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:
Sep. 18, 2012
Filed:
Aug. 10, 2005
Sabine Melson, Mainz, DE;
Marc Entenmann, Fellbach, DE;
Marita Jekel, Darmstadt, DE;
Marcus Mathias, Gernsheim, DE;
Sabine Melson, Mainz, DE;
Marc Entenmann, Fellbach, DE;
Marita Jekel, Darmstadt, DE;
Marcus Mathias, Gernsheim, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The present invention relates to pearlescent pigments based on glass flakes which are distinguished by the fact that they have the following layer structure: A) optionally a layer of SiO, B) a high-refractive-index coating have a refractive-index n>1.8 which essentially consists of TiO, C) a low-refractive-index layer comprising SiOand/or AlOand optionally D) an outer protective layer, and to the use thereof in paints, coatings, automobile paints, powder coatings, printing inks, security printing inks, plastics, ceramic materials, glasses, paper, in toners for electrophotographic printing processes, in seed, in greenhouse sheeting and tarpaulins, as absorbers in the laser marking of paper and plastics, as absorbers for the laser welding of plastics, in cosmetic formulations, for the preparation of pigment pastes with water, organic and/or aqueous solvents, for the preparation of pigment compositions and dry preparations.