Arkema France

Hoechst Aktiengesellschaft

Basf Aktiengesellschaft

Ciba Specialty Chemicals Corporation

Degussa - Huls Ag

Wolfgang Holderich

Jean-Luc Dubois

Christophe Duquenne

Dieter Heinz

Marcus Paczkowski

Thomas Kaiser

Dietrich Arntz

Werner Bertleff

Laurent Chassot

Eric Lacroix

Jacques Kervennal

Francois Fajula

Serge Hub

Markus Brandhorst

François Fajula

Wilm Eickelberg

Francesco DiRenzo

Georg Philip Heitmann

KoDieter

Nadja Rohrlich

Francesco Di Renzo

The invention relates to a method for producing acrylic acid in one step by an oxydehydration reaction of glycerol in the presence of molecular oxygen. The reaction preferably carried out in gaseous phase in the presence of a suitable catalyst.

Method for producing acrylic acid from glycerol

The present invention relates to a process for the preparation of lauryllactam in which a Beckmann rearrangement of cyclododecanone oxime is carried out. Said process is carried out in the gas phase at a temperature of between 180 and 450&#xb0; C. in the presence of a microporous material having a three-dimensional inorganic main structure composed of tetrahedra connected via a common edge, called zeolite.

Process for the synthesis of lauryllactam (L12) by gas phase catalytic rearrangement of cyclododecanone oxime

The present invention relates to a process for manufacturing acrolein by gas-phase dehydration of glycerol in the presence of strongly acidic solid catalysts with a Hammett acidity Hof between &#x2212;9 and &#x2212;18 and preferably between &#x2212;10 and &#x2212;16.

Process for dehydrating glycerol to acrolein

The present invention relates to a process for manufacturing acrolein by dehydration of glycerol in the presence of molecular oxygen. The reaction is performed in the liquid phase or in the gas phase in the presence of a solid catalyst. The addition of oxygen makes it possible to obtain good glycerol conversion by inhibiting the deactivation of the catalyst and the formation of by-products.

A method is disclosed of producing .epsilon.-caprolactam by the Beckmann rearrangement of cyclohexanone oxime using (B) .beta. zeolites as catalyst.

Method of producing .epsilon.-caprolactam

A molecular sieve, which contains in all, or only in some, of its cavities colorant molecules as well as a modifier which is covalently bound to said molecular sieve and which reduces its pore diameter, a process for its preparation as well as its use as pigment for coloring high molecular weight organic materials, preferably biopolymers and plastic materials, glasses, ceramic products, for formulations of decorative cosmetics, for the preparation of paint systems, preferably automotive lacquers, printing inks, dispersion paints and color filters as well as materials comprising the novel molecular sieves.

Colourant-loaded molecular sieve

A process for preparing 3-oxyalkylpropan-1-ols by catalytic hydrogenation of 1,3-dioxanes with catalysts comprising a hydrogenation-active component on an acid support.

Process for preparing 3-oxyalkylpropan-1-ols

A process for preparing 3-oxyalkylpropan-l-ols by catalytic hydrogenation of 1,3-dioxanes with catalysts comprising a hydrogenation-active component on an acid support.

A process for preparing 4-oxa-amines comprising reacting 1,3-dioxanes with ammonia and hydrogen in the presence of hydrogenation catalysts.

Process for preparing 4-oxa-amines

Dialkoxyethenes of the formula ##STR1## where R.sup.1 to R.sup.4 are identical or different and are each straight-chain or branched alkyl or cycloalkyl or R.sup.2 and R.sup.3 may furthermore be hydrogen, aryl or alkenylaryl, and the aromatic may be substituted by further radicals, such as alkyl, alkoxy or halogens, are prepared by a process in which an alcohol of the formula R.sup.4 OH or R.sup.5 OH is eliminated from a trialkoxyethane of the formula (II) ##STR2## where R.sup.1 to R.sup.4 have the above meanings and R.sup.5 is straight-chain or branched alkyl or cycloalkyl, in the presence of a zeolite and/or a phosphate and/or phosphoric acid or boric acid on a carrier and/or an acidic, untreated metal oxide as a catalyst. Zeolites of the pentasil type are preferably used as catalysts.

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Frankenthal, Germany

Wolfgang Holderich