Basf Se Corporation

Christian Raith

Marco Hartmann

Tim Blaschke

Peter Zurowski

Nicolai Tonio Wörz

Wolfgang Fischer

Ulrich Hammon

Klaus Joachim Mueller-Engel

Rocco Paciello

Claus Hechler

Klaus Joachim Müller-Engel

Ortmund Lang

Marta Zajaczkowski-Fischer

Thomas Walter

Friedrich-Georg Martin

Karolin Geyer

Christof Kujat

Nikolaus Nestle

Ann-Kathrin Marguerre

Murat Cetinkaya

Marek Pazicky

Hans-Juergen Bassler

Ansgar Schaefer

Eduard Schreiner

Reiner Weiler

Daher Michael Badine

Michael Schafranka

Raphael Heinrich Brand

A process for continuously preparing a butyl acrylate HC&#x2550;CH&#x2014;C(&#x2550;O)OR, with R=n-butyl or isobutyl, wherein aqueous 3-hydroxypropionic acid is converted under dehydrating and esterifying conditions in the presence of the corresponding butanol R&#x2014;OH in a reactor with a rectification column and butyl acrylate formed, unconverted butanol and water used and formed are distilled off overhead as a ternary azeotrope, after separation into a liquid aqueous phase and liquid organic phase each of the aqueous and organic phases is at least partly discharged, and the organic phase comprising the butyl acrylate and the butanol is subjected to distillative separation.

Process for continuously preparing n-butyl acrylate or isobutyl acrylate

The invention relates to a process for dehydrating aqueous 3-hydroxypropionic acid to acrylic acid in the liquid phase, wherein aqueous acrylic acid is removed continuously from the liquid phase and the aqueous 3-hydroxypropionic acid and/or the liquid phase have a high content of oligomeric 3-hydroxypropionic acid.

Method of dehydrating 3-hydroxypropionic acid to form acrylic acid

A composition for the immediate stopping of a free-radical polymerization comprises a) an inhibitor for the free-radical polymerization selected from among phenothiazines, b) an aprotic solvent and c) an ionic liquid. It serves to stabilize free-radically polymerizable monomers against free-radical polymerization. For the immediate stopping of free-radical polymerizations, the composition is added to a free-radically polymerizing system.

Composition for the immediate stopping of a free-radical polymerization

The present invention relates to a process for treating secondary components obtained in acrolein and/or (meth)acrylic acid production, comprising the steps of: The present invention further relates to a plant () for treating the secondary components obtained in acrolein and/or (meth)acrylic acid production.

Process and plant for treatment of secondary components obtained in acrolein and/or (meth)acrylic acid production

The invention relates to a process for dehydrating aqueous 3-hydroxypropionic acid to acrylic acid in the liquid phase, wherein aqueous acrylic acid is removed continuously from the liquid phase and the liquid phase comprises an inert organic solvent 1.

Method for the dehydration of 3-hydroxypropanoic acid to form acrylic acid

A process for preparing acrylic acid from ethylene oxide and carbon monoxide, in which ethylene oxide is carbonylated in an aprotic solvent with carbon monoxide in the presence of a cobalt catalyst system to give poly-3-hydroxypropionate, the cobalt content in the poly-3-hydroxypropionate formed is reduced with the aid of water and/or an aqueous solution as a precipitation and/or wash liquid, and the poly-3-hydroxypropionate is subsequently split by thermolysis to give acrylic acid.

Process for preparing acrylic acid from ethylene oxide and carbon monoxide

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Mannheim, Germany

Christian Raith