The influence of lanolin derivatives on dispersed systems, 1. The dispersion of pigments in nonaqueous liquids
L. I. Conrad , H. F. Maso , Shirley A. DeRagon

Synopsis

The dispersing activity of several lanolin derivatives is studied by means of modified wet and flow point procedures which are described in detail. Sedimentation tests and microscopic examination are used as supplementary aids. These procedures reveal significant pigment wetting and deflocculating activity for lanolin derivatives when used as additives. The wet and flow point measurements provide quantitative data which can be used to determine efficient additive\/pigment ratios for each system studied.

Because of the specific action of the wetting additives no single lanolin derivative can be recommended for all pigment\/vehicle systems, but an ideal dispersing aid might utilize a combination of these surface active materials.

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