Phthaloperinone dyestuffs

US5530130A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Roschger · Ludwigshafen, DE
• Volker Hederich
• Stephan Michaelis · Leverkusen, DE

Key dates

• Filing date: Aug 12, 1994
• Grant date: Jun 25, 1996
• Expiry date: Aug 12, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B57/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Phthaloperinone dyestuffs of the general formula (I) ##STR1## wherein Z denotes SO.sub.2 or CO, PA1 A represents optionally substituted alkyl or aryl, PA1 and the other substituents have the meanings given in the description, are prepared by condensation of corresponding phthalic acids or functional derivatives thereof and optionally substituted 1,8-naphthalene-diamines. The dyestuffs according to the invention have very good fastnesses and are employed in processes for bulk dyeing plastics.