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. 06, 2012
Filed:
Jul. 08, 2009
Alfred Bubat, Wesel, DE;
Wolfgang Griesel, Hamminkeln, DE;
Phu Qui Nguyen, Mönchengladbach, DE;
Hans-jörg Kremitzl, Eckental, DE;
Alfred Bubat, Wesel, DE;
Wolfgang Griesel, Hamminkeln, DE;
Phu Qui Nguyen, Mönchengladbach, DE;
Hans-Jörg Kremitzl, Eckental, DE;
Eckart GmbH, , DE;
BYK-Chemie GmbH, , DE;
Abstract
Metallic effect pigments with a platelet-shaped metallic substrate. The pigments have at least one metal oxide layer. Covalently bonded to the surface of the metal oxide layer is a polysiloxane of formula I: where Ris a saturated or unsaturated, straight-chain or branched alkyl radical having 1 to 30 carbon atoms and/or an aryl radical, alkylaryl radical or arylalkyl radical having 6 to 30 carbon atoms; R, R, Rand Rindependently of one another are saturated or unsaturated, straight-chain or branched alkyl radicals having 1 to 6 carbon atoms and/or aryl radicals, alkylaryl radicals and/or arylalkyl radials having 6 to 12 carbon atoms; x=1 to 200, y=2 to 30; A is (CH), O, S, (OCHCH)or CR, where n=0 or 1 and m=0 to 30 and Ris H and/or alkyl having 1 to 6 carbon atoms; B is (CH)or (OCHCH), z=0 to 30 and w=0 to 30; and Rand Rindependently of one another are O or a saturated or unsaturated, straight-chain or branched alkyl radical having 1 to 6 carbon atoms and/or an aryl radical, alkylaryl radical or arylalkyl radical having 6 to 9 carbon atoms, where X is O or OH and is attached to the pigment surface. The disclosure further relates to a method for producing metallic effect pigments and to their use in powder coatings, more particularly in powder coatings produced by mixing methods, as well as to the use of these powder coatings. Finally, the disclosure also relates to powder coatings.