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:
Oct. 06, 1998
Filed:
Jun. 11, 1996
Applicant:
Inventors:
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548453 ; 544144 ;
Abstract
Diketopyrrolo�3,4-c!pyrroles of the formula ##STR1## in which X and Y independently of one another are a divalent aromatic radical and R is a radical CN, COR.sub.5, CO.sub.2 R.sub.5, CON(R.sub.5).sub.2, NO.sub.2, SO.sub.2 R.sub.5, SOR.sub.5, SO.sub.2 N(R.sub.5).sub.2 or PO(OR.sub.6).sub.2. For the definition of the substituents R.sub.1, R.sub.2 and R.sub.5, refer to claim 1. These compounds are blue to violet, tinctorially strong pigments with good stability properties, in particular good light stability and weather stability.