| abstract |
(57) [Summary] [Purpose] It has a wide dispersion performance for various pigments, and in a high-concentration pigment dispersion, sufficient performance is exhibited in the fluidity of the dispersion and the tinting strength of paint and ink. Have, Also, to develop a pigment dispersant that does not reduce the adhesion between the coating film and the metal surface in paints and inks applied to metals. [Structure] "A method for producing a pigment dispersant in which a polyalkylene polyamine compound is reacted with a carboxyl group-terminated polylactone compound obtained by ring-opening polymerization of a lactone compound using a hydroxycarboxylic acid as an initiator". [Effect] It has a wide dispersion performance for various pigments, and in a high-concentration pigment dispersion, it has sufficiently satisfactory performance in terms of fluidity of the dispersion and coloring power of paint and ink. Moreover, it has been possible to develop a pigment dispersant that does not reduce the adhesion between the coating film and the metal surface in paints and inks applied to metals. |