Patent application number | Description | Published |
20080214877 | Method for the Production of Enriched Isopulegol - The present invention relates to a process for preparing enriched isopulegol by crystallization from a melt comprising isopulegol. The invention relates specifically to a process for preparing enantiomerically enriched n-isopulegol proceeding from optically active isopulegol having a relatively low enantiomeric excess by crystallization from the melt. The invention further relates to a process for preparing menthol proceeding from enantiomerically and/or diastereomerically enriched n-isopulegol prepared by crystallization from the melt. | 09-04-2008 |
20080234350 | Crystalline Modifications to Pyraclostrobin - The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions. | 09-25-2008 |
20080306312 | Process for Obtaining Alkoxides - Alkoxides are isolated by crystallization of an alcohol from a solution in the corresponding alcohol, with the alkoxide being crystallized out at a pressure of at least 3 bar abs. and a temperature of at least 120° C. | 12-11-2008 |
20080312439 | Work-Up in the Preparation of High-Purity Triethylenediamine - The present invention relates to a process for working up triethylenediamine (TEDA) in which TEDA is vaporized and the gaseous TEDA is introduced into a solvent, subsequently crystallized and separated off from this and the mother liquor formed is extracted with an extractant, wherein the raffinate phase obtained after the extraction stage is worked up further by adsorption in which extractant and/or by-products and intermediates present in the raffinate phase are removed therefrom. | 12-18-2008 |
20090163684 | METHOD FOR PURIFYING POLAR VINYL COMPOUNDS - Method of purifying an open-chain N-vinyl compound by crystallization in a crystallizer, the crystallization being carried out from a melt of a mixture comprising open-chain N-vinyl compound at a pressure of 10 | 06-25-2009 |
20110054000 | Crystalline Modifications of Pyraclostrobin - The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions. | 03-03-2011 |
Patent application number | Description | Published |
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 |
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 |