 상압 및 130 ∼ 180℃ 반응온도 조건에서 탈수반응을 수행하는 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
- 제 1 항에 있어서, 상기 디메틸아민/초산의 반응몰비가 1 ∼ 5인 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
- 제 1 항에 있어서, 상기 N,N-디메틸암모니움 아세테이트는 탈수반응기내의 반응시간이 1 ∼ 3.5 시간인 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
- 제 1 항에 있어서, 상기 탈수반응중에 생성되는 생성물은 탈수반응기에 부착된 증류탑을 이용하여 증류하는 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
- 제 4 항에 있어서, 상기 탈수반응기에 부착된 증류탑의 충진물로는 라시히 링을 사용한 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
- 제 1 항에 있어서, 상기 제조방법은 회분식 또는 연속식으로 수행하는 것을 특징으로 하는 N,N-디메틸아세트아미드의 제조방법.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990044579A KR100313669B1 (ko) | 1999-10-14 | 1999-10-14 | N,n-디메틸아세트아미드의 제조방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990044579A KR100313669B1 (ko) | 1999-10-14 | 1999-10-14 | N,n-디메틸아세트아미드의 제조방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010037195A KR20010037195A (ko) | 2001-05-07 |
| KR100313669B1 true KR100313669B1 (ko) | 2001-11-15 |
Family
ID=19615375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990044579A Expired - Fee Related KR100313669B1 (ko) | 1999-10-14 | 1999-10-14 | N,n-디메틸아세트아미드의 제조방법 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100313669B1 (ko) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118161957B (zh) * | 2024-03-13 | 2024-09-24 | 山东中盛药化设备有限公司 | 一种dmac回收提纯中的二甲胺再利用系统及方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707783A (en) * | 1951-12-07 | 1954-04-21 | Chemstrand Corp | Improvements in or relating to process for purifying n-dimethyl-acetamide |
| US4139557A (en) * | 1976-12-27 | 1979-02-13 | Neduv Mikhail B | Method of preparing dimethylacetamide in presence of MoO3 catalyst |
| WO1999054281A1 (en) * | 1998-04-20 | 1999-10-28 | Mitsubishi Rayon Co., Ltd. | Process for producing dimethylacetamide |
-
1999
- 1999-10-14 KR KR1019990044579A patent/KR100313669B1/ko not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB707783A (en) * | 1951-12-07 | 1954-04-21 | Chemstrand Corp | Improvements in or relating to process for purifying n-dimethyl-acetamide |
| US4139557A (en) * | 1976-12-27 | 1979-02-13 | Neduv Mikhail B | Method of preparing dimethylacetamide in presence of MoO3 catalyst |
| WO1999054281A1 (en) * | 1998-04-20 | 1999-10-28 | Mitsubishi Rayon Co., Ltd. | Process for producing dimethylacetamide |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010037195A (ko) | 2001-05-07 |
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