Bayer Aktiengesellschaft

H.c. Starck Gmbh

H. C. Starck, Gmbh & Co Kg

H. C. Starck Gmbh & Co

Josef Schmoll

Armin Olbrich

Juliane Meese-Marktscheffel

Viktor Stoller

Manfred Bucheler

Frank Schrumpf

Gerhard Gille

Roland Rupp

Dirk Naumann

Hans Uhlemann

Andreas Ohm

Ricarda Leiberich

Raymond Audenaert

Sven Albrecht

Christoph Schild

Stefan Malcus

Michael Erb

Wolfgang Kummer

Daniel Gordon Duff

Wilfried Gutknecht

Matthias Jahn

Helmut Luchtenberg

Takaaki Nishioka

Paul Moltgen

Axel Wollenschlager

Ulrich Krynitz

Astrid Gorge

Rüdiger Zertani

Michael Kruft

Gerd Maikowske

Katrin Plaga

Evelyn Pross

Mathias Benz

Alban Hennen

Heinz Goller

Pirmin Wilhelm

Eduard Porges

Astrid Görge

Wolfgang Schweda

Joerg Henze

Gisbert Ebeling

Brigitte Schimrosczyk

Thomas Richter

Daniel Duff

A process for digesting molybdenum oxide concentrates includes suspending a molybdenum-containing starting material in an aqueous solution so as to obtain a suspension. While stirring, an oxidizing agent and an alkali solution of at least one alkali metal are metered to the suspension so as to set a pH and produce a product having a molybdenum content of at least 98% of the molybdenum-containing starting material. The alkali metal is selected from the group consisting of Na, K and Li.

Method for solubilizing molybdenum oxide concentrates

A process for preparing nickel hydroxide by alkaline precipitation from nickel salt solutions in the presence of complexing agents, in which the precipitation is carried out at at least two different locations in the same mother liquor with different precipitation kinetics at the different locations and the mother liquor is mixed prior to agglomeration of the precipitated primary crystals, is described.

Nickel hydroxide and method for producing same

The invention relates to a method for producing metal hydroxides or alkaline metal carbonates by anode dissolution of the corresponding metals and precipitation of the hydroxides or alkaline carbonates in an aqueous medium. The anode dissolution of the metal components is carried out in the anode compartment of a three-compartment electrolytic cell. An aqueous auxiliary salt solution is fed to an intermediate compartment that is disposed between the anode compartment and the cathode compartment and that is separated therefrom by a porous membrane. An at least not alkaline metal salt solution is continuously taken from the anode compartment while an alkaline auxiliary salt solution is continuously taken from the cathode compartment. The at least not alkaline metal salt solution and the alkaline auxiliary salt solution are combined outside the electrolytic cell for the purpose of precipitating metal hydroxides or alkaline metal carbonates.

Method for producing metal hydroxides or alkaline metal carbonates

The invention relates to a method for producing lithium-transition metal mixtures of general formula Li(MM)O, wherein Mrepresents nickel, cobalt or manganese, Mrepresents chromium, cobalt, iron, manganese, molybdenum or aluminium, and is different from M, n is 2 if Mrepresents manganese and is 1 otherwise, x is comprised between 0.9 and 1.2, y is comprised between 0.5 and 1.0 and z is comprised between 1.9 and 2.1. According to the inventive method, an intimate mixture composed of transition metal compounds containing oxygen and of a lithium compound containing oxygen is calcinated, said mixture being obtained by processing a solid powder transition metal compound with a solution of said lithium compound, and then drying. At least the Mcompound is used in powder form having a specific surface of at least 20 m/g (BET) and calcination is carried out in a fluidised bed.

Method for producing lithium-transition metal mixtures

A process is described for the production of spherical nickel hydroxide by anodic dissolution of a nickel electrode and precipitation of nickel hydroxide in a completely intermixed electrolysis cell, wherein an electrolysis brine is used which has a content of 20 to 50 g/l of chloride ions and 1 to 7 g/l of ammonia with a pH value of 9.5 to 11.5 and a temperature of 45 to 60&deg; C.

Method for producing nickel hydroxides

New glass fibers having an average length of about 100 to 400 &mgr;m and an apparent density of about 1 to 0.2 g/cm,are produced by spinning glass fibers, comprising spinning glass fibers into bundles, cooling with liquid to form wet bundles, directly cutting such bundles in the wet state, without previous drying, grinding said bundles to milled glass fibers in a high-efficiency mixer with the addition of a liquid, and then drying. The fibers are especially suited for filling polyurethanes by the PUR-RIM process.

Process for the manufacture of milled glass fibers

Cobalt metal agglomerates, process for producing the same and their use

A process for the continuous fluidized bed agglomeration of a solid in powder form, wherein the powder, a granulating liquid and propelling air are fed through a three-substance nozzle into the center of a fluidized bed to form a three-phase mixture in the center of the fluidized bed.

Process for continuous fluidized bed agglomeration

Microcrystalline bodies based on .alpha.-Al.sub.2 O.sub.3 are made by drying sub-micron powders, press compacting and shock sintering at an intermediate sinter temperature range of 1,300.degree. to 1,550.degree. C., i.e. bringing the compact up to such range in under 60 seconds, preferably under 10.

Process for producing sintered .alpha.-Al.sub.2 O.sub.3 bodies and their

Process for the continuous fluidized bed agglomeration wherein the granulating liquid together with propellant air is supplied centrally through a three-phase nozzle on the distributor of the fluidized bed, and at the same time, the solid in powder form is fed into the fluidized bed through the annular space or the three-phase nozzle with the air of a current of propellant air, supplied separately and concentrically.

Apparatus for continuous fluidized bed agglomeration

Controlled release medicament pellets comprising

Medicaments having controlled release of the active compound

A pharmaceutical formulation tablet with a long-lasting action for 1 to 2 daily doses having a diameter between about 0.5 and 15 mm and comprising

Dihydropyridine depot formulation

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Goslar, Germany

Josef Schmoll