Patent application number | Description | Published |
20080306299 | Method for the Production of Aminoalkane Acid Amides - The invention relates to a process for preparing aminoalkanamides by reacting cyanoalkanoic esters with a) ammonia or an amine and b) hydrogen in the presence of a catalyst, the reaction with component b) being started simultaneously or not later than a maximum of 100 minutes after commencement of the reaction of the cyanoalkanoic ester with component a). | 12-11-2008 |
20100010253 | RECOVERY OF BIS(DIARYLPHENOL) LIGANDS DURING THE PRODUCTION OF ISOPULEGOL - The present invention relates to a method of working up an aluminium-containing reaction product from the production of isopulegol by cyclization of citronellal in the presence of complex compounds, comprising at least one ligand of the formula (I), | 01-14-2010 |
20100016642 | RECOVERY OF PHENOL LIGANDS DURING THE PRODUCTION OF ISOPULEGOL - The present invention relates to a method of working up an aluminum-containing reaction product from the production of isopulegol by cyclization of citronellal in the presence of complex compounds, comprising at least one ligand of the formula (I), | 01-21-2010 |
20100185024 | Menthol Flakes And Method For Producing The Same - The present invention relates to a method for preparing L-menthol in solid form, specifically in the form of flakes, by bringing an L-menthol melt into contact with two chilled surfaces distanced from one another. Moreover, the present invention relates to the L-menthol in solid form obtainable by said method, and also to its use for incorporation into utility and consumer goods of all kinds. | 07-22-2010 |
20100191021 | PROCESS FOR PREPARATION OF MENTHOL BY HYDROGENATION OF ISOPULEGOL - The present invention relates to a process for preparing racemic or optically active menthol by catalytically hydrogenating racemic or optically active isopulegol in the presence of hydrogen and catalysts which comprise nickel-, copper-, zirconium- and molybdenum-containing compounds. The present invention relates specifically to a corresponding process far continuously catalytically hydrogenating L-isopulegol to L-menthol. | 07-29-2010 |
20100193348 | CONTINUOUS PROCESS FOR PREPARING NERAL IN PURE OR ENRICHED FORM - The present invention relates to a continuous process for preparing neral (cis-citral) in pure or enriched form by distillatively separating neral from substance mixtures comprising essentially neral and geranial (trans-citral). This distillative separation is performed in a dividing wall column or in a connection of two distillation columns in the form of a thermal coupling. | 08-05-2010 |
20100206712 | CONTINUOUS PROCESS FOR PREPARING MENTHOL IN PURE OR ENRICHED FORM - The present invention relates to a continuous process for preparing racemic or optically active menthol in pure or enriched form by distillatively separating menthol from substance mixtures which comprise essentially menthol and diastereomers thereof. This distillatiive separation is performed in a dividing wall column with 50 to 300 theoretical plates and one or more side draw points at an absolute operating pressure of 5 to 500 mbar. | 08-19-2010 |
20100249467 | METHOD FOR PRODUCING OPTICALLY ACTIVE, RACEMIC MENTHOL - The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method comprises the following steps | 09-30-2010 |
20110045560 | METHOD FOR PRODUCING OPTICALLY ACTIVE 2-METHYL-ALKANOLS - A process for preparing optically active 2-methylalkan-1-ol of the general formula (III) comprising the following steps:
| 02-24-2011 |
20120108874 | PROCESS FOR PREPARING A PHENYLCYCLOHEXANE - The present invention relates to an improved process for preparing a substituted or unsubstituted phenylcyclohexane by catalytic hydrogenation of a substituted or unsubstituted biphenyl. | 05-03-2012 |
20130046118 | METHOD FOR PRODUCING OPTICALLY ACTIVE, RACEMIC MENTHOL - The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method comprises the following steps
| 02-21-2013 |
20140158515 | CONTINUOUS PROCESS FOR PREPARING MENTHOL IN PURE OR ENRICHED FORM - The present invention relates to a continuous process for preparing racemic or optically active menthol in pure or enriched form by distillatively separating menthol from substance mixtures which comprise essentially menthol and diastereomers thereof. This distillative separation is performed in a dividing wall column with 50 to 300 theoretical plates and one or more side draw points at an absolute operating pressure of 5 to 500 mbar. | 06-12-2014 |