Creanova, Inc.

Degussa Aktiengesellschaft

Huels Aktiengesellschaft

Evonik Degussa Gmbh

Frank Bauer

Chitoor S Subramaniam

Marcel Feld

Manfred Neumann

Wolfgang Kleemiss

Christoph Theis

Uwe Prange

Marianne Omeis

Dirk Roettger

Guenther Koehler

Thomas Weihrauch

Volker Brehme

Silvia Herda

Wilfried Latz

Kathrin Salwiczek

Johanna Elisabeth Bauer

Elke Fiebig-Bauer

Franz Rudolf Bauer

Dirk Röttger

The invention relates to a process for preparing substituted or unsubstituted 1,7-diolefins by hydrodimerizing non-cyclic olefins having at least two conjugated double bonds in the presence of a reducing agent and of a catalyst, wherein the catalyst used is a metal-carbene complex.

Method for producing dienes by hydrodimerization

The invention relates to a polymer composition which is characterized in that it comprises a mixture (A) consisting of formula (A1) and/or formula (A2), phenolic resin (B) and a stabilizer (C) in the form of a HALS compound.

Polymer composition comprising phenolic resin

The invention relates to a continuous process for producing a reactive polymer based on compounds according to the structures (A1) and/or (A2) and phenolic resin in an extruder and to the reactive polymer produced according to said process and the use thereof for producing composite materials.

Continuous process for producing a reactive polymer

Transition metals may be recovered from a salt-containing mixture containing at least one transition metal compound, salts, and organic compounds by separating from the salt-containing mixture a mixture of the transition metal compound and the salts. This mixture, together with any organic impurities, is introduced into a combustion zone, and the flue gas/salt mixture leaving the combustion zone is quenched with water. The combustion residue, containing the transition metal, is separated from the resulting quench solution, dried, and converted to fresh catalyst.

Process for recovering catalyst transition metals from salt-containing reaction mixtures

A process for preparing malonic diesters by carbonylation of haloacetic esters and reaction with monohydric alcohols and a base in the presence of a transition metal catalyst, preferably a catalytic cobalt carbonyl complex, using a stirred reactor with one or more internal heat exchangers. The stirred reactor preferably contains a sparging stirrer.

Process for preparing malonic diesters in a reactor with internal heat exchangers

Process for preparing amino derivatives of C-H-acid compounds

Substituted propenoates are prepared by eliminating an alcohol from a substituted malondialdehyde acetal, optionally in the presence of a homogeneous or heterogeneous catalyst.

Substituted propenoates and processes for the preparation thereof

A process for the preparation of a 2-methyl-1,3-dicarboxylate by reaction of a 1,3-dicarboxylate with formaldehyde and hydrogen, where, based on 1 mol of dicarboxylate, from 1.0 to 2.0 mol of formaldehyde are used, and either the reaction mixture or 2-hydroxymethyl-2-methyl-1,3-dicarboxylate isolated therefrom as by-product are subjected to thermolysis at temperatures of from 50&deg; C. to 300&deg; C.

Process for the preparation of 2-methyl-1,3-dicarboxylates

A process directed to the preparation of acetals of malondialdehyde by reacting alkylvinyl ethers or esters with ortho formates in the gas phase with a heterogeneous catalyst.

Process for preparing acetals of malondialdehyde

A process directed to the preparation of 2-substituted and 2,2-disubstituted acetals of malondialdehyde from ortho formates and substituted vinyl ethers in the presence of an acidic catalyst.

Process for preparing substituted acetals of malondialdehyde

Process for the preparation of malondialdehyde-derivatives by reacting vinylesters with orthoesters in the presence of a precious metal catalyst.

Process for the preparation of malondialdehyde-derivatives

Process for the preparation of heterocycles by reacting 2-substituted acetals of malondialdehyde with a reactant selected from hydroxylamines and their salts, hydrazines and their salts, formamid, amidines and their salts, guanidines and their salts, aminoguanidines and their salts, nitroguanidine and their salts, O-alkyl-isoureas and their salts, O-cycloalkyl-isoureas and their salts, O-aralkyl-isoureas and their salts, O-aryl-isoureas and their salts, S-alkyl-isothioureas, S-cycloalkyl-isothioureas, S-aralkyl-isothioureas, S-arylisothioureas, S-alkyl-isothiouronium salts, S-cycloalkyl-isothiouronium salts, S-aralkyl-isothiouronium salts, S-aryl-isothiuronium salts, thiourea and urea.

Process for preparing heterocycles

A method for preparing 1,3-dioxane compounds of the formula (I): ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, represent hydrogen or a hydrocarbon radical; and X.sup.1 and X.sup.2, independently of one another, represent an electronegative groups, which method entails reacting a bis(hydroxymethyl) compound of the formula (II): ##STR2## in which X.sup.1 and X.sup.2 each, independently of one another, are as defined above, with an orthocarboxylic acid ester of the formula R.sup.4 --C(OR.sup.5).sub.3 (III), in which R.sup.4 represents hydrogen or a hydrocarbon radical and R.sup.5 represents a hydrocarbon radical, and with an aldehyde or ketone of the formula R.sup.1 --CO--R.sup.2 (IV), in which R and R each, independently of one another, are as defined above.

Method for preparing 1,3-dioxane compounds

A process for nitrosating C-H-acidic compounds. The process substantially avoids producing polluted wastewater.

Process for nitrosation of C-H-acidic compounds

The invention relates to a process for the preparation of aminomalonic acid esters and optionally their salts by the catalytic hydrogenation of a substituted malonic acid ester in an inert solvent, and optionally by the addition of an acid to the hydrogenation mixture. The process comprises carrying out the hydrogenation in the presence of a solid dehydrating agent and a solvent or solvent mixture in which the aminomalonic acid ester salt is substantially insoluble.

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Bonn, Germany

Frank Bauer