Natural oxidic or silicate filler modified on the surface, a process for its production

US4514231A · kind A · utility

Assignee

• Degussa AG · DE

Inventors

• Dieter Kerner · Midland Park, US
• Peter Kleinschmit · Hanau, DE
• Alan Parkhouse · Wesseling, DE
• Siegfried Wolff · Bornheim, DE

Key dates

• Filing date: Apr 23, 1984
• Grant date: Apr 30, 1985
• Expiry date: Apr 23, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/84
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention is directed to the modification of natural oxidic or silicate fillers with water insoluble sulfur containing organosilicon compounds. For this purpose, the fillers are converted into an aqueous suspension and treated with the organosilicon compounds, in a given case in the presence of an emulsifier.