Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2008-01-24
2010-06-15
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C106S400000
Reexamination Certificate
active
07737270
ABSTRACT:
Provided is a method for producing a pigment, in particular, a metal phthalocyanine, in high yield and in a green process. The method has (1) a step of obtaining a solution mixture by mixing at least one type of compound serving as a raw material for a pigment with a solvent, and (2) a step of obtaining the pigment by reacting the compound while holding the solution mixture at not less than a temperature where a subcritical state or a supercritical state of the solvent occurs.
REFERENCES:
patent: 05-179153 (1993-07-01), None
patent: 07-316448 (1995-12-01), None
Guy et al., “Stnthesis of Phtalocyanines . . . ”, Chem. Commumn., (1997).
Hanyu Yukio
Hattori Hayato
Hiaki Toshihiko
Kuriyama Akira
Nakahama Kazumichi
Canon Kabushiki Kaisha
Canon U.S.A. Inc. IP Division
Ward Paul V.
Wilson James O.
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