Basf Se Corporation

Basf Aktiengesellschaft

Markus Siegert

Neven Lang

Eckhard Stroefer

Achim Stammer

Christoph Sigwart

Johann-Peter Melder

Torsten Mattke

Thomas Krug

Matthias Frauenkron

Eckhard Ströfer

Holger Evers

Thorsten Friese

Roderich Röttger

Jan Nouwen

Jochem Henkelmann

Gerhard Olbert

Oliver Bey

Markus Weber

Till Gerlach

Hans Hasse

Heiner Schelling

Joachim Thiel

Michael Bock

Thorsten Johann

Regina Vogelsang

Laszlo Szarvas

Hans-Juergen Pallasch

Heike Becker

Alexander Hauk

Filip Nevejans

Veronika Wloka

Christian Miller

Daniel Breuninger

Oliver Huttenloch

Martin Fiene

Tobias Kortekamp

Franz Niklaus Windlin

Ellen Dahlhoff

Patrick Deck

Sergej Blagov

Katrin Klass

Tilmann Steinmetz

Thomas Grützner

Michael Ott

Till Gerlack

Julia Kirschbaum

The invention provides a process for preparing diphenylmethanediamine, comprising the steps of:

Two-stage process for cost-effective deposition of homogeneous catalysts in MDA synthesis

Processes are disclosed comprising: (a) reacting an aqueous formaldehyde solution in a reactor in the presence of a suitable catalyst to obtain a reaction product mixture comprising trioxane, formaldehyde and water; (b) distilling the reaction product mixture to form a top stream comprising crude trioxane; and (c) treating the top stream in one or more additional stages to form pure trioxane; wherein an aqueous sidestream is drawn off during the distilling of the reaction mixture.

Trioxane production method wherein a side aqueous flow is deducted at a first distillation stage

An integrated process for preparing trioxane from formaldehyde.

Integrated method for the preparation of trioxane from formaldehyde

A process for preparing polyoxymethylene homopolymers or copolymers () by homopolymerization or copolymerization of trioxane, starting from methanol (), in which

Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol

A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by

Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification

A process for separating trioxane from a feed stream I comprising formaldehyde, trioxane and water, in which

Method for separating tioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification

The invention provides a process for preparing diphenylmethanediamine, comprising the steps of

Process for preparing diphenylmethanediamine

The invention relates to a process for the preparation of triamides from ammonia and amido-dichlorides.

Process for the preparation of triamides from ammonia and amido-dichlorides

Processes comprising: providing a reactive distillation column having an upper region, a middle region and a lower region; feeding ethylene glycol and an aqueous formaldehyde solution into the reactive distillation column in the middle region of the reactive distillation column; reacting the ethylene glycol and the aqueous formaldehyde solution in the reactive distillation column in the presence of a catalyst to form dioxolane; removing a product stream comprising dioxolane in an amount of at least 75% by weight from the upper region of the reactive distillation column; and removing a bottom stream comprising one or more components having boiling points higher than dioxolane from the lower region of the reactive distillation column.

Method for the production of dioxolane

Process for distillatively separating a mixture containing a vinyl ether of the general formula (I)R&#x2014;O&#x2014;CH&#x2550;CH&#x2003;&#x2003;(I)and alcohol of the general formula (II)R&#x2014;OH&#x2003;&#x2003;(II)in which Rand Rare each independently a saturated or unsaturated, aliphatic or cycloaliphatic radical having from 2 to 10 carbon atoms, and in which the alcohol (II) has a boiling point which is at least 1&#xb0; C. higher, measured at or extrapolated to 0.1 MPa abs, than the vinyl ether (I), by

Method for the distillative separation of a mixture containing vinyl ether and alchol

Preparation of ethyleneamines by reacting monoethanolamine (MEOA) with ammonia in the presence of a catalyst in a reactor (1) and separating the resulting reaction product, where ethylenediamine (EDA) obtained in the separation is reacted in a separate reactor (2) in the presence of a catalyst to give diethylenetriamine (DETA), and the resulting reaction product is passed to the separation of the reaction product resulting from reactor 1.

Method for producing ethyleneamines

Process for the preparation of ethylenamines, in particular diethylenetriamine (DETA), by continuous reaction of ethylenediamine (EDA) in the presence of a heterogeneous catalyst, where the reaction is carried out in a reaction column.

Method for producing ethylene-amines

A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor () having heat-exchange plates () which are arranged in the longitudinal direction of the reactor () and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities () for the heat transfer medium to the heat-exchange plates () and also gaps () between heat-exchange plates () in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

Method for producing formaldehyde

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Heidelberg, Germany

Markus Siegert