Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Diam Bouchage

Rudolf Zobel

Karsten Korth

Jürgen Heidlas

Oliver Klockmann

Reimund Pieter

Martin Ober

Kurt Stork

Kurt Eichenauer

Moaad Bakali

Process for the extraction of substances from at least one silane-modified oxidic or silicatic filler, wherein at least one gas compressed by means of pressure and/or temperature is employed as the extraction agent and the compressed gas is led in the radial direction through the filler in the pressure container and/or the substances extracted from the silane-modified filler are removed from the compressed gas with a suitable sorbent. A device for carrying out the process is furthermore described, wherein this comprises at least one pressure container having at least one internal container, sieve or insert for accommodation of the fillers which is permeable to gas and at least one gas feed and gas removal in the bulk bed of filler, and has a radially designed gas feed or gas removal from the bulk bed of filler.

Process and device for the extraction of substances from silane-modified fillers

Silane-modified oxidic or siliceous filler with a bead fraction below 75 &#x3bc;m of less than 15 wt. % and a median particle size distribution between of 150 to 500 &#x3bc;m, which is produced by the reaction of at least one microbeaded or microgranular, oxidic or siliceous filler in a compressed gas with at least one silane. The silane-modified oxidic or siliceous fillers are used in rubber compounds.

Silane-modified oxidic or siliceous filler, process for its production and its use

Growing community of inventors

Willanzheim, Germany

Rudolf Zobel