Bayer Aktiengesellschaft

Hermann-Jens Womelsdorf

Gerd Passing

Michael Mager

Steffen Hofacker

Werner Hoheisel

Nils Perchenek

The invention relates to a plastic article with a coating containing at least one zinc oxide-containing layer and at least one abrasion-resistant outer layer.

Plastics stabilized with zinc oxide-containing, abrasion-resistant multilayers

A method for the preparation of nano size zinc oxide particles having an average primary particle diameter of less than or equal to 15 nm, which are redispersible in organic solvents and/or water, by basic hydrolysis of at least one zinc compound in alcohol or an alcohol/water mixture. The hydrolysis is carried out with substoichiometric amounts of base, based on the zinc compound. The precipitate which originally forms during hydrolysis is left to mature until the zinc oxide has completely flocculated. This precipitate is then thickened to give a gel and separated off from the supernatant phase.

Nanoparticulate, redispersible zinc oxide gels

The present invention relates to a method for manufacturing transition metal carbides and/or transition metal carbonitrides and the use thereof together with novel transition metal xerogels.

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Leverkusen, Germany

Hermann-Jens Womelsdorf