W.R. GRACE & CO.

Grace is a premier specialty chemicals company and manufacturer of LUDOX® Colloidal Silica binders for Precision Investment Casting. LUDOX® Colloidal Silica has high bonding powder with a variety of refractory grains such as zircon, fused silica, alumina and alumino silicates. Refractory grains readily disperse in LUDOX® Colloidal Silica to form slurries that have consistent properties and long pot life. LUDOX® HS and LUDOX® SM Colloidal Silicas are frequently used with alkaline grades. The acidic LUDOX® SK Colloidal Silica Binders result in superior pot life and shell properties in many systems, especially for zircon slurries.