| 摘要 |
PURPOSE: To obtain the subject compound having excellent absorbing properties, solubility, light resistance and economical efficiency and useful for a near- infrared absorbing pigment, especially for an addition-type optical recording medium by position-selectively introducing a substituting group to a phthalocyanine skeleton. CONSTITUTION: The objective compound is obtained by reacting (A) a phthalonitrile compound of formula I (COOR is a carboxylic acid ester having a heterocycle; X is a halogen, etc.; m is an integer of 0-3; n is an integer of 0-4) with (B) a metallic compound and expressed by (C) the formula II in which 1-8 pieces of benzene nuclei in 16 substitutable positions in a phthalocyanine skeleton are substituted with phenoxy and the phenoxy is substituted with a carboxylic acid ester having more than one heterocycles (M is a metal, a metal oxide or a metal halide). The objective optical recording medium is obtained by adding the compound to a recording medium placed on a substrate. |
