Sasol Technology (pty) Limited

Other

Oxeno Olefinchemie Gmbh

Celanese Chemicals Europe Gmbh

Solvent Innovation Gmbh

Peter Wasserscheid

John Thomas Dixon

David Hedley Morgan

Hulisani Maumela

Fiona Millicent Hess

David Shane McGuinness

Annette Bollman

Wilhelm Keim

Franz Nierlich

Dirk Roettger

Hans Bohnen

Udo Kragl

Carsten Bolm

Joerg Krissmann

Jacobus Johannes Cronje Grove

Sonja Fliege

Roy Van Hal

Nicole Kaftzik

Dietmar Hoff

The invention relates to the implementation of enzyme-catalysed reactions in the presence of ionic liquids.

Enzyme catalysis in the presence of ionic liquids

The invention provides a mixed heteroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.

Trimerisation and oligomerisation of olefins using a chromium based catalyst

The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is nitrogen and at least two heteroatoms are not the same. The invention also provides a multidentate mixed heroatomic ligand for an oligomerization of olefins catalyst, which ligand includes at least three heteroatoms. At least one heteroatom may be nitrogen and at least 2 heteroatoms may not be the same.

The present invention relates to a process for the liquid-liquid extraction or liquid-gas extraction of mixtures of organic compounds, in which one or more components of the mixture are completely or partly extracted by means of a phase comprising at least one ionic liquid.

Method for separation of substances by extraction or by washing them with ionic liquids

The invention provides a mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms, of which at least one heteroatom is sulfur and at least 2 heteroatoms are not the same. The invention also provides a multidentate mixed heteroatomic ligand for an oligomerisation of olefins catalyst, which ligand includes at least three heteroatoms of which at least one is a sulfur atom. The ligand may also contain, in addition to sulfur, at least one nitrogen or phosphorous heteroatom.

Low melting ionic compounds of the general formula (cation) (R'SO) in which R&#x2032; is a branched or linear, saturated or unsaturated, aliphatic or alicyclic functionalized or non-functionalized hydrocarbon chain with 3-36 carbon atoms are provided. These compounds can serve as ionic liquids, e.g. as solvents or solvent additives in chemical reactions, as extraction agents or as heat carriers. The compounds comprise a cation and anionic sulfate ester.

Ionic liquids

The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.

Method for the production of aldehydes

The invention relates to chiral ionic liquids of the general formula[A][Y],whereby n=1 or 2, the anion [Y]is the anion of an organic or inorganic proton acid and the cation [A]an optically active organic ammonium cation with up to 50 carbon atoms, at least one chirality center and at least one functional group that can produce a coordination by forming hydrogen bridges or by providing free electron pairs. At least one chirality center is provided with a distance of up to 5 atomic bonds from the functional group. The invention also relates to a method for producing said chiral ionic liquids and to the use thereof in methods for the asymmetric synthesis, the asymmetric catalysis and for separating racemates.

Growing community of inventors

Cologne, Germany

Peter Wasserscheid