Studiengesellschaft Kohle Mbh

Sachtleben Chomie Gmbh

Sachtleben Chemie Gmbh

Gerhard Fink

Volker Mohring

Jochen Winkler

Bernd Hirthe

Bernd Proft

Udo Blumenthal

Klaus Hauschild

Eberhard Kinkelin

The invention relates to methods for producing cesium hydroxide solutions during which: cesium-containing ore is disintegrated with sulfuric acid while forming a cesium aluminum sulfate hydrate, which is poorly soluble at low temperatures; the formed cesium alum is separated away in the form of a solution from the solid ore residues; the aluminum is precipitated out of the cesium alum solution while forming a cesium sulfate solution; the formed cesium sulfate solution is reacted with barium hydroxide or stontium hydroxide while forming a cesium hydroxide solution, and; the formed cesium hydroxide solution is concentrated and purified.

Catalyst system consisting of a carrier and of a co-catalyst

The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching paints are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.

Process for preparing .alpha.-olefin polymers and oligomers

A process for the preparation of polyolefins, polydienes and copolymers thereof by polymerization in solvents, liquid monomers or in the gaseous phase at a temperature between -20.degree. C. and 150.degree. C. using magnesium hydride, a halogen-containing transition metal compound of Group IV and an aluminium alkyl compound, characterized in that the polymerization is carried out in the presence of a catalyst system consists of

Process for preparing polyolefins, polydienes and copolymers thereof

The invention relates to polymers and oligomers characterized in that they have been prepared from .alpha.-olefin monomers or mixtures thereof and the distances between the methyl branching points are controllable by the selection of the .alpha.-olefins and to a process for preparing said novel polymers and oligomers.

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Muhlheim/Ruhr, Germany

Gerhard Fink