Pigment granulate, method for producing the same and use thereof

US8915998B2 · kind B2 · utility

Assignee

• Evonik Carbon Black GmbH · DE

Inventors

• Christian Gotz · Seligenstadt, DE
• Gerd Tauber · Seligenstadt, DE
• Ralph McIntosh · Hanau, DE
• Werner Kalbitz · Rodenbach, DE
• Frank Stenger · Alzenau, DE
• Rüdiger Mertsch · Wiesbaden, DE
• Mandy Mühlbach · Seligenstadt, DE

Key dates

• Filing date: Nov 19, 2009
• Grant date: Dec 23, 2014
• Expiry date: Apr 1, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/19
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a pigment granulate which contains 40 to 65% by weight of pigment and at least 10% by weight of a compound of general formula (I) CH3—(CH2)n—CH2—O—[(CH2)p—O]m—H, wherein n=8-18, p=1-4 and m=35-100, the weight ratio of the compound of general formula I to the pigment being ≧ the STSA surface area of the pigment in m2/g multiplied by 0.0021 g/m2 and the mass-weighted particle size of the pigment granulate being <20 μm. The pigment granulate can be produced by dispersing the pigment and the compound of formula I in a solvent and then drying the dispersion obtained. The pigments according to the invention can be used for dying and/or the antistatic finishing in water-based paints and lacquer systems, dispersion on paints, printing inks, ink systems and coating systems.