Kronos International, Inc.

Kronos Titan-g.m.b.h.

Steag Power Minerals Gmbh

Jürgen Bender

Volker Schmitt

Siegfried Blümel

Christian Scheidt

Werner Krohm

Brigitte Vielhaber-Kirsch

A construction material mixture used as a concrete additive contains a puzzolanic substrate and a photocatalyst. The puzzolanic substrate and the photocatalyst are available in the form of a dry mixture. The construction material mixture is a cement free dry mixture, wherein the photocatalyst has a primary particle size of between 2 nm and 100 nm. The puzzolanic substrate consists of at least 90 weight % of fly ash with a grain size of between 0.1 &#x3bc;m and 1 mm. The substrate and the photocatalyst are available completely mixed so that the photocatalyst is at least partially distributed on the surface of the substrate.

Construction material mixture, a method for producing same, and use thereof

The invention relates to a titanium dioxide pigment mixture comprising a pigment having high greying stability (pigment type A) and a pigment having increased SiOand AlOcontent in flaky precipitation (pigment type B). Said mixture provides, for example in paper, a high level of opacity for sufficient greying stability. If necessary, the light-fastness of the paper can be further increased by means of known production-conditioned measures on pigment type B.

Titanium dioxide pigment composition

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Monheim, Germany

Jürgen Bender