Process for the production of β type copper...

Details Process for the production of β type copper... Process for the production of β type copper...

2007-08-14

2007-08-14

Green, Anthony J. (Department: 1755)

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

C106S031770, C106S031780, C106S410000, C106S411000, C106S413000, C524S088000, C540S122000, C540S140000, C540S141000

Reexamination Certificate

active

10869854

ABSTRACT:
A process for the production of a β type copper phthalocyanine pigment, comprising dry-milling a crude copper phthalocyanine having a purity of 97 to 100% and a primary crystal diameter of 0.5 to 100 μm at a temperature of 180 to 50° C., to prepare an α/β mixed crystal type copper phthalocyanine having an α ratio of 5 to 35%, and treating the dry-milled product with a water-miscible organic solvent,wherein 0.1 to 20% by weight of at least one compound selected from the group consisting of a compound of the formula (1), a compound of the formula (2) and a compound of the formula (3) is added to the dry-milled product before, during or after the step (B)in-line-formulae description="In-line Formulae" end="lead"?MePc—{X—(CH2)kNR1R2}n  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?MePc—(SO3−N+R5R6R7R8)p.  (3)in-line-formulae description="In-line Formulae" end="tail"?

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