Basf Lacke+farben Ag

Basf Aktiengesellschaft

Lacke & Farben Aktiengesellschaft

Guenter Etzrodt

Egon Liedek

Helmut Knittel

Robert Bayer

Reinhold Rieger

Hansulrich Reisacher

Achim Grefenstein

Roland Bauer

Harald Gaedcke

Wieland Jenet

A pigment formulation in granule form obtainable by a) dispersing at least two different pigments (A) in a solution of a thermoplastic polymer (B) in an organic solvent in the presence or absence of a dispersant (C), and b) applying as a layer the dispersion produced in step a) to granules of a thermoplastic polymer (B'), which is the same as the polymer (B), with removal of the solvent, wherein the pigment formulation includes the granules of the thermoplastic polymer (B&#x2032;); and a coating on the granules of the thermoplastic polymer (B&#x2032;), where the coating comprises the at least two different pigments (A) and the thermoplastic polymer (B).

Pigment preparations

Bismuth vanadate pigments

Inorganic oxide pigments (ceramics) are prepared by mixing the starting materials in the presence of water and in the presence or absence of assistants, drying and subsequent calcining in a rotary furnace by processing the starting materials in the presence of water into a pumpable suspension having particle sizes of 50%&lt;10 .mu.m and 100%&lt;50 .mu.m, dewatering the suspension by spray drying it to leave porous granules, and calcining those granules&gt;97% from 20 to 800 .mu.m in size.

Process for preparing inorganic pigments of particular particle size

Thermostable rutile mixed phase pigments of the ternary system titanium, antimony and chromium contain from 0.1 to 2.0% by weight of magnesium.

Thermostable rutile mixed phase pigments

Growing community of inventors

Stuttgart, Germany

Guenter Etzrodt