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:
Nov. 18, 2008
Filed:
Jul. 29, 2003
Applicants:
Jürgen Meyer, Stockstadt, DE;
Stephanie Frahn, Goldbach, DE;
Manfred Ettlinger, Karlstein, DE;
Inventors:
Assignee:
Degussa AG, Düsseldorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/16 (2006.01); B32B 19/00 (2006.01); B32B 27/02 (2006.01); B32B 27/40 (2006.01);
U.S. Cl.
CPC ...
Abstract
Silanized, structurally modified, pyrogenically produced silicas, characterised by groups fixed to the surface, wherein the groups are dimethylsilyl and/or monomethylsilyl, are produced in that pyrogenically produced silica is treated by a known method with dimethyldichlorosilane and/or monomethyltrichlorosilane, the groups dimethylsilyl and/or monomethylsilyl being fixed on the surface of the pyrogenic silica, and is then structurally modified and optionally post-ground. They are used to improve scratch resistance in lacquers.