Process for preparing self-dispersible coloring agent using...

Details Process for preparing self-dispersible coloring agent using... Process for preparing self-dispersible coloring agent using...

2008-07-01

2008-07-01

Lorengo, J. A. (Department: 1793)

Compositions: coating or plastic

Materials or ingredients

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

C106S031600, C106S031430, C106S031750, C106S031460, C106S031470, C106S031490, C106S031760, C106S031770, C106S031780, C106S499000

Reexamination Certificate

active

10926953

ABSTRACT:
A self-dispersible coloring agent represented by formula (II) below is prepared by incorporating a hydrophilic group into a coloring agent through a reaction of a hydrophilic group-containing halide represented by formula (I) below and the coloring agent in the presence of a Lewis acid catalyst:in-line-formulae description="In-line Formulae" end="lead"?X-L-R1  (I)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?(the coloring agent)-L-R1  (II)in-line-formulae description="In-line Formulae" end="tail"?wherein L represents a single bond or —C(═O)—; R1is selected from the group consisting of a substituted or unsubstituted C1-C20alkyl group containing a hydrophilic group, a substituted or unsubstituted C6-C20aryl group containing a hydrophilic group a substituted or unsubstituted C2-C20heteroaryl group containing a hydrophilic group and a substituted or unsubstituted C7-C20arylalkyl group containing a hydrophilic group; and X is one of: —F, —Br, —I and —Cl. may be obtained conveniently through a one-step process. The ink composition containing the self-dispersible coloring agent provides effective long-term storage stability and dispersion stability using a one-step process.

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