Dispersion, slurry and process for producing a casting mould for precision casting using the slurry

US8778449B2 · kind B2 · utility

Assignees

• EVONIK DEGUSSA GMBH · DE
• CENTER FOR ABRASIVES AND REFRACTORIES RESEARCH & DEVELOPMENT C.A.R.R.D. GMBH · AT

Inventors

• Christoph Tontrup · Alzenau, DE
• Wolfgang Lortz · Wächtersbach, DE
• Gabriele Perlet · Großkrotzenburg, DE
• Erich Schmidt-Kluge · Villach, AT
• Danilo Frulli · Enghien-les-Bains, FR

Key dates

• Filing date: Mar 30, 2010
• Grant date: Jul 15, 2014
• Expiry date: Apr 21, 2031

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K3/22
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Slurry which contains a) from (50) to (80)% by weight of refractory particles having an average particle size of from (0.5) m to (150) m, b) from (5) to (35)% by weight of aluminum oxide particles having an average particle diameter of less than (300) nm and c) from (5) to (35)% by weight of water and d) a pH of from (5) to (12). Process for producing the slurry using a dispersion, and also the dispersion itself. Process for producing a casting mold, and also the casting mold itself.