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:
Oct. 23, 2012
Filed:
May. 06, 2008
Applicants:
Juergen Meyer, Stockstadt, DE;
Horst Zeizinger, Hanau, DE;
Mario Scholz, Gruendau, DE;
Uwe Ellenbrand, Steinau, DE;
Inventors:
Juergen Meyer, Stockstadt, DE;
Horst Zeizinger, Hanau, DE;
Mario Scholz, Gruendau, DE;
Uwe Ellenbrand, Steinau, DE;
Assignee:
Evonik Degussa GmbH, Essen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08L 83/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a hydrophobic, fumed silica which is obtained by reacting fumed silicas with cyclic polysiloxanes of the type —[O—SiR]—, where R is a Cto Calkyl group and n is 3 to 9, and subsequently milling the silanized silicas obtained, and to a process for the preparation of the silica according to the invention, and to silicone rubber materials containing the silica according to the invention.