Lanxess Deutschland Gmbh

Bayer Aktiengesellschaft

Rainer Elbert

Thomas Weiss

Bernd Klinksiek

Johannes Kaulen

Wolfgang Grape

Peter-Roger Nyssen

Thomas Weiβ

Martin Hoch

Benno Franz Ulfik

Uwe Nussbaum

Egbert John

Jan- Gerd Hansel

Thomas Weiß

The invention describes a process for preparing propoxylated, phosphorus-containing compounds using aluminium chloride catalyst.

Preparation of phosphorus-containing propoxylation products by using aluminium trichloride

The invention describes a process for preparing alkoxylated, phosphorus-containing compounds, using heterogeneous catalysts based on metal oxides of aluminum, so that the product can be worked up anhydrously.

Preparation of phosphorus-containing alkoxylation products

The invention relates to an improved process for the production of finely divided blowing agent powders.

Process for the production of finely divided milled material

Stable polymer dispersions with polymer particle sizes of 0.1 to 10 .mu.m are prepared by dissolving a water-in-oil emulsion, comprising a polymer dissolved in an organic solvent which is immiscible with water (organic phase) and an aqueous phase, wherein the viscosity of the organic phase is 1.0 to 20,000 mPas (measured at 25.degree. C.), the surface tension between organic and aqueous phase is 0.01 to 30 mN/m, the particle size of the water emulsified in the organic phase is 0.2 to 50 .mu.m and the ratio by volume of organic phase to aqueous phase is in the range 80:20 to 20:80, subjecting this emulsion to a shear process at a shear power of 1.times.10.sup.3 to 1.times.10.sup.8 Watts per cm.sup.3, wherein the water-in-oil emulsion is converted into an oil-in-water emulsion.

Process for preparing stable, finely divided polymer dispersions

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Bergisch Gladbach, Germany

Rainer Elbert