Inventor

FRIDAG DIRK

DE91 patents

⚠️ This page may combine multiple inventors who share the name “FRIDAG DIRK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

FRIDAG DIRK

EVONIK DEGUSSA GMBH

Purifying organophosphorus compounds contaminated with chlorine

Benzene-based diphosphine ligands for alkoxycarbonylation

Monophosphine compounds and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

Ferrocene-based compounds and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

Ferrocene-based compounds and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

Method for obtaining alcohols from aldehydes

Method for obtaining alcohols from aldehydes III

Method for obtaining alcohols from aldehydes II

Influencing the viscosity of N-butene-based ester mixtures by controlled use of ethene in the preparation of the ester precursors

Unsymmetric bisphosphite

Phosphine ligand and palladium catalysts based thereon for the alkoxycarbonylation of ethylenically unsaturated compounds

Bisphosphites having 2,4-tert-butylphenyl units and use thereof as ligands in hydroformylation

Process for the alkoxycarbonylation of olefins in a medium having a low Brønsted acid concentration

Mixture of different asymmetrical bisophosphites and use thereof as a catalyst mixture in hydroformylation

Bisphosphites having an unsymmetric outer biphenol unit

Method for hydroformylating cyclooctadiene using 4-([1,1′:3′,1″-terphenyl]-2′-yloxy)-S-dinaphtho[2,1-D:1′,2′-F][1,3,2]dioxaphosphepine

Mixtures of constitutionally isomeric bisphosphites

Process for the alkoxycarbonylation of ethylenically unsaturated compounds with monophosphine ligands

Method for producing 6-chlorodibenzo[D,F] [1,3,2] dioxaphosphepin

EVONIK OPERATIONS GMBH

Process for preparing carboxylic acids or salts thereof from hydrocarbons

Diphosphites having an open, 2,4-methylated outer unit

Process for preparing C5 aldehydes

Diphosphites with an open, 3-methylated outer unit

Mixture of bisphosphites having an open and a closed outer unit and the use thereof as a catalyst mixture in hydroformylation

Diphosphites having an open and a closed 2,4-methylated outer unit

Bisphosphite ligands based on benzopinacol with an open outer unit

Process for preparing aldehydes and separation of the catalyst system by membrane separation

Bisphosphite ligands based on benzopinacol

DYBALLA KATRIN MARIE

Bisphosphites having an unsymmetric outer biphenol unit

Monophosphite ligands having a tert-butyloxycarbonyl group

Process for catalytic preparation of aldehydes from olefins using monophosphite mixtures

Electrochemical coupling of two phenols which differ in their oxidation potential

Mixture containing a monophosphite ligand and the use thereof for catalysis of a hydroformylation reaction

OXENO OLEFINCHEMIE GMBH

Method for producing aldehydes by means of hydroformylation of olefinically unsaturated compounds, said hydroformylation being catalyzed by unmodified metal complexes in the presence of cyclic carbonic acid esters

Method for the hydroformylation of olefinically unsaturated compounds, especially olefins, in the presence of cyclic carbonic acid esters

Method for producing organoacylphosphites

FRIDAG DIRK

Stable long-term method for producing C5-aldehydes

Control of the viscosity of reaction solutions in hydroformylation processes

Method for producing 6-chlorodibenzo[d,f] [1,3,2]-dioxaphosphepin

KAIZIK ALFRED

Process for preparing α,β-unsaturated C10-aldehydes

Producing α,β-unsaturated aldehydes by means of a reaction mixing pump

EVONIK OXENO GMBH

Carbonylation method by adding secondary sterically hindered amines

Method for producing trivalent organophosphorus compounds

CHRISTIANSEN ANDREA

Mixture of bisphosphites and use thereof as a catalyst mixture in hydroformylation

FRANKE ROBERT

Energy efficient synthesis of aliphatic aldehydes from alkenes and carbon dioxide

LUEKEN HANS-GERD

Process for preparing C5 aldehyde mixtures with a high n-pentanal content

GEILEN FRANK

Preparation of high-quality oxo process alcohols from inconstant raw material sources

KREIDLER BURKARD

Method for the preparation of biphephos

LUEKEN HANS GERD

Optimized separation technique for work-up of homogeneously catalysed hydroformylation mixtures

HAMERS BART

Jet loop reactor having nanofiltration