Transition metal-containing hydrophobic silica

US5591797A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Herbert Barthel · Herzogenaurach, DE
• Frank Achenbach · Simbach, DE

Key dates

• Filing date: Oct 21, 1994
• Grant date: Jan 7, 1997
• Expiry date: Oct 21, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The transition metal-containing hydrophobic silica has a BET specific surface area of 40 to 450 m.sup.2 /g, a carbon content, obtained by the imparting of hydrophobic properties, of at least 0.5% by weight and a transition metal content of 10 to 10,000 ppm by weight. The hydrophobic silica is used as a heat stabilizer in addition-crosslinking 2-component silicone rubber materials.