Agglomerated pigment, process for producing the same, aqueous pi

Details Agglomerated pigment, process for producing the same, aqueous pi Agglomerated pigment, process for producing the same, aqueous pi

1997-12-22

2000-07-04

Klemanski, Helene

Compositions: coating or plastic

Materials or ingredients

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

106 316, 106402, 106411, 106413, 106493, 106494, 106495, 106496, 106497, 106498, C09B 6750

Patent

active

060833157

ABSTRACT:
An agglomerated pigment comprises (1) an organic pigment compound, (2) either a sulfonated organic pigment compound obtained by incorporating at least one sulfonic group into the organic pigment compound or a sulfonated organic pigment derivative obtained by incorporating at least one sulfonic group into a derivative of the organic pigment compound, (3) univalent inorganic counter ions bonded to sulfonic groups of component (2), and (4) bivalent or higher inorganic counter ions which are bonded to sulfonic groups of component (2) and wherein each such group has an at least univalent positive charge, the surface of the agglomerated organic pigment as a whole being positively charged. An aqueous pigment dispersion and a water-based ink composition both having excellent storage stability, an agglomerated pigment for use as a raw material for the dispersion, and a process for producing the pigment are provided.

REFERENCES:
patent: 2526345 (1950-10-01), Giambalvo
patent: 3582380 (1971-06-01), Hamilton
patent: 4957841 (1990-09-01), Macholdt et al.
patent: 5728204 (1998-03-01), Sattar et al.

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