The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C.sup.13 NMR MAS relaxation measurements, the relaxation of the .sup.13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T.sub.1.sup.S and a long average relaxation time T.sub.1.sup.l, and T.sub.1.sup.l being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of T.sub.max=100 to 150° C. and an enthalpy ΔH associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5° C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.

The invention is directed to electrically conductive particles comprising a metallic core, a dielectric layer encapsulating said metallic core, and a silver containing outer-layer, wherein said metallic core comprises or consists of elemental metal selected from the group consisting of aluminum, copper, iron, nickel, zinc, and alloys, and mixtures thereof, said dielectric layer comprises at least one metal oxide selected from the group consisting of the group consisting of silicon oxide, aluminum oxide, titanium oxide, zirconium oxide, tin oxide, organic polymer, and mixtures thereof, wherein said silver containing layer is a continuous and opaque layer, wherein a silver ion coordinating layer is arranged between said dielectric layer and said silver containing layer and, optionally a further outer surface modification layer in amount of 0 to 3 wt.-%, based on the total weight of the electrically conductive particles. The invention is also directed to a composition and an article comprising the electrically conductive particles as well as to a method for producing said electrically conductive particles.

The invention relates to a surface-modified effect pigment comprising particular additives and to the production thereof. The present invention further provides a nail varnish composition comprising a) at least one effect pigment that has been surface-modified with a starting material (additive), where the effect pigment comprises a substrate in platelet form and optionally at least one coating applied to the substrate, b) at least one hydrocarbon resin as binder, and c) at least one solvent or solvent mixture, where the starting material (additive) for surface modification of the effect pigment is at least one compound taken from the group consisting of phosphoric ester-containing, phosphonic ester-containing, phosphonic acid-containing, fatty acid-containing and/or silane-containing compounds or mixtures thereof.

The present invention relates to colored effect pigments, in particular to those containing an organic color pigment layer, to a preparation method thereof and to the use of these pigments especially in a composition comprising the colored effect pigments.

The invention relates to coated effect pigments, wherein the coating comprises a binder which is suitable for powder paints. They comprise a crystalline and an amorphous fraction which is determined by C.sup.13 NMR MAS relaxation measurements, the relaxation of the .sup.13C cores being fitted as a biexponential relaxation according to the formula (II) and the degree of crystallinity c being in a range between 40 to 85%, and relaxation having a short average relaxation time T.sub.1.sup.S and a long average relaxation time T.sub.1.sup.I, and T.sub.1.sup.I being in a range of from 65 to 130 s. The effect pigments coated according to the invention have at least one endothermic peak with a maximum from a range of T.sub.max=100 to 150 C. and an enthalpy H associated with said peak from a range of 15 J/g to 80 J/g in DSC at a feed speed of 5 C./min, the enthalpy being calculated relative to the amount of the binder. The binders are applied to the effect pigment by way of spontaneous precipitation.

[00001]$\begin{array}{cc}M\left(t,M_0,a,c,T_1^s,T_1^l\right)=M_0.Math.\left[\left(1-c\right).Math.\left(1-a.Math.e^{-\left(\frac{t}{T_1^s}\right)}\right)+c.Math.\left(1-a.Math.e^{-\left(\frac{t}{T_1^l}\right)}\right)\right]& \left(\mathrm{II}\right)\end{array}$

A main object of the present invention to provide a coated pigment that is composed of a composite particle comprising a silicon compound coated on the surface of a metal particle, and that can be dispersed with relatively few aggregates.

The present invention relates to a coated pigment comprising a composite particle containing a metal particle and one or two or more coating layers on the surface of the metal particle, wherein (1) at least one of the coating layers is a silicon compound-containing layer, and (2) the proportion of aggregates formed by adhesion of at least four of the composite particles with each other is not more than 35% by number.

A nanoparticle composition comprising a substrate comprising a metal oxide component and an aluminum oxide component; and a metallocene olefin polymerization catalyst component coupled to the substrate is disclosed. The metal oxide component is homogenously dispersed throughout the nanocomposite composition.

The present invention relates to a particularly effective protective coating for metallic objects, the coating method, and the special applications thereof. The particularly high protective effect is achieved by the adaptation of the inorganic fraction and the organic polymer fraction of the coating to the specific surface of the object. Further adjustments of the coating can be used for further optimization, for example of the protection properties or other product properties.

Provided are a metal pigment containing novel composite particles that have not been seen in conventional technologies and a method for manufacturing a metal pigment having reduced flocculation. The problem is solved by a metal pigment containing metal particles and composite particles having one or more coating layers formed on surfaces of the metal particles, or the like, the metal pigment being characterized in that (1) the composite particles have a flaky shape, (2) a volume-based diameter D50 is 0.1 to 30 m when a particle size distribution of the composite particles is measured by a laser diffraction type particle size distribution meter, and (3) the composite particles have an average thickness of 15 to 300 nm.

This invention involves a coated flaky metal effect pigment comprising a metal effect flake as substrate coated by the following consecutive coating sequences: a) optionally a discontinuous or a continuous layer of Mo-oxide, b1) an inorganic metal oxide layer comprising mainly SiO.sub.2, c1) a hybrid layer comprising SiO.sub.2 modified by a diphenyl silane, a phenylsilane or mixtures thereof or c2) a hybrid layer comprising SiO.sub.2 modified by a diphenyl silane, a phenylsilane or mixtures thereof, b2) an inorganic metal oxide layer comprising mainly SiO.sub.2, and d) optionally a further top-coat of organofunctional silanes, titanates, aluminates or zirconates.