Patent application number | Description | Published |
20100204083 | PROCESS FOR THE PREPARATION OF ETHYLGERANONITRILE - The present invention relates to a method of producing ethylgeranonitrile through reaction of ethylheptenone with a deprotonated nitrile and, if appropriate, subsequent saponification and decarboxylation. Moreover, the invention relates to mixtures comprising 3,7-dimethyl-2,6-nonadienenitrile and at least one compound selected from the group of compounds 3,7-dimethyl-3,6-nonadienenitrile and 3-methylene-7-methyl-6-nonenenitrile, and to fragrance compositions comprising these. | 08-12-2010 |
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 |
20100222606 | METHOD FOR PRODUCING BISABOLOL WHICH IS FARNESOL FREE OR IS LOW IN FARNESOL - The present invention relates to a method of producing pure or enriched bisabolol by separating substance mixtures comprising bisabolol and farnesol by selective esterification of farnesol and subsequent distillative separation. The invention relates specifically to a method as specified above comprising the selective transesterification of mixtures comprising formyl-bisabolol and formyl-farnesol and subsequent distillative separation. | 09-02-2010 |
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 |
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 |
20130230476 | Fragrance Compositions Comprising Special Mixtures of Diastereomers of 2-Isobutyl-4-Methyl-Tetrahydro-2H-Pyran-4-OL - The present invention relates to a fragrance composition comprising a mixture of diastereomers of 2-isobutyl-4-methyl-tetrahydro-2H-pyran-4-ol, which comprises more than 95 wt. % of the optically inactive cis-racemate and less than 5 wt. % of the optically inactive trans-racemate. The present invention further relates to a method for producing a perfumed product or article as well as perfumed or aromatized articles comprising the fragrance compositions of the present invention. | 09-05-2013 |
20140107352 | PROCESS FOR THE INTEGRATED PREPARATION OF 2-SUBSTITUTED 4-HYDROXY-4-METHYLTETRAHYDROPYRANS AND OF 2-SUBSTITUTED 4-METHYLTETRAHYDROPYRANS - The present invention relates to a process for the integrated preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans and of 2-substituted 4-methyltetrahydropyrans. | 04-17-2014 |
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 |
20140213494 | USE OF 4,8 DIMETHYL-3,7 NONADIEN-2-OL AS FRAGRANCE - 4,8-Dimethyl-3,7-nonadien-2-ol in which the weight ratio of (E)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80% or in which the weight ratio of (Z)-4,8-dimethyl-3,7-nonadien-2-ol to the sum of (E)- and (Z)-4,8-dimethyl-3,7-nonadien-2-ol is at least 80%, is used as fragrance. The fragrances have a unique rose-like, floral character. Citrus-like, minty, green accompanying notes reminiscent of rhubarb arise. | 07-31-2014 |