Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Degussa Gmbh

Kurt Spitznagel

Jürgen Meyer

Hans-Dieter Christian

Juergen Meyer

Günther Michael

Guenther Michael

Tina Gross

The invention relates to a hydrophobic fumed silica which is obtained by grinding a fumed silica which, as a result of silanization, has trimethylsilyl groups fixed on the surface; and to coating formulations comprising this silica.

Fumed silanized and ground silica

A structurally coated silica can be prepared by spraying and mixing a pyrogenic silica with water and a coating agent in a suitable mixing vessel, then milling and then conditioning the product. The structurally coated silica can be used as a matting agent in lacquers.

Structurally coated silica

Texture-coated silica can be prepared by spraying a fumed silica with water and a coating agent, for example a thermoplastic elastomer, while mixing in a suitable mixing vessel, then milling and subsequently drying the mixture. The texture-coated silica can be used as a delustering agent in lacquers and for improving the soft feel.

Texture-coated silica

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Hanau, Germany

Kurt Spitznagel