PROCESS FOR PREPARING METHACRYLIC ACID AND/OR ALKYL METHACRYLATES

摘要

The present invention provides a process for the continuously operated preparation of methacrylic acid and/or alkyl methacrylates having 1 to 8 C atoms in the alkyl radical by heterogeneous-catalytic partial oxidation of organic compounds in the gas phase, at least one carboxylic acid having 2 to 5 carbon atoms being isolated from the wastewater stream produced in this process.