Pigment composition, printing ink, and method for manufacturing pigment composition

Abstract

The issue of the present invention is to provide a disazo pigment in which the polychlorinated biphenyl (PCB) content in addition to the primary aromatic amine (PAA) content is reduced. The present invention provides a pigment composition containing a disazo pigment, an alkylamine that has an alkyl group having a carbon number of 8 or more, and a poly(oxyethylene) alkyl ester that has an alkyl group having a carbon number of 8 or more. Preferably, the disazo pigment includes at least one disazo pigment selected from a group consisting of C.I. Pigment Yellow 83, C.I. Pigment Yellow 13, and C.I. Pigment Yellow 14.

Dependencies are inferred from the claim text.