Patent ID: 8614317
Filing Date: 2013-12-24
Classification: C07D,C09B

Abstract:
1. A polycyclic dye of the general formula in which R′ in each occurrence and independently of one another denotes hydrogen or a hydrocarbon group with 1-20 C atoms where the hydrocarbon group can optionally contain one or more heteroatoms or/and one or more substituents, R in each occurrence and independently of one another denotes hydrogen, halogen, a hydroxy, amino, sulfo, carboxy or aldehyde group or a hydrocarbon group with 1-20 C atoms where the hydrocarbon group can optionally contain one or more heteroatoms or/and one or more substituents, or R′ and R together form a ring system which can contain one or more multiple bonds, R R X denotes OH, halogen, —O—R Y denotes O, S or C(R) A