Abstract: The present invention refers to a mixing scheme containing a plurality of pigmented base paint compositions having defined colors and optionally one or more non-pigmented base paint compositions comprising at least one rheology controlled base paint composition containing at least one pigment selected from the group consisting of inorganic pigments, di-keto-pyrrolo-pyrrole type pigments, organic liquid crystal type pigments and carbon black and having the following rheology profile (1) an initial viscosity V1 at 20° C. of 65 Pa s or greater when measured at a shear rate of 10?3 s?1, (2) a viscosity V2 at 20° C. when measured at a shear rate of 10?3 s?1 immediately after subjecting to a shear rate of at least 15 s?1 whereby the viscosity V2 is 700 Pa s or less and is less than or equal to 70% of V1; (3) 24 hours after subjected by shaking to a shear rate of at least 15s?1 a viscosity V3 at 20° C.

Abstract: The present invention refers to a mixing scheme containing a plurality of pigmented base paint compositions having defined colors and optionally one or more non-pigmented base paint compositions comprising at least one rheology controlled base paint composition containing at least one pigment selected from the group consisting of inorganic pigments, di-keto-pyrrolo-pyrrole type pigments, organic liquid crystal type pigments and carbon black and having the following rheology profile

Abstract: A process for refinishing a motor vehicle byselecting and mixing two or more pigmented base paints from a series of master colors, each base paint having a hydroxyl functional polymer selected from the group consisting of an acrylic addition polymer, a polyester polymer and mixtures thereof, having a number average molecular weight of 600 to 10 000 and a hydroxyl value of 5 to 500, andadding a hardener of a polyisocyanate crosslinker to react and crosslink with said hydroxyl functional polymer in each base paint to form a thermosetting pigmented composition, the improvement in the process comprising;adding a catalyst mixture of a tin catalyst and a polyfunctional thiol having at least three thiol groups per molecule in which the ratio of the number of moles of thiol groups from the polyfunctional thiol to the number of moles of tin from the tin catalyst is 1:1 to 500:1, to form a catalyzed pigmented coating composition having a more constant irrespective of the pigments contained in the two or more basic pain