JPS55143938A - Purification of tertiary amine - Google Patents
Purification of tertiary amineInfo
- Publication number
- JPS55143938A JPS55143938A JP5090479A JP5090479A JPS55143938A JP S55143938 A JPS55143938 A JP S55143938A JP 5090479 A JP5090479 A JP 5090479A JP 5090479 A JP5090479 A JP 5090479A JP S55143938 A JPS55143938 A JP S55143938A
- Authority
- JP
- Japan
- Prior art keywords
- tertiary amine
- formaldehyde
- amount
- ammonia
- yield
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To purify a tertiary amine and, in some cases, to improve its yield, by reacting formaldehyde (derivatives) remaining in the tertiary amine with ammonia under basic conditions.
CONSTITUTION: A tertiary amine is, obtained by the reductive methylation of a primary or secondary amine with formaldehyde and formic acid or formaldehyde and hydrogen. On this occasion, formaldehyde and/or formaldehyde derivatives remaining in the tertiary amine is reacted with ammonia under basic conditions, and the separated tertiary amine is purified. The amount of ammonia used is preferably such an amount that the amount of the free ammonia existing in the system is at least equivalent to remove the formaldehydes and, at the same time, pH of the system becomes at least 8. When the desired tertiary amine has functional groups, the yield of the desired substance can be improved by this process.
EFFECT: Neutralization, separation and removal of formaldehyde can be corried out at the same time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5090479A JPS6050181B2 (en) | 1979-04-26 | 1979-04-26 | Tertiary amine purification method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5090479A JPS6050181B2 (en) | 1979-04-26 | 1979-04-26 | Tertiary amine purification method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55143938A true JPS55143938A (en) | 1980-11-10 |
JPS6050181B2 JPS6050181B2 (en) | 1985-11-07 |
Family
ID=12871736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5090479A Expired JPS6050181B2 (en) | 1979-04-26 | 1979-04-26 | Tertiary amine purification method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6050181B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59199655A (en) * | 1983-04-27 | 1984-11-12 | Toyo Soda Mfg Co Ltd | Preparation of methylated amine compound |
JPS60112742A (en) * | 1983-11-24 | 1985-06-19 | Daicel Chem Ind Ltd | Method for purifying and recovering organic extractant |
-
1979
- 1979-04-26 JP JP5090479A patent/JPS6050181B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59199655A (en) * | 1983-04-27 | 1984-11-12 | Toyo Soda Mfg Co Ltd | Preparation of methylated amine compound |
JPS60112742A (en) * | 1983-11-24 | 1985-06-19 | Daicel Chem Ind Ltd | Method for purifying and recovering organic extractant |
Also Published As
Publication number | Publication date |
---|---|
JPS6050181B2 (en) | 1985-11-07 |
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