Patent application number | Description | Published |
20110098515 | METHOD OF PRODUCING NEOPENTYL GLYCOL - The present invention relates to a method of producing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give the hydroxypivalinaldehyde with subsequent liquid phase hydrogenation in the presence of a nickel catalyst at a temperature of 80 to 180° C. and at a pressure of 6 to 18 MPa in the presence of an aliphatic alcohol and in the presence of water. | 04-28-2011 |
20110184212 | PROCESS FOR PREPARING NEOPENTYL GLYCOL BY CRACKING HIGH BOILERS OCCURING IN THE PRODUCTION PROCESS - The present invention relates to a process for obtaining neopentyl glycol by hydrogenating cracking of high-boilers occurring in the production process in the presence of copper-chromite catalysts. The hydrogenating cracking proceeds in the absence of solvent at a temperature of 140 to 220° C. and at pressures of 7 to 28 MPa. | 07-28-2011 |
20130150624 | Method for Producing Primary Aliphatic Amines from Aldehydes - A continuous process for producing primary aliphatic amines having 9 to 18 carbon atoms by reaction of corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst in the liquid phase, characterized in that the reaction is carried out solventlessly at a molar ratio of aliphatic aldehyde:ammonia of at least 1:30, at a temperature of 100 to 200° C. and at a pressure of 6 to 11 MPa. | 06-13-2013 |
20140005441 | Method for Carrying Out Multiphase Aldol Condensation Reactions to Give Mixed a, beta-Unsaturated Aldehydes | 01-02-2014 |
20140284202 | Method for Recovering Di-Trimethylolpropane By Distillation - Distillative process for obtaining ditrimethylolpropane from solutions includes separating ditrimethylolpropane from the solution in a first distillation unit into a first tops fraction comprising low-boiling compounds having a lower boiling point than ditrimethylolpropane and a first bottoms fraction; introducing the first bottoms fraction into a second distillation unit having at least 5 theoretical plates, said unit being configured as a thin-film evaporator with a column attachement and drawing off a second tops fraction comprising intermediate-boiling compounds having a lower boiling point than ditrimethylolpropane as well as withdrawing a second bottoms fraction from the second distillation unit and introducing the second bottoms fraction into a third distillation unit having at least 4 theoretical plates, said unit being configured as a thin-film evaporator with a column attachement, such that ditrimethylolpropane is obtained as a third tops fraction and high boilers are removed as a third bottoms fraction. | 09-25-2014 |
20140288318 | Method for Recovering Di-Trimethylolpropane and Trimethylolpropane-Enriched Product Streams From the Side Streams of Trimethylolpropane Production - Process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane includes three stage distillation characterized in that second and third stages are configured as thin film evaporators with a column attachment with the second stage facilitating trimethylopropane recovery and the third stage facilitating ditrimethylolpropane recovery. | 09-25-2014 |
20140343310 | Method for Producing Vinyl Esters - The present invention relates to a continuous, catalytic process for preparing a vinyl ester of the formula R—C(O)O—CH═CH | 11-20-2014 |
20150191415 | Continuous Method for Producing Primary Aliphatic Amines from Aldehydes - A continuous process for preparing primary aliphatic amines having 3 to 18 carbon atoms by reacting corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst, characterized in that the reaction is carried out without solvent at a molar ratio of aliphatic aldehyde to ammonia of more than 1 to 16, above the critical temperature and above the critical pressure of ammonia. | 07-09-2015 |