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Azulene-squarillic dyes, azulenes as their intermediary products, and optical recording medium

Assignee: BASF SE
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Filing: 1988-09-29
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Granted: —
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Expires: 2008-09-29
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Abstract

Abstract Translated from German Azulenquadratsäurefarbstoffe der Formel in der R 1 , R 2 , R 3 , R 4 und R 5 jeweils die in der Beschreibung genannte Bedeutung besitzten, Azulenderivate der Formel in der R 1 , R 2 , R 3 , R 4 und R 5 jeweils die in der Beschreibung genannte Bedeutung besitzten, als deren Zwischenprodukte sowie ein optisches Aufzeichnungsmedium, enthaltend die neuen Farbstoffe. Azulene square acid dyes of the formula in which R 1 , R 2 , R 3 , R 4 and R 5 each have the meaning given in the description, azulene derivatives of the formula in which R 1 , R 2 , R 3 , R 4 and R 5 each have the meaning given in the description, as their intermediates and an optical recording medium containing the new dyes.

Inventors

  • 👤 Wolfgang Dr. Schrott
  • 👤 Peter Dr. Neumann
  • 👤 Sibylle Dr. Brosius
  • 👤 Helmut Dr. Barzynski
  • 👤 Klaus Dieter Dr. Schomann
  • 👤 Harald Dr. Kuppelmaier

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-30 05:40
CPC Classifications
C; C09; C09B; C09B57/00; C09B57/007

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