Eckart Gmbh

Ralph Schneider

Günter Kaupp

Michael Grüner

Wolfgang Herzing

Bernhard Geissler

Martin Fischer

Frank Henglein

Ulrich Schmidt

Dirk Schumacher

Oliver Struck

Ralf Moos

Klaus Greiwe

Peter Krüger

Oliver Bedford

Katrin Steinbach

Michael Gruener

Jasmin Bleisteiner

Simone Kreppner

Olga Isakin

Kerstin Schindler

Monika Willert-Porada

Peter Krueger

Jens Depner

Bernhard GEIßLER

Simone Stein-Hofmann

Günther Kaupp

Composites comprising an exfoliated graphite support material having a degree of graphitization g in an range of 50 to 93%, obtained by XRD Rietveld analysis, which is coated with ZnO nanoparticles. These composites are produced by three different methods: A) (syn) the method comprises the following consecutive steps: i) a Zn(II)salt is dissolved in a solvent ii) graphite and a base are added simultaneously iii) the mixture is stirred under impact of ultrasound iv) the solvent is removed from the suspension or B) (pre) the method comprises the following consecutive steps: i) graphite is suspended in a solvent and exfoliated via impact of ultrasound ii) a Zn(II)salt and a base are added simultaneously forming nano-ZnO particles iii) the mixture is stirred iv) the solvent is removed from the suspension or C) (post) the method comprises the following steps: i) a Zn(II)salt and a base are mixed in a solvent in a first reactor forming nano-ZnO particles ii) graphite is exfoliated via impact of ultrasound in a second reactor iii) both suspensions of i) and ii) are mixed together iv) after step iii) the solvent is removed from the suspension. These coated composites may be tempered in a further step and again coated and again tempered.

ZnO nanoparticle coated exfoliated graphite composite, method of producing composite and use in Li-ion battery

The invention relates to effect pigments comprising artificial platelet-shaped substrates which have at least one optically active coating, where the effect pigments have a volume-averaged cumulative undersize distribution curve with the characteristic numbers D, Dand D, said cumulative undersize distribution curve having a span &#x394;D of 0.7-1.4, and the span &#x394;D being calculated in accordance with formula (I):&#x394;=()/&#x2003;&#x2003;(I),and the average thickness of the artificial platelet-shaped substrates being 500 nm to 2000 nm.

Effect pigments based on artificially produced substrates with a narrow size distribution

Pearlescent pigments including a largely transparent platelet-shaped substrate having a density &#x3c1;and at least one optically active coating having a density &#x3c1;, the substrate having an average size dof 3 to 8 &#x3bc;m and an average height hof 40 to 110 nm. The disclosure further relates to a method for producing the pearlescent pigments, and also to the use thereof.

Pearlescent pigments based on fine and thin substrates

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 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.

Coated pigments, method for the production and the use thereof, coating agent and article

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.

PVD-metallic effect pigments with diffractive structure and metal nanoparticles, process for preparing them and use thereof

A metallic effect pigment comprising at least three layers: and being situated within a range from 2 to 77 atom %, more particularly from 25 to 58 atom %. The disclosure further relates to processes for preparing this effect pigment and also to its use.

Multi-layer metallic effect pigments, process for their preparation and use

The invention relates to a metallic effect pigment, which metallic effect pigment has a substantially homogeneous chemical composition comprising at least one metal M and having an average content of oxygen of from 25 to 58 atomic percent, based on the total content of M and oxygen. The invention further relates to a method for the production of said metallic effect pigment.

Dark metal effect pigments produced by means of a physical vapour deposition (PVD) method

A platelet-shaped PVD metallic effect pigment having first and second outer faces, the platelet-shaped PVD metallic effect pigment having at least one PVD layer, the at least one PVD layer including elemental metal with clusters of elemental metal and metal oxide. The amounts of elemental metal in the first outer face and in the second outer face of the PVD metallic effect pigment are different from one another and they differ by at least 10 atom %. The disclosure further relates to a method for producing these platelet-shaped PVD metallic effect pigments, and to their use.

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Lauf, Germany

Ralph Schneider