Patent · US Active

Non-aqueous pigment dispersions containing specific dispersion synergists

US7704312B2 · kind B2 · utility

3Cited by

9References

17Claims

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	Apr 27, 2010
Priority date	—
Expiry date	Feb 5, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D17/002
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A non-aqueous pigment dispersion includes a color pigment, a polymeric dispersant, and a dispersion synergist in a dispersion medium wherein the dispersion synergist is represented by Formula (I):wherein AR1 and AR2 represent a substituted or unsubstituted aromatic group, and R represents a substituted or unsubstituted aliphatic group, with the proviso that one of R, AR1, and AR2 contains at least one carboxylate anion and that the molecular weight of the anionic part of the dispersion synergist is smaller than 98% of the molecular weight of the color pigment. Also, methods of preparing the non-aqueous pigment dispersions.

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