Basf Aktiengesellschaft

Basf Se Corporation

Jochen Petzoldt

Klaus Joachim Mueller-Engel

Martin Dieterle

Klaus Joachim Müller-Engel

Heiko Arnold

Signe Unverricht

Ulrich Cremer

Virginie Bette

Ulrich Hammon

Claus Hechler

Andreas Raichle

Hartmut Hibst

Otto Machhammer

Frank Rosowski

Volker Schliephake

Uwe Meisenburg

Wilhelm Ruppel

Andrea Misske

Götz-Peter Schindler

Christoph Adami

Hans Martan

Boris Breitscheidel

Goetz-Peter Schindler

Raimund Felder

Silke Berndt

Klaus Bott

Rolf-Dieter Becher

Klaus Harth

Andreas Tenten

Frieder Borgmeier

Ortmund Lang

Friederike Fleischhaker

Christoph Fleckenstein

Martin Kaller

Armin Diefenbacher

Eugene Scanlon

Matthias Dust

Bolette Urtel

Ulrich Jaeger

Kevin DeSantis

Catharina Horstmann

Thorsten Friese

Hermann Bergmann

Mathieu Blanchot

Martin Gärtner

Ulrik Stengel

Ritesh Nair

Tobias Johannes Korn

Steffen Maurer

Wolfgang Juergen Poepel

Jean-Marc Ballin

Ulrich Jäger

Tobias Hoefener

Frank Höfer

Florian Thomas

Wolfgang Juergen Popel

Klaus-Joachim Mueller-Engel

Wolfgang Jürgen PÖPEL

A process for preparing an ester of (meth)acrylic acid or a derivative thereof comprises reacting (meth)acrylic acid or a derivative thereof with glycerol carbonate at a reaction temperature of 10 to 150&#xb0; C. without a solvent in the presence of at least one enzyme catalyzing the esterification reaction.

Process for producing (meth)acrylates from glycerol carbonate

A lubricant composition having improved non-Newtonian viscometrics includes at least 85 weight percent of a base oil and 1 to 15 weight percent of a lubricant additive. The additive itself includes 10 to 80 weight percent of a diluent oil and 30 to 80 weight percent of a random co-polymeric viscosity index improver. The viscosity index improver is the free-radical polymerization product of at least 5 to 15 weight percent methyl methacrylate and 5 to 95 weight percent of a C-Calkyl (meth)acrylate. The additive is formed using a method that includes the step of providing the diluent oil, the methyl methacrylate, the C-Calkyl (meth)acrylate, and a free-radical initiator. The method also includes the steps of flowing the diluent oil into a reactor, flowing the methyl methacrylate and the C-Calkyl (meth)acrylate into the reactor independently from the free-radical initiator, and flowing the free-radical initiator into the reactor.

Lubricant composition having improved non-Newtonian viscometrics

A process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed, in which a heterogeneously catalyzed partial gas phase oxidation of an organic compound had been performed beforehand in a preceding fixed catalyst bed comprising Mo-comprising multielement oxide active compositions to form a steam-comprising product gas mixture, in which, before the recharge, solid deposit which had been deposited on the tube inner walls and comprises molybdenum oxide and/or molybdenum oxide hydrate is brushed away with the aid of a brush.

Process for recharging the reaction tubes of a tube bundle reactor with a new fixed catalyst bed

A continuous process for preparing (meth)acrylates of C-alcohol mixtures by reaction of glacial (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, and the use of a diester of dicarboxylic acids which have been esterified with N-oxyl-containing compounds as polymerization inhibitors in such a process.

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In a process for preparing (meth)acrylic esters (E) of polyalkoxy-containing alcohols which comprises reacting polyalkoxy-containing alcohols (P) of formula (I) where

Preparation of (meth)acrylic esters of polyalkoxy-containing alcohols

The invention relates to a process for preparing (meth)acrylic esters by esterifying (meth)acrylic acid or transesterifying at least one (meth)acrylic ester with at least one compound comprising at least one OH group in the presence of a heterogeneous catalyst comprising at least one inorganic salt, wherein the esterification or transesterification is performed in the presence of 300 to 3000 ppm of water based on the total weight of the reaction mixture.

Process for preparing (meth)acrylic esters

A process for preparing (meth)acrylates of C-alcohol mixtures by reacting (meth)acrylic acid with a C-alcohol mixture in the presence of at least one acidic catalyst and of at least one polymerization inhibitor and in the presence of a solvent which, with water, forms an azeotrope in which the esterification is performed in a reactor with a circulation evaporator, the azeotrope is distilled off and condensed, and the condensate splits into an aqueous phase and an organic phase, wherein the C-alcohol mixture has a mean degree of branching (iso index) of 2.8 to 3.7.

A process for preparing an organic target compound by heterogeneously catalyzed gas phase partial oxidation of an organic precursor compound with molecular oxygen in two oxidation reactor lines operated in parallel and removal of the target compound from the mixture of the product gas streams in a workup line, wherein the catalysts charge of one of the oxidation lines comprises a portion of catalyst over which the heterogeneously catalyzed gas phase partial oxidation has already been carried out for longer than over the portions of catalyst of the catalyst charge of the other oxidation reactor line.

Process for preparing at least one organic target compound by heterogeneously catalyzed gas phase partial oxidation

A process for producing geometric shaped catalyst bodies K whose active material is a multielement oxide of stoichiometry[BiZO][BiMoFeZZZZZO],

Process for producing geometric shaped catalyst bodies

A process for preparing silylated monocarboxylic acids by reacting C-C-monocarboxylic acids with halosilanes of the general formula (I)SiHalR&#x2003;&#x2003;(I)in which

Process for silylating monocarboxylic acids

A process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid over a fixed catalyst bed disposed in a tube bundle reactor cooled by a heat exchange medium, wherein the temperature of the heat exchange medium is &#x2267;290&#xb0; C. and the temperature of that reactor plate surface which faces the reaction gas entry mixture and the temperature of the reaction gas entry mixture itself are &#x2266;285&#xb0; C.

Process for starting-up a heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid or of methacrolein to methacrylic acid

The present invention relates to a process for charging a reactor with a catalyst, to the resulting charged reactors, and to the use thereof for carrying out catalytic gas phase reactions.

Charging of a reactor

A process for preparing at least one partial oxidation and/or ammoxidation product of a hydrocarbon by partially dehydrogenating at least one saturated hydrocarbon H under heterogeneous catalysis and using the resulting product gas mixture A, which comprises the partially dehydrogenated hydrocarbon H, as such or in modified form for heterogeneously catalyzed partial oxidation and/or ammoxidation of the partially dehydrogenated hydrocarbon present in the product gas mixture A, said process including at least one mechanical separating operation inserted between the product gas mixture A and the heterogeneously catalyzed partial oxidation and/or ammoxidation.

Preparation of at least one partial oxidation and/or ammoxidation product of a hydrocarbon

A process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid in the absence of propane as an inert diluent gas, in which, in the starting reaction gas mixture, cyclopropane is substantially avoided as an impurity and crude propylene is used additionally as a propylene source.

Process for heterogeneously catalyzed partial gas phase oxidation of propylene to acrylic acid

Growing community of inventors

Weisenheim am Berg, Germany

Jochen Petzoldt