Evonik Degussa Gmbh

Lara Dabrowski

Frank Menzel

Horst-Werner Wollenweber

Formulation comprising hydrophobicized particles of silicon dioxide, mineral oil and one or more emulsifiers, where the hydrophobicized silicon dioxide is a fumed silicon dioxide, possesses a BET surface area of 200 to 300 m/g, has on the surface of the particles O&#x2014;Si&#x2014;(CH)groups, where n is 1 to 3 and where the (CH) units are alike or different, has a carbon content of 1.5% to 5% by weight, based on the hydrophobic silicon dioxide, and is present in the formulation with a fraction of 0.05% to 5% by weight.

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Mannheim, Germany

Lara Dabrowski