Abstract: Multilayer pearlescent pigments with a silver interference color, based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a high-index layer A having a refractive index n ?1.8 b) a low-index layer B having a refractive index n <1.8 c) a high-index layer C having a refractive index n ?1.8 and also d) optionally an outer protective layer D. The multilayer pearlescent pigments have the indices D10, D50, D90 from the cumulative frequency distribution of the volume-averaged size distribution function, with a span ?D of 0.7 -1.4, the span ?D being calculated in accordance with the formula ?D =(D90 - D10)/D50. The invention further relates to a method for producing these multilayer pearlescent pigments, and also to their use.

Abstract: Multilayer pearlescent pigments based on platelet-shaped transparent substrates with an optically active coating, where the optically active coating includes at least a) a nonabsorbing high-index layer A having a refractive index n?1.8, b) a low-index layer B having a refractive index n<1.8 having an optical layer thickness >150 nm, c) an absorbing high-index layer C having a refractive index n?1.8 and also, d) optionally an outer protective layer D, wherein the multilayer pearlescent pigments have a cumulative frequency distribution of the volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D of 0.7-1.4, the span ?D being calculated in accordance with the formula ?D=(D90?D10)/D50. The disclosure further relates to a method for producing these multilayer pigments, and to their use.

Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the optically active coating includes at least a) an absorbing high-index layer A having a refractive index n?1.8 b) a low-index layer B having a refractive index n<1.8 c) a high-index layer C having a refractive index n?1.8 and also d) optionally at least one outer protective layer D and where the multilayer pearlescent pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.

Abstract: Multilayer pearlescent pigments comprising platelet-shaped transparent substrates provided with an optically active coating, where the coating includes at least (a) a nonabsorbing high-index layer A having a refractive index n?1.8, (b) a low-index layer B having a refractive index n<1.8, (c) a nonabsorbing high-index layer C having a refractive index n?1.8 and also (d) optionally at least one outer protective layer D where the pigments have a cumulative frequency distribution of a volume-averaged size distribution function, with the indices D10, D50, D90 and a span ?D in a range from 0.7-1.4, the span ?D being calculated in accordance with formula (I) ?D=(D90?D10)/D50??(I). The disclosure further relates to a method for producing these multilayer pearlescent pigments, and also to their use.

Abstract: Particles colored with at least one colorant, where the colored glass particles are glass platelets with an average diameter of 1 to 500 ?m and the colorants at least include at least one of metallic nanoparticles and metal oxides. The glass platelets are planar and the colorants are present in a concentration from 1% to 55% by weight, based on the total weight of the colored glass platelets. The disclosure further relates to a method to a method for producing the colored glass particles and to the use thereof.

Abstract: The invention relates to an aqueous coating composition containing at least one water-compatible film-forming agent and aluminum pigments that are provided with at least one inorganic anti-corrosion layer, wherein the thickness of the aluminum pigments provided with at least one inorganic anti-corrosion layer averages less than 160 nm. The invention further relates to a process for the production of such a coating composition and to the use of such a coating composition and to objects coated with said coating composition.

Abstract: The invention relates to metallic effect pigments having a plateletlike metal core and, surrounding the plateletlike metal core, a homogeneous synthetic resin coating, the synthetic resin coating comprising polyacrylate and/or polymethacrylate and also organofunctional silane. The invention further relates to a process for preparing such metallic effect pigments, and to their use.

Abstract: The invention relates to copper-containing metal pigments, wherein the copper-containing metal pigments have an elemental copper content of at least 50 wt. %, relative to the total weight of the uncoated copper-containing metal pigment, wherein the copper-containing metal pigments have at least one enveloping metal oxide layer and at least one enveloping chemically non-reactive plastic layer, wherein the sum of the amounts of the at least one chemically non-reactive plastic layer and of the at least one metal oxide layer lies in a range of from 10 to 50 wt. %, relative to the weight of the uncoated metal pigment, and the weight ratio of the at least one metal oxide layer to the at least one chemically non-reactive plastic layer lies in a range of from 1:2 to 1:20. The invention furthermore relates to a method for producing these pigments and the use thereof.

Abstract: The present invention relates to a weather-resistant pearlescent pigment which consists of a platelet-shaped substrate coated with one or more highly refractive metal oxides, the platelet-shaped substrate being selected from the group consisting of synthetic mica flakes, glass flakes, SiO2 flakes, Al2O3 flakes, synthetic boehmite flakes, BiOCl flakes and mixtures thereof, and a top layer, wherein the top layer consists of the following layers: a) a cerium-containing layer, selected from the group consisting of cerium oxide, cerium hydroxide, hydrated cerium oxide, and mixtures thereof, the cerium-containing layer being applied directly to the highly refractive metal oxide layer, and b) an organic-chemical compatibilizing layer, which comprises the reaction products of oligomeric silanes, wherein the oligomeric silanes have one or more amino groups, the organic-chemical compatibilizing layer being applied directly to the cerium-containing layer a).

Abstract: A silver-colored pigment is provided having a nonmetallic platelet-shaped substrate and at least one ilmenite-containing coating, wherein the nonmetallic platelet-shaped substrate is a nonmetallic platelet-shaped synthetic substrate and the amount of iron compounds, calculated as elemental iron, in the pigment is less than 5.0% by weight, based on the total weight of the pigment. Processes for preparing the pigment also are provided.

Abstract: The present disclosure is directed to a pigment preparation comprising aluminum effect pigments, a solvent and at least one additive, wherein the aluminium effect pigments have a d98 value of the volume averaged particle size distribution curve of less than 15 ?m, the at least one additive is a phosphorous containing additive, and the solvent has a viscosity equal to or more than 1.8 mPa's at 25° C. The disclosure is further directed to an ink jet printing ink as well the use thereof.

Abstract: A pigment preparation with metallic effect pigments in compacted form, the pigment preparation including the following components: a) 60%-95% by weight of at least one metallic effect pigment which has at least one low-refractive-index layer (low-index layer) on the metallic core of the metallic effect pigment, the low-index layer comprising or consisting of at least one inorganic component, b) 0.5%-40% by weight of a binder which is free from styrene groups, has an acid number of 150-500 mg KOH/g binder, and a melting point or melting range which lies in the range of 120-200° C., c) a residual moisture content in the range of 0%-15% by weight of at least one of water, organic solvent and a solvent mixture and d) optionally neutralizing agent(s). The disclosure further relates to a method for producing the pigment preparation and also to the use thereof.

Abstract: The invention relates to metallic effect pigment, the metallic effect pigment having at least one diffractive structure and at least one layer which comprises metal nanoparticles and metal oxide phase, the metal of the metal oxide phase and the metal of the metal nanoparticles in this at least one layer being identical. The invention further relates to a process for preparing these metallic effect pigments, to a coating composition, and to a coated article.

Abstract: The invention relates to lamina-like iron pigments produced by deformation of carbonyl iron powder, the lamina-like iron pigments having a size distribution with a D50 value in a range of from 3 to 16 ?m and a size/thickness ratio in a range of from 2 to 50. The invention furthermore relates to a magnetorheological fluid which contains the lamina-like iron pigments according to the invention, as well as to a device which contains the magnetorheological fluid.

Abstract: The present disclosure is directed to a pigment preparation comprising aluminum effect pigments, a solvent and at least one additive, wherein the aluminium effect pigments have a d98 value of the volume averaged particle size distribution curve of less than 15 ?m, the at least one additive is a phosphorous containing additive, and the solvent has a viscosity equal to or more than 1.8 mPa's at 25° C. The disclosure is further directed to an ink jet printing ink as well the use thereof.

Abstract: The invention relates to a metallic effect pigment selected from platelet-shaped aluminum, platelet-shaped metallic pigments having a copper fraction of 60% to 100% by weight, and mixtures thereof, having a coating of silicon oxide SiOx, where x is a number from 1 to 2, where the coated metallic effect pigment comprises metal cations and phosphorus- and/or sulfur-containing anions present independently of one another on the metallic effect pigment surface and/or in the silicon oxide layer SiOx, and the element ratio in atomic fractions of metal cation MC and phosphorus P and/or sulfur S to silicon Si is defined by formulae (I) and (II): 100%×(MC+P)/Si??(I) and/or 100%×(MC+S)/Si??(II) and being in total in a range from 0.5% to 35%. The invention further relates to the coated metallic effect pigments producible via the method of the invention, and to the use thereof.

Abstract: The invention relates to a method for coating metallic effect pigments with silicon oxide, in which alkoxysilane(s) and/or silicon halide(s) in organic solvent are reacted with water in the presence of metallic effect pigments, where the reaction includes at least two steps, where (a) the reaction is carried out with addition of acid in a first step and with addition of base in a second step or where (b) the reaction is carried out with addition of base in a first step and with addition of acid in a second step. The invention further relates to the coated metallic effect pigments producible by way of the method of the invention, and also to the use thereof.

Abstract: The invention relates to metallic paint comprising water and/or organic solvent and also at least one film-forming agent, at least one organofunctional silane, and at least one metallic effect pigment, the metallic effect pigment being a leafing aluminum pigment. The invention also relates to a process for preparing the metallic paint of the invention, and its use. Also, furthermore, an article painted with the metallic paint of the invention, and a vehicle finish.

Abstract: The present disclosure is directed to a pigment preparation comprising aluminum effect pigments, a solvent and at least one additive, wherein the aluminum effect pigments have a d98 value of the volume averaged particle size distribution curve of less than 15 ?m, the at least one additive is a phosphorous containing additive, and the solvent has a viscosity equal to or more than 1.8 mPa's at 25° C. The disclosure is further directed to an ink jet printing ink as well the use thereof.

Abstract: The present invention relates to a cosmetic formulation including a cosmetically acceptable medium and at least one silver-colored pigment, the silver-colored pigment including a nonmetallic platelet-shaped substrate and at least one ilmenite-containing coating.