Basf Aktiengesellschaft

Basf Se Corporation

Basfaktiengesellschaft

Frank Hoefer

Hermann Bergmann

Volker Schliephake

Klaus Joachim Mueller-Engel

Maximilian Angel

Sylke Haremza

Dietmar Haering

Ulrich Jaeger

Reinhold Schwalm

Gerhard Wagenblast

Uwe Meisenburg

Harald Keller

Juergen Schroeder

Hans Hasse

Katrin Baumann

Norbert Asprion

Lothar Karrer

Regina Vogelsang

Gunter Lipowsky

Nick Gruber

Peter Zurowski

Cedric Dieleman

Steffen Rissel

Alexandra Brand

Iven Clausen

Arnd Boettcher

Provided is a process for preparing a (meth)acrylic ester (F) of an N-hydroxyalkylated lactam, in which a cyclic N-hydroxyalkylated lactam (L): where the structural variables as defined herein, in the presence of at least one metal salt of C-C-alkoxides (A), is esterified with (meth)acrylic acid (S) or transesterified with at least one (meth)acrylic ester (D), in which the metal salt of C-C-alkoxides (A) used as a catalyst is added in the absence of solvents and completely at the start of the reaction.

Catalytic process for preparing (meth)acrylic esters of N-hydroxyalkylated lactams

A process for catalytically preparing (meth)acrylic esters of N-hydroxyalkylated lactams and to the use thereof.

Process for preparing (meth)acrylates of C-alcohol mixtures, by reacting (meth)acrylic acid with an isomer mixture of C-alcohols composed of 2-propylheptanol as the main isomer and at least one of the C-alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, in the presence of at least one acidic catalyst and of at least one polymerization inhibitor and in the presence of a solvent which forms an azeotrope with water, the azeotrope is distilled off and condensed, and the condensate splits into an aqueous phase and an organic phase, wherein

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The claimed invention relates to a process for preparing (meth)acrylates of N-hydroxyalkylated amides, in which open-chain N-hydroxyalkylated amides are esterified with (meth)acrylic acid or transesterified with at least one (meth)acrylic ester in the presence of at least one heterogeneous catalyst selected from the group consisting of an inorganic salt and an enzyme.

Catalyzed preparation of (meth)acrylates of N-hydroxyalkylated amides

A process for preparing (meth)acrylic esters (F) of N-hydroxyalkylated imidazoles, wherein N-hydroxyalkylated imidazoles (I), 

Process for preparing (meth)acrylic esters of N-hydroxyalkylated imidazoles

Process for catalytically preparing (meth)acrylates of N-hydroxyalkylated lactams, and use thereof.

Catalytic process for preparing (meth)acrylates from N-hydroxyalkylated lactams

A process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer in an indirect heat exchanger, wherein a quaternary ammonium salt, a tertiary amine or a salt thereof with a Br&#xf8;nsted acid is added to the liquid mixture to reduce fouling.

Process for transferring heat to a liquid mixture comprising at least one (meth)acrylic monomer

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

An absorption medium for deacidifying fluid streams which has improved oxidation stability includes at least one aliphatic amine, and at least one non-hydroquinoid antioxidant. The absorption medium may be employed in deacidifying a fluid stream, in particular an oxygen-containing fluid stream, when the fluid stream is brought into intimate contact with the absorption medium in at least one absorption step.

Absorption medium and deacidification of fluid streams

A process for rectificatively separating an acrylic acid-containing liquid, by withdrawing an acrylic acid-rich stream from the rectification column above the feed point and polymerization-inhibiting the upper section of the rectification column by means of diacrylic acid.

Rectificative separation of an acrylic acid-containing liquid

A process for preparing and/or working up mixtures by (meth)acrylic acid and/or (meth)acrylic ester in the presence of at least one polymerization inhibitor and at least one oxygenous gas, which comprises metering in at least part of the oxygenous gas at an exit rate of at least 50 mm/s.

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Bad Duerkheim, Germany

Frank Hoefer