Metallocenyl phthalocyanines as optical recording media

US7034148B2 · kind B2 · utility

Assignee

• Ciba Specialty Chemicals Corporation · US

Inventors

• Jürgen Beyrich · Huttingen, DE
• Rudolf Blattner · Bad Kötzting, DE
• Jean-Luc Budry · Rossemaison, CH
• Wolfgang Freitag · Wahlstedt, DE
• Colin Morton · Faringdon, GB
• Gerald Anthony Murphy · Muttenz, CH
• Beat Schmidhalter · Bubendorf, CH
• Michael Schulz · Bad Kötzting, DE
• Heinz Spahni · Frenkendorf, CH
• Christian Stern · Wädenswil, CH
• Annemarie Wolleb · Fehren, CH
• Heinz Wolleb · Fehren, CH
• Roland Zoelper · Basel, CH

Key dates

• Filing date: Apr 9, 2002
• Grant date: Apr 25, 2006
• Expiry date: Jun 9, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/146
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Mixtures of metallocenyl phthalocyanines obtainable by reacting a mixture A comprising two phthalocyanines (I) and (II) with a metallocene derivative in the presence of a catalyst, and also oligomeric metallocenyl phthalocyanines, processes for preparing them, their use for, inter alia, optical recording and optical recording media