Mitsubishi Chemical Corporation

Mitsubishi Kasei Corporation

Takako Tsukahara

Satoru Imamura

Shuichi Maeda

Tameichi Ochiai

Yutaka Kurose

Takumi Nagao

Kazuo Mitsuhashi

An azo metal chelate compound of an azo compound of the formula (I) with a metal: ##STR1## wherein A is a residue forming a heterocyclic ring together with the carbon atom and the nitrogen atom to which it is bonded, X is a residue forming an aromatic group together with the two carbon atoms to which it is bonded, R.sup.1 is an alkyl group which may be substituted, an aryl group which may be substituted, an alkenyl group which may be substituted, or a cycloalkyl group which may be substituted, Y is a hydrogen atom or a cation, and n is an integer of from 1 to 3.

Azo metal chelate compound

Metal chelate compound and optical recording medium using the compound

An optical recording medium comprising a substrate and a recording layer formed thereon for information to be written in and/or to be read out, wherein said dye-incorporated composition comprising a cyanine type dye and an azo metal chelate compound comprising an azo type compound of the following formula (I) ##STR1## (wherein A is a residue forming a hetoro ring together with the carbon atom and the nitrogen atom to which it is bonded, B is a residue forming an aromatic ring or a hetoro ring together with the two carbon atoms to which it is bonded, and X is a group having an active hydrogen), and a metal.

Optical recording medium comprising a dye-incorporated composition

Dye-incorporated composition

Growing community of inventors

Sagamihara, Japan

Takako Tsukahara