Basf Se Corporation

Hans Ulrich Reisacher

Ralf Knischka

Uwe Mauthe

Thomas Frey

A process for producing a solid pigment preparation in the form of granules which comprises atomizing a suspension comprising (A0) 30% to 90% of a solvent component, (A1) 2% to 60% of a pigment component; (A2) 0% to 50% of a first filler component, and (A3) 10% to 70% of a surface-active additive component based on the sum of the components (A1) and (A2); contacting formed droplets with a gas stream having a predetermined temperature to dry the droplets to obtain granules having a predetermined residual moisture content, the droplets are exposed to an aerosol comprising a solid second filler component; and separating the granules from the gas stream.

Producing a solid pigment preparation in the form of granules by spray drying

The present invention relates to solid silica preparations composed of the components The invention further relates to methods of producing them and also to methods of coloring high molecular mass organic or inorganic materials, more particularly of coloring plastics.

Solid silica preparation

The present invention relates to a solid pigment preparation comprising, each percentage being based on the total weight of the preparation, (A) at least 60% by weight of a pigment component comprising one or more pigments and optionally a filler; (B) 1% by weight to 39% by weight of at least one nonionic water-soluble surface-active additive based on polyethers having an HLB value of greater than 10, (C) 1% by weight to 39% by weight of at least one nonionic surface-active additive based on polyethers having an HLB value of less than 10; (D) 0% by weight to 10% by weight of an additive component comprising at least one further additive, the sum total of the weight fractions not exceeding 100% by weight. The present invention further relates to processes for production thereof and to processes for coloring macromolecular materials.

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Maxdorf, Germany

Hans Ulrich Reisacher