HUT61265A - Process for cleaning tertiary amines obtained by methylation with formaldehyde - Google Patents
Process for cleaning tertiary amines obtained by methylation with formaldehydeInfo
- Publication number
- HUT61265A HUT61265A HU43991A HU43991A HUT61265A HU T61265 A HUT61265 A HU T61265A HU 43991 A HU43991 A HU 43991A HU 43991 A HU43991 A HU 43991A HU T61265 A HUT61265 A HU T61265A
- Authority
- HU
- Hungary
- Prior art keywords
- formaldehyde
- alkanes
- methylation
- cleaning
- alkyl
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Tert. amines of general formulan R1N(R)CH3 (1) (where R= a cyclohexyl R1=R or alkyl), prepd. by methylation with formaldehyde, are purified as follows: raw prods. are subjected to a preliminary distillation to remove methanol, formaldehyde and part of the water. 8-12C aryl alkanes and/or cycloalkyl-alkanes are added to the resulting mix at a 5-20 fold concn. based on the combined mass of residual water and/or formic acid present, as formates. This mixt. is boiled for 4-10 hrs. in this case with a stream of inert gas bubbling through and/or at reduced pressure. Fractions are continuously removed and condensed, which aryl and/or cyclo-alkyl alkanes are simultaneously recirculate
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU43991A HU208667B (en) | 1991-02-11 | 1991-02-11 | Process for cleaning tertiary amines obtained by methnylation with formaldehyde |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU43991A HU208667B (en) | 1991-02-11 | 1991-02-11 | Process for cleaning tertiary amines obtained by methnylation with formaldehyde |
Publications (3)
Publication Number | Publication Date |
---|---|
HU910439D0 HU910439D0 (en) | 1991-08-28 |
HUT61265A true HUT61265A (en) | 1992-12-28 |
HU208667B HU208667B (en) | 1993-12-28 |
Family
ID=10949609
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HU43991A HU208667B (en) | 1991-02-11 | 1991-02-11 | Process for cleaning tertiary amines obtained by methnylation with formaldehyde |
Country Status (1)
Country | Link |
---|---|
HU (1) | HU208667B (en) |
-
1991
- 1991-02-11 HU HU43991A patent/HU208667B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
HU208667B (en) | 1993-12-28 |
HU910439D0 (en) | 1991-08-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
HMM4 | Cancellation of final prot. due to non-payment of fee | ||
DNF4 | Restoration of lapsed final protection | ||
HMM4 | Cancellation of final prot. due to non-payment of fee |