Basf Aktiengesellschaft

Basf Se Corporation

Hugues Vandenmersch

Juergen Schroeder

Gerhard Nestler

Hartwig Voss

Jürgen Schröder

Joachim Thiel

Stefan Bitterlich

Albrecht Dams

Christian Wulff

Stefan Orsten

Matthias Geisendoerfer

Reinhard Freyhof

Matthias Geisendörfer

Basic (meth)acrylates IV are prepared by transesterification of alkyl (meth)acrylates I in the presence of a catalyst and working-up of the reaction mixture by distillation, by a process in which a gas or gas mixture which is inert under the reaction conditions is passed through the reaction zone and/or heat exchanger.

Method for producing (meth)acrylic acid esters

In a thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column containing sieve trays as separating internals, at least some of the sieve trays are operated above an entrainment fraction of 10% by weight.

Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers

The present invention relates to a process for the recovery of N-phosphonomethylglycine from an aqueous mixture which contains N-phosphonomethylglycine, ammonium halides, and alkali metal or alkaline earth metal halides and optionally organic impurities in dissolved form, where The process according to the invention makes possible the recovery of the N-phosphonomethylglycine with simultaneous separation of the halide salts.

Method for producing N-phosphonomethylglycine

A process for isolating trioxane from an aqueous mixture which includes trioxane, water and formaldehyde, including removing trioxane from the mixture by pervaporation, and subjecting the mixture enriched in trioxane (permeate) to rectification to give trioxane and an azeotropic mixture of trioxane, water and formaldehyde.

Method for trioxane isolation

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Wachenheim, Germany

Hugues Vandenmersch