Patent ID: 6713146
Filing Date: 2004-03-30
Classification: C07D,C07F,C09B,C09K,G11B,Y10T

Abstract:
An optical data medium containing a transparent substrate, on the surface of which are applied at least one information layer that is recordable using light and optionally a reflection layer, optionally one or more intermediate layers, and/or optionally a protective layer wherein the information layer contains, as a light-absorbing compound, at least one Co-phthalocyanine dye of the formula (I) in whichCoPc represents cobalt(III) phthalocyanine, L1 and L2 are axial, coordinately bonded ligands of the cobalt central atom and represent an amine of the formula NR0R1R2 or represent an isonitrile of the formula â€ƒin which R0, R1, and R2 independently of one another, represent hydrogen, alkyl, cycloalkyl, alkenyl, aryl, or hetaryl or two of the radicals R0 to R2, together with the N atom to which they are bonded, form a hydrogenated, partly hydrogenated, quasiaromatic, or aromatic ring that optionally contains further heteroatoms, R represents alkyl, cycloalkyl, alkenyl, aryl, or hetaryl, and R3, R4, R5, and R6 are substituents of phthalocyanine and, independently of one another, represent halogen, cyano, alkyl, aryl, alkylamino, dialkylamino, alkoxy, aryloxy, arylthio, alkylthio, SO3H, SO2NR7R8, CO2R12, CONR7R8, NHâ€”COR12, or a radical â€”(B)mâ€”D in which B denotes a bridge member from the group consisting of a direct bond, CH2, CO, CH(alkyl), C(alkyl)2, NH, S, O, or â€”CH&boxH;CHâ€”, such that (B)m denotes a chemically expedient combination of bridge members B where m is 1 to 10, D represents the monovalent radical of a redox system of the formula â€ƒor â€ƒor represents a metallocenyl radical or metallocenylcarbonyl radical in which titanium, manganese, iron, ruthenium, or osmium is suitable as a metal center, in which X1 and X2, independently of one another, represent NRâ€²Râ€³, ORâ€³, or SRâ€³, Y1 represents NRâ€², O, or S, Y2 represents NRâ€², n represents 1 to 10, and Râ€² and Râ€³, independently of one another, represent hydrogen, alkyl, cycloalkyl, aryl, or hetaryl, or form a direct bond or a bridge to one of the C atoms of the â€ƒchain, w, x, y, and z, independently of one another, represent 0 to 12 and w+x+y+z are 12, R7 and R8, independently of one another, represent alkylamino, hydroxyalkylamino, dialkylamino, bishydroxyalkylamino, or arylamino, or R7 and R8, together with the N atom to which they are bonded, form a heterocyclic 5-, 6-, or 7-membered ring, optionally with participation of further heteroatoms, R12 represents alkyl, aryl, hetaryl, or hydrogen, and Anâˆ’ represents an anion.