The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Nov. 24, 2008
Lara Dabrowski, Mannheim, DE;
Frank Menzel, Hanau-Steinheim, DE;
Horst-werner Wollenweber, Essen, DE;
Lara Dabrowski, Mannheim, DE;
Frank Menzel, Hanau-Steinheim, DE;
Horst-Werner Wollenweber, Essen, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
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—Si—(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.