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:
Jun. 22, 2010
Filed:
Aug. 04, 2005
Martin Koenemann, Mannheim, DE;
Arno Boehm, Langenfeld, DE;
Hermann Bidlingmaier, Sachsenheim, DE;
Reinhold Rieger, Waldsee, DE;
Peter Blaschka, Ludwigshafen, DE;
Helmut Reichelt, Neustadt, DE;
Matthias Krieger, Basel, CH;
Martin Koenemann, Mannheim, DE;
Arno Boehm, Langenfeld, DE;
Hermann Bidlingmaier, Sachsenheim, DE;
Reinhold Rieger, Waldsee, DE;
Peter Blaschka, Ludwigshafen, DE;
Helmut Reichelt, Neustadt, DE;
Matthias Krieger, Basel, CH;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for preparing quaterrylene-3,4:13,14-tetracarboximides of the general formula I in whichR, R' are each independently hydrogen or optionally substituted C-C-alkyl, C-C-cycloalkyl or aryl or hetaryl;which comprises reacting a perylene-3,4-dicarboximide of the general formula IIa in the presence of a base-stable, high-boiling, organic solvent and of an alkali metal base or alkaline earth metal base, with a perylene-3,4-dicarboximide of the general formula IIb in which X is hydrogen, bromine or chlorine.