Merck Patent Gmbh

Schlenk Metallic Pigments Gmbh

Kaiman Shimizu

Adalbert Huber

Yukitaka Watanabe

Fumiko Sasaki

Fabian Piech

Masahiko Yazawa

Tamio Noguchi

Frank Pfluecker

Yuichi Kubota

Keisuke Kawagoe

Gabriele Witte

The present invention relates to metallic luster pigments, to a process for production thereof and to the use of such metallic luster pigments.

Metallic luster pigments

The present invention relates to semitransparent pearlescent pigments, to processes for producing them, and to the use of such pearlescent pigments, where the pearlescent pigments comprise monolithically constructed substrate platelets composed of a metal oxide having an average thickness of 1 to 40 nm and a form factor, expressed by the ratio of the mean size to the average thickness, of at least 80, which are enveloped by at least one substantially transparent coating A composed of at least one low-index metal oxide and/or metal oxide hydrate, having a refractive index of less than 1.8, and at least one interference layer in the form of a coating B composed of at least one high-index metal oxide, having a refractive index of at least 1.8.

Pearlescent pigments, process for producing them, and use of such pigments

The present invention relates to pearlescent pigments, to a process of manufacturing such pearlescent pigments based on a wet oxidation step as well as to the use of such pearlescent pigments.

Pearlescent pigments obtained by wet oxidation

The present invention is related to magnetic pigments comprising a transparent flaky homogeneously composed substrate having two parallel major surfaces and a coating comprising a layered structure composed of a hematite and a magnetite layer, to a process for the production of said pigments as well as to their use.

Magnetic pigments

Magnetic pigments containing a transparent flaky homogeneously composed substrate having two parallel major surfaces and a coating containing maghemite, a process for the production of said pigments as well as their use.

Magnetic pigments comprising a flaky substrate and layer of maghemite

The present invention is related to brilliant black pigments comprising a flaky aluminum oxide substrate having a coating comprising a layered structure composed of a hematite and a magnetite layer, to a process for the production of said pigments, as well as to their use.

Brilliant black pigments

The present invention relates to a process for treating sol-gel capsules comprising a cosmetic or pharmaceutical active material with an inorganic material, as well as sol-gel capsules produced by a process according to the present invention and formulations comprising such sol-gel capsules.

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Roth, Germany

Kaiman Shimizu