Method for improving rheological properties of an aqueous pigment slurry and a dispersion agent

The invention relates to a method for improving rheological properties of an aqueous pigment slurry. In the method dispersion agent is added to an aqueous phase of a slurry comprising pigment particles or to the aqueous phase into which the pigment particles are to be added. The dispersion agent com...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Huhtala Kimmo, Aarni Esko, Heiska Perttu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention relates to a method for improving rheological properties of an aqueous pigment slurry. In the method dispersion agent is added to an aqueous phase of a slurry comprising pigment particles or to the aqueous phase into which the pigment particles are to be added. The dispersion agent comprises styrene acrylate copolymer. The invention relates also to dispersion agent for a pigment slurry comprising a first component comprising styrene acrylate copolymer and a second component comprising a conventional dispersion agent, such as a straight-chain polyacrylate.