Patent · US Active

Non-aqueous quinacridone dispersions using dispersion synergists

US8084091B2 · kind B2 · utility

1Cited by

7References

12Claims

0Family size

Assignee

AGFA GRAPHICS NV · BE

Inventors

Geert Deroover · Lier, BE
Nicolas Point · Richwiller, FR

Key dates

Filing date	Nov 28, 2006
Grant date	Dec 27, 2011
Priority date	—
Expiry date	May 4, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/36
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A non-aqueous pigment dispersion includes a quinacridone pigment, a polymeric dispersant, and a dispersion synergist in a non-aqueous dispersion medium wherein the dispersion synergist is a quinacridone derivative substituted on one of the two nitrogen atoms of the quinacridone basic chromophore structure by a group including at least one carboxyl group or a salt thereof. Also, a method for printing an ink-jet image with an ink including the non-aqueous pigment dispersion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.