Basf Aktiengesellschaft

Basf Se Corporation

Alexandra Brand

Regina Vogelsang

Hans-Josef Sterzel

Katrin Baumann

Frank Hoefer

Wolfgang Staffel

Ulrich Eiden

Stefan Kaeshammer

Veronika Quaschning

Lembit Tuttelberg

Arnd Boettcher

A process for preparing an N-vinyl compound by vinylating a compound having at least one nitrogen atom (referred to hereinafter as compound for short) with acetylene, wherein

Method for the vinylation of amides

The invention relates to a catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol and to a process for preparing methyl mercaptans. The catalyst comprises active aluminum oxide on which an alkali metal tungstate and ammonium salts have been deposited.

Catalyst for the production of methyl mercaptan from methanol and hydrogen sulfide

A process for preparing N-alkenyl compounds by reacting the corresponding NH compounds with alkynes in the liquid phase in the presence of a catalyst, wherein the reaction is carried out in the presence of at least one stabilizer, and the use of stabilizers for increasing the selectivity in a process for preparing N-alkenyl compounds by reacting the corresponding NH compounds with alkynes in the liquid phase in the presence of a catalyst.

Stabilizers for use in NVP synthesis

In a process for preparing trialkoxysilanes by reaction of silicon metal with an alcohol in an inert solvent in the presence of a copper catalyst, the copper catalyst used is a copper salt whose anion contains at least one nonhydrolyzable fluorine atom, or a mixture thereof with other salts.

Fluorinated copper salts as catalysts for the synthesis of trialkoxysilanes

Trialkoxysilanes are prepared by reacting silicon metal with an alcohol in an inert solvent in the presence of a copper catalyst by a process in which the copper catalyst contains copper(II) oxide having a BET surface area of &gE;10 m /g. Furthermore, this copper catalyst is used for the preparation of trialkoxysilanes by reacting silicon metal with an alcohol.

Freshly precipitated CuO as catalyst for the trialkoxysilane synthesis

In an extraction process for isolating trimethoxysilane (TMS) from a TMS/methanol mixture by formation of two phases, namely a TMS-rich extract phase and a methanol-rich raffinate phase, by addition of one or more methanol-soluble inorganic and/or organic salts and, if desired, an additional nonpolar organic solvent and subsequent phase separation, the amount of salt added is selected so that the weight ratio of trimethoxysilane to methanol in the extract phase is at least 94% by weight:6% by weight (normalized to 100% by weight). The use of one or more inorganic salts in an extraction process for isolating trimethoxysilane from a trimethoxysilane/methanol mixture is also claimed.

Growing community of inventors

Darmstadt, Germany

Alexandra Brand