The invention relates to a solid pigment preparation comprising a pigment
and a dispersant resin, wherein the composition comprises at least 35% by
weight of at least one pigment and at most 65% by weight of dispersant
resin, calculated on the combined weight of pigment and dispersant resin,
wherein the dispersant resin comprises a polymer backbone produced by
chain-reaction polymerization having pendent hydrophilic polyalkylene
oxide side groups, and wherein the pigment particles within the
preparation have average particle sizes in the range of 50 nm to 5,000
nm.