Silica and silicate by precipitation at constant alkali number, and its use

US7097818B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Gottlieb-Georg Lindner · Wesseling, DE
• Robert Kuhlmann · Lechenich, DE
• Claus-Peter Drexel · Neu-Isenburg, DE

Key dates

• Filing date: Jan 31, 2005
• Grant date: Aug 29, 2006
• Expiry date: Feb 26, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/90
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Precipitated silica or silicates, obtainable by acid precipitation of aqueous silicate solutions while maintaining a constant alkali number of at least 1.