Basf Aktiengesellschaft

Basf Se Corporation

Basf Corporation

Sun Chemical Corporation

Raimund Schmid

Norbert Mronga

Oliver Seeger

Aron Wosylus

Werner Ostertag

Helmut Schmidt

Juan A Gomez

Christoph Schwidetzky

Harald Ochmann

Claus Kaliba

Jorg Adel

Hermann Bidlingmaier

Raymond Ellinghoven

Patrice Bujard

Norbert Schneider

Harald Keller

Peter Schuhmacher

Frank Meyer

Peter Blaschka

Reinhold Rieger

Michael Veith

Steven Alan Jones

Wilma M Dausch

Reinhold Schlegel

Christof Kujat

Uwe Mauthe

Wolfgang Best

Juan Antonio Gonzalez Gomez

Arno B&ouml;hm

Rainer Henning

Paul Cao

Joerg Adel

Stefan Faber

Hans Rudolf Merstetter

Hans-Ulrich Reisacher

Thorsten Clemens

Christian Krueger

Juergen Walker

Eckehard Fritscher

Gabe Uzunian

Ellen Schmidt

J Org Adel

Carolyn Lavallee

Casper Mullertz

J&ouml;rg Adel

Steven Jones

James Carroll

S A Jones

The use of an effect pigment (a) comprising an aluminum-based substrate and an iron oxide coating having a red 1order interference color in combination with a colored absorption pigment (b) for producing a coating having enhanced coloristic properties, in particular enhanced chroma, lightness and hiding power, is provided. The pigment combination of (a) and (b) is suitable for coloring plastics, a fiber, a film and a coating composition such as a paint, a printing ink, a varnish or a powder coating, preferably an automotive, an architectural or an industrial coating composition.

Use of iron oxide coated aluminum flakes having red 1order interference color in coatings

The present invention relates to a coloured effect pigment, comprising a substrate made of aluminium or an aluminium alloy which is optionally coated with one or more passivation layers, and an aluminium-doped iron oxide layer.

Non-magnetizable effect pigments

An iron oxide containing effect pigment, and methods for producing and using the same are discussed. The iron oxide containing effect pigment may include an iron oxide coating in direct contact with a particulate substrate, which may have high levels of hematite, magnetite, or maghemite; and low amounts of toxic metals. A method for producing the pigment may include chemical vapor deposition of iron pentacarbonyl onto a particulate substrate. The iron oxide containing effect pigments may be incorporated into compositions, such as cosmetics.

Iron oxide containing effect pigments, their manufacture and their use

The present invention relates to a process for preparing a colored effect pigment, comprising: (i) coating aluminum-based substrate particles in an aqueous coating medium with at least one metal oxide layer, wherein the metal oxide is selected from a titanium oxide, an iron oxide, or any mixture thereof, (ii) providing a mixture of the coated aluminum-based substrate particles and a particulate inorganic non-metallic material in the aqueous coating medium by adding the particulate inorganic non-metallic material to the aqueous coating medium, and (iii) separating the mixture of the coated aluminum-based substrate particles and the particulate inorganic non-metallic material from the aqueous coating medium and subjecting the separated mixture to a thermal drying step so as to obtain a dry colored effect pigment material.

Process for preparing metal oxide coated aluminium effect pigments

The present invention relates to a process for preparing a coloured effect pigment, comprising the steps of (a) preparing in an aqueous coating medium at least one layer of a hydroxyl-containing metal oxide on a substrate, thereby obtaining in the aqueous coating medium a first coloured pigment material CPM1 comprising the substrate coated with the hydroxyl-containing metal oxide, wherein the substrate is made of aluminium or aluminium alloy which optionally comprises at least one passivating layer, and wherein the hydroxyl-containing metal oxide is a hydroxyl-containing iron oxide or a hydroxyl-containing titanium oxide or a mixture thereof, (b) providing the first coloured pigment material CPM1 in a liquid post-treatment medium comprising one or more high boiling organic liquids, and (c) heating the liquid post-treatment medium to a temperature of at least 90&#xb0; C. so as to convert the first coloured pigment material CPM1 to a second coloured pigment material CPM2.

Process for preparing an effect pigment

The present invention provides a process for imparting a simulated patina, or antique appearance to a substrate by using a coating composition comprising a perlite based effect pigment. The perlite based effect pigment functions as colorant and matting agent and shows an almost angle independent brightness. The process provides, for example, decorative wall coatings showing enhanced antique, or patina effects as compared to conventional effect pigments on basis of mica.

Use of perlite based effect pigments for finishes with antique, or patina appearance

Described are thin plane-parallel aluminum flakes illustrated in FIG.having a thickness of up to 200 nm and comprising an inner layer of oxidized aluminium having a thickness of 0.5-30 nm, a process for the manufacture thereof and the use thereof, e.g. in formulations, like paints, electrostatic coatings, printing inks, plastics materials, and cosmetics. Surprisingly, due to the inner layer of oxidized aluminum the aluminum flakes have an improved shear stability as evidenced e.g. by the difference in lightness before and after shear stress.

Thin aluminum flakes

Solid pigment preparations comprising as essential constituents

Solid pigment preparations containing water-soluble surface-active polyurethane-base additives

The present invention relates to pigments with improved and adjustable sparkling effect comprising A) a plate-like substrate of perlite coated with (a) dielectric material, and/or metal; and B) a plate-like substrate of mica, coated with (a) dielectric material, and/or a metal; and a process for their production and their use in paints, ink jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass. The pigments show an improved sparkle effect; in particular an attractive high sparkle intensity.

Pigments with improved sparkling effect

Luster pigments having pronounced sparkle which are based on aluminum platelets which have been coated with iron oxide and have in the precoated state an average platelet size from 8 to 30 &#x3bc;m, an average platelet thickness from 300 to 600 nm and an aspect ratio from 15 to 70.

Luster pigments having a pronounced glittering effect

Goniochromatic luster pigments comprising at least one dielectric low-refractive interference-colored layer which includes a polar organic solvent which can interact with the layer material via functional groups.

Goniochromatic bright pigments

Goniochromatic luster pigments which are based on titanium dioxide-coated siliceous platelets heated in a reductive atmosphere

Gloss pigments comprising an absorbent low-refractive coating

Multilayer cholesteric pigments

Goniochromatic luster pigments based on multiply coated iron oxide platelets

Growing community of inventors

Neustadt, Germany

Raimund Schmid