AZULENMETHINFARBSTOFFE SOWIE OPTISCHES AUFZEICHNUNGSMEDIUM, ENTHALTEND DIE NEUEN FARBSTOFFE
摘要
<p>Azulenemethine dyes of the formula <IMAGE> in which R denotes optionally substituted C1-C6-alkyl, X<(-)> denotes an anion, A<(+)> denotes a heterocyclic radical, n denotes the number 1, 2 or 3 and m denotes the number 1 or 2, and optical recording material containing the novel dyes.</p>
