| abstract |
The present invention relates to a composition comprising a polymer skeleton having 10 to 90% by weight of polymer skeleton and 90 to 10% by weight of macromonomer side chains attached to the skeleton and having a skeleton or macromolecule selected from the group consisting of aromatic ester groups, aromatic amine groups and quaternary ammonium groups, To a polymer dispersant for a pigment based on an acrylic graft copolymer having a weight average molecular weight of 3000 or more and having at least about 1% by weight of a pigment fixer attached to a monomer. These materials are capable of dispersing a wide variety of pigments, being useful in oily coatings, improving pigment usage efficiency, lowering paint viscosity and reducing volatile organic solvent emissions. |