Abstract: A process for the production of base coat/clear coat multi-layer coatings in an A? color shade wherein the base coat layer is applied in a first layer from a water-borne base coat AB and in a second layer from a water-borne base coat A with low hiding power and having a color shade A?, wherein the water-borne base coat AB is a mixture of the water-borne base coat A and a water-borne base coat B with sufficient hiding power.

Abstract: A process for producing multi-layer coatings in light metallic color shades and reducing UV transmission there-through comprising the successive steps of: (1) applying a 10 to 30 ?m thick base coat layer to a pre-coated substrate, (2) applying a clear coat layer onto the base coat layer, and (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied from an unmodified water-borne metallic base coat having a ratio by weight of pigment to resin solids of 0.3:1 to 0.45:1, wherein the pigment content consists of 90% to 100% by weight of at least one non-leafing aluminum pigment with a platelet thickness over 100 to 500 nm and 0 to 10% by weight of at least one pigment different from aluminum pigments, wherein the pigment(s) different from aluminum pigments are selected in such a way that the multi-layer coating obtained exhibits a brightness L* (according to CIEL*a*b*, DIN 6174), of at least 80 units.

Abstract: A process for the production of multi-layer coatings comprising the successive steps: 1) applying an 8 to 20 ?m thick coating layer from an aqueous coating composition A onto a substrate provided with an EDC primer, 2) applying a 5 to 15 ?m thick base coat layer from an aqueous coating composition B onto the previously applied coating layer, 3) applying a clear coat layer onto the base coat layer, 4) jointly curing the three coating layers, wherein coating compositions A and B being different from each other and wherein the coating composition A contains at least one metal platelet pigment having a thickness from 10 to 100 nm in a proportion corresponding to a pigment/resin solids ratio by weight from 0.06:1 to 0.2:1.

Abstract: A process for the production of multi-layer coatings in A? color shades, comprising the successive steps: 1) applying a base coat layer in a total process film thickness in the range from 10 to 35 ?m to a substrate provided with an EDC primer, 2) applying a clear coat layer onto the base coat layer, 3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer of a modified water-borne base coat modAB prepared by mixing an unmodified, water-borne base coat A with an unmodified water-borne base coat B and with a pigment-free admixture component and in a second layer of the unmodified water-borne base coat A.

Abstract: A process for the production of special effect multi-layer coatings, comprising the successive steps: (1) applying a 10 to 30 ?m thick base coat layer onto a substrate provided with an EDC primer, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer and in a second layer; the first layer comprises a modified water-borne base coat produced by mixing an unmodified water-borne base coat with an admixture component and the second layer comprises the unmodified water-borne base coat, wherein the unmodified water-borne base coat has a ratio by weight of pigment content to resin solids content of 0.05:1 to 0.6:1 and wherein the pigment content of the unmodified water-borne base coat comprises at least one metal flake pigment having a thickness of 10 to 100 nm corresponding to a proportion of 0.1 to 5 wt.

Abstract: A process for the production of multi-layer coatings comprising the successive steps: 1) applying an 8 to 20 ?m thick coating layer from an aqueous coating composition A onto a substrate provided with an EDC primer, 2) applying a 5 to 15 ?m thick base coat layer from an aqueous coating composition B onto the previously applied coating layer, 3) applying a clear coat layer onto the base coat layer, 4) jointly curing the three coating layers, wherein coating compositions A and B being different from each other and wherein the coating composition A contains at least one metal platelet pigment having a thickness from 10 to 100 nm in a proportion corresponding to a pigment/resin solids ratio by weight from 0.06:1 to 0.2:1.

Abstract: A process for the production of multi-layer coatings in A? color shades, comprising the successive steps: 1) applying a base coat layer in a total process film thickness in the range from 10 to 35 ?m to a substrate provided with an EDC primer, 2) applying a clear coat layer onto the base coat layer, 3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer of a modified water-borne base coat modAB prepared by mixing an unmodified, water-borne base coat A with an unmodified water-borne base coat B and with a pigment-free admixture component and in a second layer of the unmodified water-borne base coat A.

Abstract: A process for the production of base coat/clear coat multi-layer coatings in an A? color shade wherein the base coat layer is applied in a first layer from a water-borne base coat AB and in a second layer from a water-borne base coat A with low hiding power and having a color shade A?, wherein the water-borne base coat AB is a mixture of the water-borne base coat A and a water-borne base coat B with sufficient hiding power.

Abstract: A process for producing multi-layer coatings in light metallic color shades and reducing UV transmission there-through comprising the successive steps of: (1) applying a 10 to 30 ?m thick base coat layer to a pre-coated substrate, (2) applying a clear coat layer onto the base coat layer, and (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied from an unmodified water-borne metallic base coat having a ratio by weight of pigment to resin solids of 0.3:1 to 0.45:1, wherein the pigment content consists of 90% to 100% by weight of at least one non-leafing aluminum pigment with a platelet thickness over 100 to 500 nm and 0 to 10% by weight of at least one pigment different from aluminum pigments, wherein the pigment(s) different from aluminum pigments are selected in such a way that the multi-layer coating obtained exhibits a brightness L* (according to CIEL*a*b*, DIN 6174), of at least 80 units.

Abstract: A process for the production of an aqueous polyurethane urea resin dispersion with a carboxyl number of 10 to 50 mg KOH/g resin solids and a ketone content of 5 to 10 wt. % relative to resin solids, comprising the steps: 1) producing a carboxylate-functional, non-gelled, water-dispersible polyurethane prepolymer with a free isocyanate group content of 1.5 to 3 wt.

Abstract: A process for the production of multi-layer coatings, comprising the successive steps: 1) applying a base coat layer in a total process film thickness in the range from 10 to 35 ?m to a substrate provided with an EDC primer, 2) applying a clear coat layer onto the base coat layer, 3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer of a modified water-borne base coat prepared by mixing an unmodified water-borne base coat having a black/white opacity of >25 ?m with a pigmented admixture component and in a second layer of the unmodified water-borne base coat.

Abstract: A process producing multi-layer coatings in light metallic color shades, comprising the successive steps: (1) applying a 5 to 20 ?m thick base coat layer to a pre-coated substrate, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied from an unmodified water-borne metallic base coat having a ratio by weight of pigment to resin solids of 0.3:1 to 0.45:1, wherein the pigment content consists 60 to 100% by weight of at least one non-leafing aluminum pigment with a platelet thickness over 100 to 500 nm and 0 to 40% by weight of at least one pigment different from aluminum pigments, wherein the pigment(s) different from aluminum pigments are selected in such a way that the multi-layer coating obtained exhibits a brightness L* (according to CIEL*a*b*, DIN 6174), of at least 80 units.

Abstract: A process for the production of special effect multi-layer coatings, comprising the successive steps: (1) applying a 10 to 30 ?m thick base coat layer onto a substrate provided with an EDC primer, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer and in a second layer; the first layer comprises a modified water-borne base coat produced by mixing an unmodified water-borne base coat with an admixture component and the second layer comprises the unmodified water-borne base coat, wherein the unmodified water-borne base coat has a ratio by weight of pigment content to resin solids content of 0.05:1 to 0.6:1 and wherein the pigment content of the unmodified water-borne base coat comprises at least one metal flake pigment having a thickness of 10 to 100 nm corresponding to a proportion of 0.1 to 5 wt.

Abstract: A process for the production of multi-layer coatings comprising the successive steps: 1) applying an 8 to 20 ?m thick coating layer from an aqueous coating composition A onto a substrate provided with an EDC primer, 2) applying a 5 to 15 ?m thick base coat layer from an aqueous coating composition B onto the previously applied coating layer, 3) applying a clear coat layer onto the base coat layer, 4) jointly curing the three coating layers, wherein coating compositions A and B being different from each other and wherein the coating composition A contains at least one metal platelet pigment having a thickness from 10 to 100 nm in a proportion corresponding to a pigment/resin solids ratio by weight from 0.06:1 to 0.2:1.

Abstract: A process for the production of multi-layer coatings, comprising the successive steps: 1) applying a 10 to 35 ?m thick base coat layer onto a substrate provided with an EDC primer, 2) applying a clear coat layer onto the base coat layer, 3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer and in a second layer; the first layer comprises a modified water-borne base coat produced by mixing an unmodified water-borne base coat with a pigmented admixture component and the second layer comprises the unmodified water-borne base coat, wherein the admixture component contains at least one polyisocyanate, has a ratio by weight of pigment content to resin solids content of 0.05:1 to 0.5:1 and is mixed into the unmodified water-borne base coat in a ratio by weight of 0.

Abstract: A process producing multi-layer coatings in light metallic color shades, comprising the successive steps: (1) applying a 5 to 20 ?m thick base coat layer to a pre-coated substrate, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied from an unmodified water-borne metallic base coat having a ratio by weight of pigment to resin solids of 0.3:1 to 0.45:1, wherein the pigment content consists 60 to 100% by weight of at least one non-leafing aluminum pigment with a platelet thickness over 100 to 500 nm and 0 to 40% by weight of at least one pigment different from aluminum pigments, wherein the pigment(s) different from aluminum pigments are selected in such a way that the multi-layer coating obtained exhibits a brightness L* (according to CIEL*a*b*, DIN 6174), of at least 80 units.

Abstract: A process for the production of special effect multi-layer coatings, comprising the successive steps: (1) applying a 10 to 30 ?m thick base coat layer onto a substrate provided with an EDC primer, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied in a first layer and in a second layer; the first layer comprises a modified water-borne base coat produced by mixing an unmodified water-borne base coat with an admixture component and the second layer comprises the unmodified water-borne base coat, wherein the unmodified water-borne base coat has a ratio by weight of pigment content to resin solids content of 0.05:1 to 0.6:1 and wherein the pigment content of the unmodified water-borne base coat comprises at least one metal flake pigment having a thickness of 10 to 100 nm corresponding to a proportion of 0.1 to 5 wt.

Abstract: A process for the generation of a computer image of a coated, three-dimensional object involves applying at least a relevant coating layer on at least two test panels under the influence of a set of coating parameters which differs with respect to each panel; taking a plurality of measurements of at least one optical surface property as a function of the set of coating parameters selected on application of the relevant coating layer on each panel; storing the optical data in a datafile with assignment of the relevant set of coating parameters; facetting the visible surface(s) of a three-dimensional object by computer into a sufficient number of flat polygonal areas each being sufficiently small for the sufficiently accurate description of the surface topography; assigning the relevant set of coating parameters and associated optical data in each case to each individual polygonal area by computer; and assembling the polygonal areas into a computer image of the three-dimensional object.

Abstract: A process for the generation of a computer image of a coated, three-dimensional object involves applying at least a relevant coating layer on at least two test panels under the influence of a set of coating parameters which differs with respect to each panel; taking a plurality of measurements of at least one optical surface property as a function of the set of coating parameters selected on application of the relevant coating layer on each panel; storing the optical data in a datafile with assignment of the relevant set of coating parameters; facetting the visible surface(s) of a three-dimensional object by computer into a sufficient number of flat polygonal areas each being sufficiently small for the sufficiently accurate description of the surface topography; assigning the relevant set of coating parameters and associated optical data in each case to each individual polygonal area by computer; and assembling the polygonal areas into a computer image of the three-dimensional object.