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. 25, 2010
Filed:
Oct. 06, 2009
Applicants:
Joachim Duschek, Pfungstadt, DE;
Ralf Glausch, Muehltal, DE;
Inventors:
Joachim Duschek, Pfungstadt, DE;
Ralf Glausch, Muehltal, DE;
Assignee:
Merck Patent Gesellschaft MIT Beschrankter Haftung, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09C 1/00 (2005.12); C09C 1/14 (2005.12); C09C 1/36 (2005.12); C04B 14/20 (2005.12); C04B 14/04 (2005.12);
U.S. Cl.
CPC ...
Abstract
A pearlescent pigment based on a metal oxide-coated, platelet-shaped substrate and a top layer on the metal oxide layer, where the top layer comprises silicon dioxide, at least one further metal hydroxide or metal oxide hydrate and at least one organic coupling reagent. The further metal hydroxides or metal oxide hydrates are hydroxides or oxide hydrates of cerium, aluminum or zirconium, or mixtures thereof. The coupling reagents employed are organofunctional silanes, zirconium aluminates or metal acid esters.