Patent ID: 7754863
Filing Date: 2010-07-13
Classification: C09B,G11B

Abstract:
1. An optical recording medium comprising a substrate, a reflecting layer and a recording layer, wherein the recording layer comprises a compound of formula or a mesomeric or tautomeric form thereof, wherein M are each independently of the other or C 2 -C 8 heteroaryl unsubstituted or mono- or poly-substituted by R 10 , R 11 , R 12 and/or R 13 ; Q R R thus forming a phenyl ring together with the two adjacent carbons to which they are bound; R R R R R R each R each R R or NR R R R it being possible once or more times for radicals of the same or different substituents each selected from the group consisting of R k is an integer 1, 2, 3 or 4; and n is an integer 1, 2 or 3.