Class / Patent application number | Description | Number of patent applications / Date published |
560217000 | Preparing esters by ester interchange | 14 |
20100145092 | METHOD FOR THE SYNTHESIS OF (METH)ACRYLIC ESTERS CATALYSED BY A POLYOL TITANATE - The subject of the invention is a method for the synthesis of (meth)acrylic esters by transesterification in the presence of a catalyst corresponding to the formula [(R′O) | 06-10-2010 |
20100204509 | METHOD FOR PRODUCING (METH)ACRYLATES - The present invention relates to a process for preparing (meth)acrylates, which comprises the transesterification of an alcohol with a low-boiling ester of (meth)acrylic acid in the presence of catalysts, with the alcohol liberated from the low-boiling ester of (meth)acrylic acid being separated off by distillation, characterized in that the molar ratio of low-boiling ester of (meth)acrylic acid to starting alcohol present in the reaction mixture is increased during the reaction by addition of low-boiling ester of (meth)acrylic acid. The process of the invention makes a particularly inexpensive preparation of (meth)acrylates having a very high purity possible. | 08-12-2010 |
20100298594 | PRODUCTION OF N,N-DIALKLYLAMINOETHYL (METH)ACRYLATES - A method and apparatus for preparing a N,N-dialkylaminoalkyl acrytate in a continuous transesterification reaction. The reaction involves adding alkyl acrylates such as methacrylate or ethacrylate to a reboiler mechanism and efficiently removing alcohol co-products. Because the reaction is continuous, the alkyl acrylates can be added as needed to increase output, decrease output, or fine-tune the reaction dynamics. An entrainer is used to form a volatile azeotrope which contains both alcohol and entrainer and which is easily removed from the reboiler mechanism. This method reduces the amount of entrainer needed per unit of alkyl acrylate used and eliminates any need to purify the end product from entrainer contamination of the resulting N,N-dialkylaminoalkyl acrylate product. | 11-25-2010 |
20110130590 | METHOD FOR THE PRODUCTION OF (METH)ACRYLIC ESTERS - The present invention relates to a process for preparing (meth)acrylates, comprising the transesterification of a low-boiling ester of (meth)acrylic acid with a reactant alcohol in the presence of catalysts, which is characterized in that the transesterification is catalysed by a basic ion exchanger. | 06-02-2011 |
20110201839 | MANUFACTURE OF ESTERS - The invention relates to a process in which a compound R | 08-18-2011 |
20120123148 | COMPOSITION INCLUDING DIALKYL TIN OXIDE AND USE THEREOF AS A TRANSESTERIFICATION CATALYST FOR THE SYNTHESIS OF (METH) ACRYLIC ESTERS - The present invention relates to a composition including a dialkyl tin oxide, such as DBTO, which can be used as a transesterification catalyst for the synthesis of (meth)acrylic esters. The invention also relates to a method for the synthesis of (meth)acrylic esters by transesterification in the presence of said composition. | 05-17-2012 |
20140371482 | METHOD FOR THE PRODUCTION OF 2-OCTYL ACRYLATE BY MEANS OF TRANSESTERIFICATION - The invention relates to the production of 2-octylacrylate of high purity and in good yield using ethyl titanate in solution in 2-octanol or 2-octyl titanate as a transesterification catalyst. | 12-18-2014 |
20150045578 | TRANSESTERIFICATION PROCESS - A transesterification process produces a (meth)acrylate ester product from a mixture comprising an alkyl(meth)acrylate reactant, an alcohol reactant, a catalyst, and a polymerization inhibitor, wherein the water content in the reaction zone at the start of the transesterification step is from 0.2 to 1.1 weight percent, based on the weight of the materials in the reaction zone. The mixture is subjected to reaction conditions sufficient to produce a product (meth)acrylate and a product alcohol, which are different than the reactants. | 02-12-2015 |
20150315120 | PROCESS FOR PRODUCING ALKYL ACRYLATE - The invention relates to the production of alkyl acrylate according to a continuous transesterification process. In one embodiment the process of the invention uses a simple column to purify a reaction mixture of acryl acrylate in one step yielding alkyl acrylate with a purity of greater than 99.8%. | 11-05-2015 |
20160023985 | PROCESS FOR PRODUCING 2-PROPYLHEPTYL ACRYLATE BY TRANSESTERIFICATION - The invention relates to the industrial production of highly pure 2-propylheptyl acrylate with a high yield according to a process by transesterification, preferably in semi-continuous mode. The process according to the invention uses ethyl titanate in solution in 2-propylheptanol or 2-propylheptyl titanate as tranesterification catalyst, and implements a purification sequence comprising a single distillation column and a film evaporator. | 01-28-2016 |
20160046556 | PROCESS FOR PREPARING (METH)ACRYLATES - Process for preparing (meth)acrylates of the formula (I) | 02-18-2016 |
20160090348 | PREPARATION OF C8-C24 ALKYL (METH)ACRYLATES - The invention relates to a process for preparing a C | 03-31-2016 |
20160122276 | PREPARATION OF C8-C22 ALKYL (METH)ACRYLATES - The invention relates to a method of preparing a C | 05-05-2016 |
20160152544 | METHOD FOR PRODUCING 2-ISOPROPENYL-5-METHYL-4-HEXEN-1-YL 3-METHYL-2-BUTENOATE | 06-02-2016 |