JPS57167948A - Purification of dimethylethanolamine - Google Patents

Purification of dimethylethanolamine

Info

Publication number
JPS57167948A
JPS57167948A JP5368281A JP5368281A JPS57167948A JP S57167948 A JPS57167948 A JP S57167948A JP 5368281 A JP5368281 A JP 5368281A JP 5368281 A JP5368281 A JP 5368281A JP S57167948 A JPS57167948 A JP S57167948A
Authority
JP
Japan
Prior art keywords
dimethylethanolamine
mixture
treating agent
aging
separating
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
JP5368281A
Other languages
Japanese (ja)
Inventor
Tsuneo Kihamoto
Masao Kawamura
Sakae Yano
Atsui Kunisada
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.)
Sumitomo Seika Chemicals Co Ltd
Original Assignee
Seitetsu Kagaku Co 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 Seitetsu Kagaku Co Ltd filed Critical Seitetsu Kagaku Co Ltd
Priority to JP5368281A priority Critical patent/JPS57167948A/en
Publication of JPS57167948A publication Critical patent/JPS57167948A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To purify the titled compound useful as a synthetic raw material of pharmaceuticals, etc., in high purity, suppressing the discoloration with time, economically, in an industrial scale, by adding a treating agent such as ammonium sulfite to dimethylethanolamine, heating and aging the mixture, and separating the dimethylethanolamine from the mixture.
CONSTITUTION: Dimethylethanolamine can be purified by adding at least one treating agent selected from ammonium sulfite, ammonium persulfate, sodium bisulfite, aluminum chloride, ferric chloride, nickel nitrate, etc. to dimethylethanolamine in an amount of 0.1W2mol%, super-heating and aging the mixture (usually at 100W135°C), and separating the objective compound from the mixture. Since the impurities in dimethylethanolamine are converted to separable high-boiling compounds by reacting with the treating agent, the objective compound separated by distillation has high purity and exhibits extremely low discoloration with time.
COPYRIGHT: (C)1982,JPO&Japio
JP5368281A 1981-04-08 1981-04-08 Purification of dimethylethanolamine Pending JPS57167948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5368281A JPS57167948A (en) 1981-04-08 1981-04-08 Purification of dimethylethanolamine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5368281A JPS57167948A (en) 1981-04-08 1981-04-08 Purification of dimethylethanolamine

Publications (1)

Publication Number Publication Date
JPS57167948A true JPS57167948A (en) 1982-10-16

Family

ID=12949581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5368281A Pending JPS57167948A (en) 1981-04-08 1981-04-08 Purification of dimethylethanolamine

Country Status (1)

Country Link
JP (1) JPS57167948A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198788A2 (en) * 1985-04-19 1986-10-22 Sherex Chemical Company, Inc. Stabilizer for amine/quaternary ammonium blends
KR20030049149A (en) * 2001-12-14 2003-06-25 현대자동차주식회사 Lubrication structure of manual transmission
KR20040015986A (en) * 2002-08-14 2004-02-21 현대자동차주식회사 Structure for Lubricating of manual Transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0198788A2 (en) * 1985-04-19 1986-10-22 Sherex Chemical Company, Inc. Stabilizer for amine/quaternary ammonium blends
EP0198788A3 (en) * 1985-04-19 1988-06-08 Sherex Chemical Company, Inc. Stabilizer for amine/quaternary ammonium blends
KR20030049149A (en) * 2001-12-14 2003-06-25 현대자동차주식회사 Lubrication structure of manual transmission
KR20040015986A (en) * 2002-08-14 2004-02-21 현대자동차주식회사 Structure for Lubricating of manual Transmission

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