interfacial modifier as used herein the term u201c cationic interfacial modifier u201d means a cationic dispersant which acts as an antinucleation agent or a cationic surfactant which lowers the interfacial tension between the pigment particles and the molecules in the dispersing medium or any combination thereof the cationic interfacial modifier includes but is not limited to oligomeric compounds such as inorganic oligomers and other organic or inorganic polymeric compounds while not wishing to be bound by any particular theory of operation it is postulated that the cationic dispersant or cationic surfactant facilitates stable suspension of the pigment particles in the slurry of the invention by establishing a delocalized positive charge throughout the aqueous medium the pigment particles are thus electrostatically attracted to and separated by the cationically charged species and as a result do not aggregate to form larger particles that flocculate from the medium or form gels of a viscosity so high as to reduce the spreading ability of any coating containing the pigment this delocalized cationic charge throughout the dispersing medium in combination with the functional effects of the other ingredients such as the wetting effect of the nonionic wetting agent or the steric blocking effect of the nonionic polymer therefore facilitates suspension of the particles in the slurry and.