Dispersion ink

Details Dispersion ink Dispersion ink

1998-07-28

2000-08-08

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Marking

106 3158, 106 3159, 106 3165, 106 3186, 106 3189, 106499, C09D 1102

Patent

active

060996277

ABSTRACT:
The present invention provides a dispersion ink excellent not only high-definition print quality but also re-dispersibility. More particularly, the present invention provides a dispersion ink comprising at least a pigment or a disperse dye, which has a particle diameter of 75 nm or less, an amphiphilic compound, and water, said amphiphilic compound having a hydrophilic portion composed of a poly(ethylene oxide) and a hydrophobic portion composed of an alkyl group and/or an aromatic group and bonded to the hydrophilic portion, said amphiphilic compound containing at least one ionic group at the end of the poly(ethylene oxide) constituting the hydrophilic portion which is not bonded to the hydrophobic portion, and the whole amphiphilic compound having a molecular weight of 5,000 or less, wherein between the particle diameter of said pigment or said disperse dye and the molecular weight of said amphiphilic compound, there is the relationship represented by the following expression (1):

REFERENCES:
patent: 5605566 (1997-02-01), Yui et al.
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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