Method for producing hydrophobic, heat-insulating mouldings

US9233986B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Guenter Kratel · Durach, DE
• Gerd Borchert · Durach, DE
• Frank Menzel · Oakland, US

Key dates

• Filing date: Jul 27, 2011
• Grant date: Jan 12, 2016
• Expiry date: Jul 27, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/4998
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Process for hydrophobizing a microporous thermal insulation molding comprising hydrophilic silica, in which the molding is treated with at least one organosilane and in which one or more organosilanes which are gaseous under the reaction conditions are introduced into a chamber containing the microporous thermal insulation molding comprising hydrophilic silica until the pressure difference Δp is ≧20 mbar.