Pigmented ink and process for production thereof

Details Pigmented ink and process for production thereof Pigmented ink and process for production thereof

1998-07-21

2000-09-05

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3165, 106 3189, 106499, C09D 1102

Patent

active

061136808

ABSTRACT:
The present invention relates to a pigmented ink, in particular, an ink suitable for an ink-jet printing method comprising jet of ink droplets from a print head. More particularly, it relates to a pigmented ink excellent in the dispersibility and dispersion stability of pigment particles, storage stability, etc. There is provided a pigmented ink which comprises (1) an organic pigment having a surface made hydrophobic by adsorption thereon or binding thereto of an organic substance, (2) an amphiphilic compound composed of a poly(ethylene oxide) as a hydrophilic portion and an alkyl group and/or an aromatic group as a hydrophobic portion, and (3) water, and is excellent in the dispersion stability of pigment particles and storage stability by virtue of the above composition.

REFERENCES:
patent: 4509982 (1985-04-01), Iijima
patent: 5621021 (1997-04-01), Yoshioka et al.
patent: 5658376 (1997-08-01), Noguchi et al.
patent: 5954866 (1999-09-01), Ohta et al.

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