Fluorescent benzanthronic dyes

US4036733A · kind A · utility

Assignee

• Montedison Fibre S.p.A. · IT

Inventors

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

Key dates

• Filing date: Apr 21, 1976
• Grant date: Jul 19, 1977
• Expiry date: Apr 21, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B3/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A plastosoluble fluorescent organic dye is disclosed that is derived from benzanthrone, and having the general formula: ##STR1## wherein X = --H or --Br; and Y = --H, --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.