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:
May. 21, 1991
Filed:
Apr. 03, 1989
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
##STR1## wherein A and B independently of one another are carbocyclic or heterocyclic aromatic radicals, acyclic or cyclic aliphatic radicals or araliphatic radicals, Q is a divalent carbocyclic or heterocyclic aromatic, acyclic or cyclic aliphatic or araliphatic radical, E is a direct bond or a group --CO-- or --CS-- and X is a group --SR or --NRR', wherein R and R' independently of one another are hydrogen, carbocyclic or heterocyclic aromatic radicals, acyclic or cyclic aliphatic radicals or araliphatic radicals and R' can additionally be a group --O--halogen or --Q--EY--(C.sub.1 -C.sub.5 -alkyl), wherein Y is O or S, or R and R' form a 5-membered or 6-membered heterocyclic radical with the N atom to which they are bonded. Pyrrolopyrroles of this type are suitable for coloring high-molecular organic material to give intensely colored, brilliant and transparent colorations with good general fastness properties, and for use in photoelectric recording materials as photoconductive substances.