DISPERBYK-166 is a high molecular weight wetting and dispersing additive for organic pigments in solvent-borne systems. It is a solution of a high molecular weight block copolymer with pigment affinic groups. DISPERBYK-166 provides excellent wetting, dispersion and stabilization of organic pigments. It prevents the pigments from flocculating or settling out. This ensures color strength and uniformity. It also improves flow and leveling of coatings. DISPERBYK-166 is suitable for a variety of solvent-borne coating systems where excellent color acceptance and color strength is required.