Fluorescent azabenzanthronic dyes

US4031096A · kind A · utility

Assignee

• Montedison S.p.A. · IT

Inventors

• Giampiero Pieri · Saronno, IT
• Filippo M. Carlini · Novara, IT
• Camillo Paffoni · Borgosesia, IT
• Gioacchino Boffa · Novara, IT

Key dates

• Filing date: Apr 21, 1976
• Grant date: Jun 21, 1977
• Expiry date: Apr 21, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B5/14
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A fluorescent azabenzanthronic dye is disclosed having the general formula (I): ##STR1## wherein X = --NH-- or --S--; and Y = --OCH.sub.3 or --OC.sub.2 H.sub.5. A process for the preparation of a dye of the general formula (I) is also disclosed. These dyes are useful in the bulk dyeing of polystyrene, polymethylmethacrylate, rigid PVC, polyethylene, acrylonitrile/butadiene/styrene copolymers, polycarbonates or mineral oils.