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:
Mar. 23, 2010
Filed:
Jul. 03, 2007
Applicants:
Ulrich Feldhues, Bergisch Gladbach, DE;
Frank Linke, Köln, DE;
Ronald Göbel, Leverkusen, DE;
Inventors:
Assignee:
LANXESS Deutschland GmbH, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 67/20 (2006.01); C09B 67/02 (2006.01); C09B 67/42 (2006.01); C09B 45/22 (2006.01); C07F 15/04 (2006.01); C07D 241/28 (2006.01); C07D 241/18 (2006.01); C07D 251/54 (2006.01);
U.S. Cl.
CPC ...
Abstract
Process for preparing pigments of the formula (I) or tautomeric structures thereof and their hydrates, containing melamine as guest, characterized in that a mixture of the azobarbituric mono-cation salt (II) and the azobarbituric di-cation salt (III) is reacted with a nickel compound and melamine, in which cation1, cation2 and cation3 independently of one another are any desired univalent cations or the fraction of any desired multivalent cation that corresponds to a positive charge of one.