PIGMENT COMPOSITION COMPRISING DISPERSANT OF MODIFIED BLOCK COPOLYMER

摘要

PROBLEM TO BE SOLVED: To provide a composition comprising a dispersant of a modified block copolymer and a dispersible inorganic or organic pigment. SOLUTION: The block copolymer is modified by a salt-forming group. A pigment dispersion having improved characteristics is produced by adding a salt-forming component, e.g. a mono-, a bi- or a tricyclic sulfonic, carboxylic acid or phosphonic acid when monomer units containing amino groups are present in hydrophilic polymer blocks. The pigment composition is useful for preparing coating compositions, prints, images, inks or lacquers and other dispersion systems.