Patent · US Active

Non-aqueous pigment dispersions containing specific dispersion synergists

US8022117B2 · kind B2 · utility

4Cited by

7References

14Claims

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	Sep 20, 2011
Priority date	—
Expiry date	Nov 12, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/40
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A non-aqueous pigment dispersion includes a color pigment, a polymeric dispersant, and a dispersion synergist wherein the molecular weight of the anionic part of the dispersion synergist containing at least one carboxylate anion is smaller than 98% of the molecular weight of the color pigment and that the anionic part of the dispersion synergist has a similarity coefficient SIM of at least 0.5 with the similarity coefficient defined by:wherein,

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