| Patent application number | Description | Published |
|---|
| 20090182167 | PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ESTERS - Continuous process for preparing alpha-hydroxycarboxylic esters, in which the reactants reacted are alpha-hydroxycarboxamide with an alcohol in the presence of a catalyst to obtain a product mixture which comprises alpha-hydroxycarboxylic ester, ammonia, unconverted alpha-hydroxycarboxamide and alcohol, and catalyst; wherein
| 07-16-2009 |
| 20090209781 | PROCESS FOR PREPARING ALPHA-HYDROXYCARBOXYLIC ACIDS - Continuous process for preparing alpha-hydroxycarboxylic esters, in which the reactants reacted are alpha-hydroxycarboxamide with an alcohol in the presence of a catalyst to obtain a product mixture which comprises alpha-hydroxycarboxylic ester, ammonia, unconverted alpha-hydroxycarboxamide and alcohol, and catalyst; wherein
| 08-20-2009 |
| 20100010276 | PROCESS FOR PREPARING TETRAMETHYL GLYCOLIDE - The present invention relates to a process for preparing tetramethylglycolide by heating a composition which comprises at least 50% by weight of 2-hydroxy-isobutyric acid and/or tetramethylglycolide to a temperature of at least 100° C. | 01-14-2010 |
| 20100021977 | PROCESS FOR PREPARING ALKYL (METH)ACRYLATES USING AN ENZYMATIC CYANOHYDRIN HYDROLYSIS - The present invention relates to a process for preparing alkyl(meth)acrylates, characterized in that the process has a step in which a cyanohydrin is hydrolysed with an enzyme whose residual activity after the conversion of methacrylonitrile in the presence of 20 mM cyanide ions at 20° C. after 30 min is at least 90% of the residual activity of the enzyme which has been used under otherwise identical conditions in the absence of cyanide ions. | 01-28-2010 |
| 20100029979 | PROCESS FOR PREPARING (METH)ACRYLIC ACID - The present invention relates to a process for preparing (meth)acrylic acid, characterized in that a cyclic ester is converted to (meth)acrylic acid in the presence of a catalyst. The (meth)acrylic acid prepared can in particular be converted to (meth)acrylates. | 02-04-2010 |
| 20110034728 | CATALYST FOR REACTING CARBOXYLIC ACID NITRILES - The present invention relates to a catalyst for reacting carbonitriles with water, wherein the catalyst comprises at least 60% by weight of manganese dioxide with an empirical formula MnO | 02-10-2011 |
| 20110060159 | PROCESS FOR PREPARING CARBOXAMIDES BY HYDROLYSING CARBONITRILES IN THE PRESENCE OF A CATALYST COMPRISING MANGANESE DIOXIDE - The present invention relates to a process for preparing carboxamides by hydrolysing carbonitriles in the presence of a catalyst comprising manganese dioxide, wherein the reaction mixture added to the catalyst comprising manganese dioxide has a pH in the range of 6.0 to 11.0 and the hydrolysis is performed in the presence of an oxidizing agent. | 03-10-2011 |
