Evonik Rohm Gmbh

Roehm Gmbh & Co Kg

Thomas Schaefer

Udo Gropp

Thomas Mertz

Robert Weber

Andreas Perl

Rudolf Sing

Hermann Siegert

Thomas Krauss

The present invention relates to a process for preparing alkyl methacrylates and their conversion products which can be used in a multitude of chemical synthesis processes which can lead to a wide variety of different further processing products, and to an apparatus for performing this process.

Process and apparatus for preparing alkyl esters of methacrylic acid

A reactor for preparing hydrogen cyanide by the Andrussow process is provided. The reactor comprises at least one gas inlet which opens into a gas inlet region, an outlet for the reaction products and a catalyst, wherein at least one mixing element and at least one gas-permeable intermediate layer are within the reactor between the gas inlet region and the catalyst. The mixing element is arranged between the gas inlet region and the gas-permeable intermediate layer. A process for preparing HCN, in the reactor is also provided.

Reactor for preparing hydrogen cyanide by the Andrussow process

The present invention relates in general terms to a process for preparing alkyl methacrylates, comprising as steps:

Method for producing methacrylic alkyl esters by way of azeotropic distillation

The present invention relates in general terms to a process for preparing acetone cyanohydrin, comprising as steps:

Method for producing acetone cyanohydrin and the subsequent products thereof by specific cooling

The invention relates in general terms to a process for preparing to a process for purifying an alkyl methacrylate, comprising the steps of:

Method for the adsorptive purification of alkyl methacrylates

Production by distillation of acetone cyanhydrin and method for producing methacrylic ester and subsequent products

The invention relates to a process for preparing acetone cyanohydrin and to a process for preparing alkyl methacrylates, in which an acetone cyanohydrin as can be prepared in accordance with the present invention is used.

Process for preparing cyanohydrins and their use in the preparation of alkyl esters of methacrylic acid

A process for the production of hydrogen cyanide is provided, wherein hydrogen cyanide is synthesized by reacting methane or methane-containing natural gas, ammonia and oxygen-enriched air or oxygen in the presence of a catalyst comprising platinum or a platinum alloy; wherein the reactants are present in the following molar ratios

Hydrogen cyanide synthesis process

A process for the synthesis of hydrogen cyanide by the Andrussow process by reaction of methane or methane-containing natural gas, ammonia and oxygen or oxygen-enriched air on a catalyst at an elevated temperature, wherein

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Buettelborn, Germany

Thomas Schaefer