| Patent Number |
Title Of Patent |
Date Issued |
| 7345173 |
Work-up of the mother liquor obtained in the preparation of high-purity triethylenediamine |
March 18, 2008 |
| In a process for the purification of triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is passed into a liquid solvent and is subsequently crystallized from this, the mother liquor obtained after the TEDA has been crystallized is extracted with an extractant w |
| 7151177 |
Process for the preparation of highly pure triethylene diamine |
December 19, 2006 |
| Highly pure triethylenediamine is obtained by a process in which triethylenediamine is freed from high boilers and then the triethylenediamine is vaporized from the mixture thus obtained and is passed into a liquid solvent. The process makes it possible in particular to obtain highly |
| 6562971 |
Process for the preparation of triethylenediamine (TEDA) |
May 13, 2003 |
| A process for the preparation of triethylenediamine (TEDA) by reaction of ethylenediamine (EDA) in the presence of a zeolite catalyst, wherein the zeolite catalyst comprises one or more metals M in oxidation states II, III or IV as oxides, and for M=Al, has an SiO.sub.2 /M.sub.2 O.sub. |
| 6555688 |
Method for the production of triethylene diamine making use of ethylene diamine |
April 29, 2003 |
| The invention in question is concerned with a method for the production of triethylene diamine using ethylene diamine as an educt and zeolite catalysts of the Pentasil type. |
| 6552194 |
Process for the preparation of pure triethylenediamine (TEDA) |
April 22, 2003 |
| The invention relates to the preparation of pure triethylenediamine (TEDA) by evaporating TEDA from the mixture comprising a solvent or diluent, where the solvent or diluent has a boiling point at atmospheric pressure in the range from 175 to 250.degree. C., passing the vapor-form TEDA i |
| 6348607 |
Method for oxidizing an organic compound having at least one C-C double bond |
February 19, 2002 |
| In a process for oxidizing an organic compound containing at least one C--C double bond, or a mixture of two or more thereof, which comprises the step (II) below:(II) reaction of the organic compound or the mixture of two or more thereof with a medium comprising molecular oxygen in the p |
