Patent ID: 7932317

Claim:
A process for preparing an aqueous coating material with precisely defined shade and optical effect, comprising mixing modules differing in material composition and function and stored separately from one another shortly before application of the coating material, wherein the modules comprise: (I) at least one module comprising less than 5% by weight water that provides at least one of color and effect, comprising: (A1) at least one base color comprising less than 5% by weight water that imparts at least one of color and effect comprising: (a11) at least one binder, wherein the at least one binder is optionally water-soluble or water-dispersible; (a12) at least one pigment that imparts at least one of color and effect; and (a13) at least one organic solvent, wherein the at least one organic solvent is optionally water-miscible; and optionally, at least one of: (a14) at least one crosslinking agent; (a15) at least one auxiliary; and (a16) at least one additive; (II) at least one aqueous color module, comprising: (A2) at least one aqueous color-imparting base color, comprising: (a21) 10 to 80% by weight of at least one water-soluble or water-dispersible binder; (a22) 1 to 70% by weight of at least one inorganic color pigment or 1 to 30% by weight of at least one organic color pigment, optionally a combination of at least one organic color pigment and at least one inorganic color pigment; and (a23) 10 to 89% by weight water when 1 to 30% by weight of at least one organic color pigment is present, or 20 to 89% by weight water when 1 to 70% by weight of at least one inorganic color pigment is present; and optionally, at least one of: (a24) at least one organic solvent, wherein the at least one organic solvent is optionally water-miscible; (a25) at least one crosslinking agent; (a26) at least one auxiliary; and (a27) at least one additive; and (III) at least one pigment-free mixing varnish module, comprising: (B) at least one aqueous, pigment-free mixing varnish, comprising: (b1) at least one water-soluble or water-dispersible binder; and (b2) water; and optionally, at least one of: (b3) at least one crosslinking agent; (b4) at least one auxiliary; and (b5) at least one additive; and optionally: (IV) at least one pigment-free rheology module, comprising: (C) an aqueous medium, comprising: (c1) at least one rheology control additive; optionally, with the proviso that at least one of the at least one additives (a16), (a27), and (b5) further comprises the at least one rheology control additive (c1).