| abstract |
An aluminum pigment composition for water-base coating materials which comprises an aluminum pigment, a rheology modifier, and an organic solvent, characterized in that the organic solvent has a solubility parameter of 6 to 12 and exhibits a solubility of 30mass% or below in water at 20°C and that when the rheology modifier is added to a resin emulsion and the obtained mixture is subjected to viscosity determination with a Brookfield type viscometer, both viscosity (B 60 ) at a number of revolutions of 60 and viscosity (B 6 ) at a number of revolutions of 6 fall within the range of 0.3 to 30Pa⋅s and the B 6 /B 60 ratio, namely, thixotropic index is 1 to 60. |