Basf Aktiengesellschaft

Basf Se Corporation

Ralf Noe

Klemens Massonne

Klaus Halbritter

Matthias Maase

Wolfgang Siegel

Hartmut Hibst

Michael Bartsch

Veit Stegmann

Michael Becker

Oliver Huttenloch

Miguel Flores

Klaus Ebel

Gerd Kaibel

Boris Breitscheidel

Andreas Henne

Mark Duda

Rainer Papp

Frank Haese

Martin Volland

Kai Michael Exner

Eike Johannes Bergner

Melanie Maas-Brunner

Axel Salden

Verena Seitz

Process for preparing aminodihalophosphines, diaminohalophosphines, triaminophosphines, phosphorous ester diamides, aminophosphines, diaminophosphines, phosphorous ester amide halides and aminophosphine halides with elimination of an acid in the presence of an auxiliary base, wherein the auxiliary base

Method for the separation of acids from chemical reaction mixtures by means of ionic fluids

The invention relates to the acyl- and bisacylphosphine derivatives according to formula (I), wherein Y represents O, S, NR, N&#x2014;ORor N&#x2014;NRR, Z represents O, S, NR, N&#x2014;OR, N&#x2014;NRRor a free pair of electrons, and FG represents a leaving group and the remaining groups are defined as in the description. The invention further relates to a method for the production of the inventive derivatives and to their use. 

Acyl- and bisacylphosphine derivatives

A process for removing acids from reaction mixtures using an auxiliary base, in which the auxiliary base: combines with the acid to form a salt which is liquid at temperatures at which the product of value does not significantly decompose during the removal of the liquid salt, and the salt of the auxiliary base with the product of value or the solution of the product of value in a suitable solvent forms two immiscible liquid phases.

The invention relates to a process for preparing cyclohexanedicarboxylic acids or derivatives thereof, such as esters and/or anhydrides, encompassing the reaction of diene/maleic acid anhydride mixtures, in particular of butadiene/maleic acid anhydride mixtures or of mixtures of maleic acid anhydrides and C5-dienes to give alkyl-substituted or unsubstituted cyclohexenedicarboxylic acid anhydrides in the condensed phase, ester formation, and then hydrogenation to give the corresponding cyclohexanedicarboxylic acid derivative, and also to the use of the cyclohexanedicarboxylic acids or derivatives thereof prepared according to the invention as plasticizers for plastics.

Method for producing cyclohexane dicarboxylic acids and the derivatives thereof

A process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of an n-butene-containing hydrocarbon stream by means of oxygen-containing gases in a shell-and-tube reactor having two successive reaction zones, where the first, feed-side reaction zone contains at least one catalyst which is suitable for the oxydehydrogenation of n-butenes to 1,3-butadiene and the second, product-side reaction zone contains at least one catalyst which is suitable for the oxidation of 1,3-butadiene to maleic anhydride, is carried out using a shell-and-tube reactor which has at least one heat transfer medium circuit in the region of the first, feed-side reaction zone and at least one further heat transfer medium circuit in the region of the second, product-side reaction zone.

Method for producing maleic anhydride

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Mannheim, Germany

Ralf Noe