Basf Aktiengesellschaft

Daimler-benz Ag

Basf Se Corporation

Ekkehard Lindner

Markus Schmid

Peter Wegner

Joachim Queisser

Michael Slany

Gerrit A Luinstra

Hans-Helmut Görtz

Joachim Wald

Bernd Krutzsch

Michael Gepr&auml;gs

Peter Preishuber-Pfluegl

Mubarik Mahmood Chowdhry

Xavier Sava

Peter Preishuber-Pflügl

Michael Geprägs

Monika Förster

Andreas Baumann

Wolfram Wielandt

Michael Henes

Mahmoud Sunjuk

Michael Pabel

Process for preparing an aqueous polymer dispersion by polymerization of at least one olefinically unsaturated compound in an aqueous medium in the presence of at least one dispersant and a solid polymerization catalyst.

Method for producing aqueous polymer dispersions

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I[MLL]Z&#x2003;&#x2003;(I)

Production of polyoxymethylene and suitable catalysts

A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I[CpML]Z&#x2003;&#x2003;(I)

Production of polyoxymethylene and suitable (II) catalysts

Catalyst systems for the copolymerization of carbon monoxide and &#x3b1;-olefinically unsaturated compounds contain, as essential components,

Catalyst systems based on transition metal complexes for carbon monoxide copolymerization in an aqueous medium

Water-soluble transition metal complexes

A diesel fuel containing an additive which improves the combustion of soot, for reducing the pollutant emission in the combustion exhaust gases from diesel engines by discontinuous burning-off of soot which has been precipitated in the exhaust gas filter, is described. For this purpose, a lithium, sodium or potassium salt of an aliphatic or aromatic alcohol, of a phenol, of an aliphatic acid or of a naphthoic acid, phenylacetic acid or cinnamic acid is added, singly or as a mixture, to the diesel fuel before the combustion of the latter in the internal combustion engine. As a result of the addition of the alkali metal salts, the ignition temperature of the soot precipitated in the particle filter is reduced, and the soot is oxidized at a temperature which is considerably lower than the normal ignition temperature. The regeneration range for the particle filter is therefore reached much more frequently in real running practice. This avoids a critical filter loading with soot, which can lead to filter damage during burning off. A further advantage of the process described is that, according to present knowledge, no additional substances with a health risk are emitted during running as a result of the addition of these alkali metal salts to the diesel fuel.

Diesel fuel containing an additive which improves the combustion of soot

Growing community of inventors

Tübingen, Germany

Ekkehard Lindner