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    • 6. 发明专利
    • PHTHALOCYANINE COMPOUND AND ITS PRODUCTION
    • JPH02666A
    • 1990-01-05
    • JP29625988
    • 1988-11-25
    • IDEMITSU PETROCHEMICAL CO
    • KATAI SHUNJIFUKUMOTO YUJI
    • B41M5/26C07D487/22C09B47/08C09B47/12C09B47/18C09B47/22C09B47/30G11B7/24G11B7/244
    • PURPOSE:To obtain the present compound having photosensitivity desirable as a pigment for optical discs and a maximum absorption wavelength suitable for it by reducing a phthalocyanine derivative obtained by reacting a specified phthalic anhydride derivative with urea and a metal salt. CONSTITUTION:A phthalic anhydride derivative of formula I (wherein R is H, a 1-20C alkyl, a 1-20C alkoxy-substituted 1-5C alkyl, a 6-20C aryl, a 6-20C aryloxy, a 2-12C polyether or the like) is reacted with urea and a metal salt to produce a phthalocyanine derivative of formula II (wherein R is as defined above; M is a metal, a metal oxide, a metal halide or two hydrogen atoms; Y -Y are each H or NO2, and the members in each of pairs Y and Y , Y and Y , Y and Y , and Y and Y are different from each other), and this compound is reduced to produce a chlorocyanine compound of formula III (wherein R and M are as defined above; X -X are each H or NH2, and the members in each of pairs X and X , X and X , X and X , and X and X are different from each other). this compound has photosensitivity desirable as a pigment for optical discs and a maximum absorption wavelength suitable for it. It can be easily and efficiently produced by the above process, and has a possibility of effective use as a new pigment for optical discs.