Carbon black for lacquers and pigments

US4221772A · kind A · utility

Assignee

• Deutsche Gold- und Silber-Scheideanstalt Vormals Roessler

Inventors

• Edith Eisenmenger · Offenbach, DE
• Gerhard Kuhner · Hanau, DE
• Lothar Rothbuhr · Hürth, DE
• Hans Schafer · Gelnhausen, DE

Key dates

• Filing date: Jan 4, 1978
• Grant date: Sep 9, 1980
• Expiry date: Jan 4, 1998

Classification

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

Abstract

There is prepared carbon black having the following properties: ______________________________________ Primary particle size nm 35-120 BET surface area m.sup.2 /g 10-50 Iodine adsorption mg/g 10-55 Volatile/content % 2-8 pH value 3-6 Acidity ml n/10 acid 2-16 per 100 grams of carbon black DBP number ml/100 grams 40-140 ______________________________________ The carbon black is useful in producing gray lacquers, multi-colored lacquers and in making low viscosity and storage stable preliminary pastes suitable for use in lacquers.