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Guido Protzmann, Bensheim DE

Guido Protzmann, Bensheim DE

Patent application numberDescriptionPublished
20100185009METHOD FOR SYNTHESIZING ALLYL METHACRYLATE - The present invention relates to a process for preparing allyl methacrylate, comprising the reaction of allyl alcohol with an ester of methacrylic acid, wherein the reaction is catalysed by zirconium acetylacetonate. The process according to the invention enables particularly favourable preparation of allyl methacrylate with a very high purity.07-22-2010
20100197955METHOD FOR PRODUCING BUTANEDIOL DIMETHACRYLATES - The present invention relates to a process for preparing butanediol dimethacrylates, which comprises the transesterification of butanediol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising at least one lithium compound and at least one calcium compound is used as catalyst, at least one of the compounds of lithium and/or of calcium is an oxide, a hydroxide, an alkoxide having from 1 to 4 carbon atoms or a carboxylate having from 1 to 4 carbon atoms and at least part of the reaction is carried out in the presence of an effective amount of water. The process of the invention makes a particularly inexpensive preparation of butanediol dimethacrylates having a very high purity possible.08-05-2010
20100204509METHOD 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
20100280205PROCESS FOR PREPARING (METH)ACRYLATES - Process for preparing (meth)acrylates of the formula (I)11-04-2010
20100314239METHOD FOR PURIFYING METHACRYLIC ACID - The present invention relates to a process for purifying methacrylic acid, wherein the reaction mixture obtained by a reaction of methacrylamide with water is cooled by mixing with an aqueous medium and then passed into a phase separator.12-16-2010
20100331572METHOD FOR PRODUCING METHACRYLIC ACID - The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.12-30-2010
20110313195METHOD FOR CONTINUOUSLY PRODUCING ALKYLAMINO(METH)ACRYLAMIDES - The invention relates to a process for continuously preparing N-alkyl(meth)acrylamides by reacting alkyl (meth)acrylates with high-boiling amines. A catalyst activation and specific workup technique achieve product qualities which have not been achieved to date. In addition, very high space-time yields and overall yields can be achieved.12-22-2011
20120004460METHOD FOR PRODUCING METHACRYLIC ACID - The present invention relates to a method for producing methacrylic acid by reacting methacrylamide with water, wherein said reaction is performed continuously in a tube reactor and a pressure differential exists in the flow direction of the reaction mixture inside said tube reactor. Furthermore, the present invention discloses a facility for carrying out the method according to the invention.01-05-2012
20130172598METHOD FOR PRODUCING ETHYLENE GLYCOL DIMETHACRYLATE - The present invention relates to a process for preparing ethylene glycol dimethacrylate, which comprises transesterification of ethylene glycol with an ester of methacrylic acid in the presence of catalysts, wherein a combination comprising lithium amide (LiNH07-04-2013

Patent applications by Guido Protzmann, Bensheim DE

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