Abstract: The present invention relates to a method for determining the functionality and integrity of depth filter sheets and depth filter sheet systems comprising inorganic layered double hydroxide for contaminant removal in biotechnological processes.

Abstract: The present invention relates to a method for determining the functionality and integrity of depth filter sheets and depth filter sheet systems comprising inorganic layered double hydroxide for contaminant removal in biotechnological processes.

Abstract: The present invention relates to a depth filter layer with inorganic layer double hydroxide, a method for production thereof, a filtration device containing this, a method for the separation of at least one contaminant from at least one target product in a liquid medium by means of at least one upstream depth filter layer and the use of the depth filter layer for removal of contaminants. The depth filter layer selectively retains contaminants such as nucleic acids, while target proteins of biotechnological processes are transmissible into the filtrate.

Abstract: The present invention relates to a depth filter layer with inorganic layer double hydroxide, a method for production thereof, a filtration device containing this, a method for the separation of at least one contaminant from at least one target product in a liquid medium by means of at least one upstream depth filter layer and the use of the depth filter layer for removal of contaminants. The depth filter layer selectively retains contaminants such as nucleic acids, while target proteins of biotechnological processes are transmissible into the filtrate.

Abstract: The invention relates to dicopper(I) oxalate complexes stabilized by neutral Lewis bases, such as alkenes or alkynes, and to the use of dicopper(I) oxalate complexes as precursors for the deposition of metallic copper, in which the neutral Lewis bases used are alkynes, alkenes, triarylphosphines, CO or isonitriles.

Abstract: Disclosed are compounds of formula (I) which compounds are useful as cocatalysts in olefinic polymerisation reactions, e.g., as Ziegler-Natta catalysts.

Abstract: The invention relates to dicopper(I) oxalate complexes stabilised by neutral Lewis bases, such as alkenes or alkynes, and to the use of dicopper(I) oxalate complexes as precursors for the deposition of metallic copper, in which the neutral Lewis bases used are alkynes, alkenes, triarylphosphines, CO or isonitriles.

Abstract: The invention relates to dicopper(I) oxalate complexes stabilised by neutral Lewis base components and to the use thereof as precursors for the deposition of metallic copper. The neutral Lewis bases used are alkynes or alkenes containing at least one silyl or ester group, or nitrites, saturated or unsaturated nitrogen ligands, phosphites, trialkyl-phosphines or oxygen- or sulfur-containing ligands.

Abstract: The invention relates to novel immobilisable imidazolium salts of the general formulae (I) and (II) which contain a group R carrying SiR?n(OR?)3?n on one of the two nitrogen atoms and a sterically demanding cyclic hydrocarbon radical on the other of the two nitrogen atoms of the heterocyclic ring. The invention furthermore relates to the use of the compounds of the general formulae (I) and (II) as starting materials for immobilisable catalyst ligands, catalyst precursors and catalysts, and to the use as solvents in organic, organometallic and transition metal-catalysed synthesis and as catalysts in organic synthesis.

Abstract: The invention relates to the process for the preparation of N,N-disubstituted imidazolium salts, N-heterocyclic carbene ligands and ruthenium catalysts containing N-heterocyclic carbene ligands, i.e. compounds of the general formulae (I) and, (II), compounds of the general formulae (III) and (IV) and compounds of the general formulae (V) and (VI), immobilised on inorganic oxide supports. The invention furthermore relates to the use of the immobilised compounds of the general formulae (I-IV) in organic, organometallic or transition metal-catalysed synthesis and to the use of the compounds of the general formulae (V) and (VI) as catalysts in organic and organometallic synthesis, in particular for C—C coupling reactions, such as olefin metathesis.

Abstract: The present invention relates to novel oxygen-containing organoaluminium complexes of the general formula (I) in which R1, independently of one another, denote branched or unbranched C1-C7-alkyl, -cycloalkyl, -alkenyl, -cycloalkenyl, -aryl or -alkynyl; R2 denotes unsubstituted, mono- or polyalkylated and/or mono- or polyfluorinated aromatic hydrocarbons from the group R3, R4, independently of one another, denote CH2, CF2 or C(R1)2; independently of one another, m denotes 0, 1, 2 n denotes 0, 1, 2. These compounds can serve as cocatalysts in olefinic polymerisation reactions. In particular, they can be employed for the preparation of novel Ziegler-Natta catalysts having improved properties, in particular having higher activities compared with conventional Ziegler-Natta catalysts with AlEt3, as cocatalyst, or of novel coordination catalyst systems which have higher activities than conventional Ziegler-Natta catalysts, even at low temperatures, such as 60° C., and a pressure of 2 bar.

Abstract: The present invention relates to a process for the preparation of co- and terpolymers from olefins having improved properties. In particular, the invention relates to the preparation of ethylene-propene copolymers (EPR), ethylene-propylene-diene terpolymers (EPDM) and further copolymers of ethylene-propene, 1-olefins and dienes having elastomeric properties which are improved by their structural makeup. In particular, this is a process for the preparation of EPR and EPDM rubbers by polymerisation of ethylene and propene, optionally ethylidenenorborne as diene at temperatures between ?20 to 150° C.

Abstract: The invention relates to dicopper(I) oxalate complexes stabilised by neutral Lewis base components and to the use thereof as precursors for the deposition of metallic copper. The neutral Lewis bases used are alkynes or alkenes containing at least one silyl or ester group, or nitrites, saturated or unsaturated nitrogen ligands, phosphites, trialkyl-phosphines or oxygen- or sulfur-containing ligands.

Abstract: The present invention relates to a process for the refunctionalisation of chemically inert, thermally pre-treated metal oxides having an increased number of co-reactive groups on the oxide surface, without producing by-products which have a deactivating effect on catalytic components. The invention furthermore relates to the use of the refunctionalised metal oxides as catalyst supports for the polymerisation of olefins.

Abstract: Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO2 or SiO2 in combination with MgCl2 as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.