Eckart Gmbh

Eckart Gmbh & Co. Kg

Michael Grüner

Günter Kaupp

Dirk Schumacher

Ulrich Schmidt

Oliver Struck

Ralph Schneider

Thomas Schneider

Frank Henglein

Barbara Mendler

Christian Rummer

Stefan Engel

Peter Krüger

Thomas Voit

Katrin Steinbach

Christian Schramm

Jasmin Bleisteiner

Sebastian Höfener

Harald Weiss

Andreas Gipp

Hermann Birner

Jens Depner

Roland Albert

Günther Kaupp

Weather stable pearlescent pigment having a basic pearlescent with an interference color which comprises a transparent platelet-shaped substrate and at least one metal oxide layer with a refractive index >1.8 and on top of this basic pearlescent pigment a weather stabilizing top coating comprising at least one metal oxide and an organofunctional surface modification, wherein a) for a basic pearlescent pigment with silvery interference color the weather stabilizing top coating consists of a first metal oxide of a rare earth metal M1 from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and mixtures thereof, or b) for a basic pearlescent pigment with a colored interference color or a silvery interference color the weather stabilizing top coating comprises a first metal oxide of a rare earth metal M1 from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and mixtures thereof, and a second metal oxide from a second metal M2 from the group consisting of Si, Al, Zn, Mg, Zr, Sn and mixtures or combinations thereof, and in each case a) or b) the organofunctional surface modification comprises organofunctional silanes or water-based pre-condensated organofunctional silanes.

Weather stable pearlescent pigments

The present invention relates to red effect pigments including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one of metal oxide, metal hydroxide or metal oxide hydrate, the metal ions of the metal oxide, metal hydroxide and/or metal oxide hydrate comprise at least two different metal ions selected from the group of metals consisting of Fe, Sn, Ti and Zr, and to a process for production thereof and to the use of the red effect pigments.

Red-coloured decorative pigments with high chroma and high brilliancy, method for their production and use of same

The present invention relates to gold-colored effect pigment including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one spacer layer. The invention further relates to a process for production of and to the use of the gold-colored effect pigment.

Gold-coloured effect pigments having high chroma and high brilliancy, method for the production and use thereof

The invention relates to a transparent effect pigment which includes a non-metallic platelet-shaped substrate and a coating applied thereto, wherein the coating has a spacer layer. The invention further relates to a method for the production, as well as the use, of the transparent effect pigment.

Effect pigments having high transparency, high chroma and high brilliancy, method for the production and use thereof

The invention relates to an absorbent effect pigment including a nonmetallic substrate in platelet form and a coating applied thereto, wherein the coating includes at least one spacer layer. The invention further relates to a process for production of and to the use of the absorbent effect pigment.

Effect pigments with high chroma and high brilliancy, method for the production and use thereof

The invention relates to a metal effect pigment including a metallic substrate in platelet form and a coating applied thereto, wherein the coating includes a spacer layer. The invention further relates to a process for production of and to the use of the metal effect pigment.

Metal effect pigments with high chroma and high brilliancy, method for the production and use thereof

The invention relates to pearlescent pigments comprising a largely transparent platelet-shaped synthetic substrate having a density &#x3c1;and at least one optically active coating having a density &#x3c1;, the substrate having an average size dfrom a range from 2.0 &#x3bc;m to 8.0 &#x3bc;m and an average height hfrom a range from 40 nm to 110 nm and the total lead content of the pearlescent pigments is &#x2264;10 ppm. The invention further relates to a method for producing the pearlescent pigments, and also to the use thereof.

Pearlescent pigments on the basis of fine and thin synthetic substrates

The invention relates to a pigment which reflects IR radiation, comprising an IR-reflecting core, the IR-reflecting core being provided with a substantially enveloping coating which is transparent to IR radiation, and in that the IR-reflecting pigment is substantially white. The invention further relates to a process for producing these pigments and also to their use.

White pigment reflecting IR radiation, production and use thereof

The invention relates to pigments with a non-metallic substrate, wherein the pigments have at least one barrier layer that selectively absorbs light and/or electrons and at least one photocatalytically active layer, wherein the at least one barrier layer is arranged between the non-metallic substrate and the at least one photocatalytically active layer. The invention furthermore relates to a method for producing the pigments and to a coating agent.

Pigment with photocatalytic activity, method for the production thereof and coating agent

The present invention relates to weather-resistant pearlescent pigment, comprising a coated or uncoated platelet-shaped substrate which is selected from the group consisting of synthetic mica platelets, glass platelets, SiOplatelets, AlOplatelets, synthetic boehmite platelets, BiOCl platelets and mixtures thereof, a chromophoric coating with at least one highly refractive metal oxide, and a top layer, wherein the top layer comprises the following layer sequence:a) a first layer made of tin oxide and/or tin hydroxide and/or hydrated tin oxide, b) a second cerium-containing layer which comprises cerium oxide and/or cerium hydroxide and/or hydrated cerium oxide, c) an organic-chemical coating applied to the cerium-containing layer which contains oligomeric silanes or consists of them, wherein the oligomeric silanes have one or more amino groups and the oligomeric silanes are chemically bonded with the cerium-containing layer. The invention further relates to a process for the production and use of these pearlescent pigments.

Weather-resistant pearlescent pigments, process for the production and use thereof

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.

Highly lustrous silver-colored pigments with high opacity and metallic appearance, process for the preparation thereof and use of same

The present invention relates to an effect pigment comprising a plate-shaped non-metallic substrate and at least one copper-containing coating, wherein the average particle size Dof the effect pigment is more than 5 &#x3bc;m and the copper content of the effect pigment is in a range from 3 to 70 wt.-%, relative to the total weight of the effect pigment. The invention furthermore relates to a method for producing the latter and use of the effect pigment in anti-fouling coatings.

Plate-shaped effect pigment comprising a copper-containing coating, method for the production thereof, and use thereof

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.

Cosmetic formulations comprising high gloss non-metallic silver-colored pigments

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, SiOflakes, AlOflakes, 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).

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Auerbach, Germany

Michael Grüner