Patent Number: 6,166,237

Title: Removal of dissolved silicates from alcohol-silicon direct synthesis solvents

Abstract: Dissolved silanes, silicones and silicates from solvents used in the slurry phase Direct Synthesis of alkoxysilanes are removed by adding a compatabilizing agent and water to generate filterable precipitates and reusable solvent. The solvents are thereby remediated and made suitable for reuse in Direct Synthesis processes. Foaming is reduced with the remediated solvent and silicon conversion rates are higher. The precipitates are easily filtered and retain negligible quantities of solvent.

Inventors: Simandan; Tiberiu Ladislau (Marietta, OH), Mendicino; Frank D. (Marietta, OH)

Assignee: Crompton Corporation

International Classification: B01D 19/02 (20060101); B01D 19/04 (20060101); C07F 7/00 (20060101); C07F 7/02 (20060101); C07F 007/18 (); C07F 007/04 ()

Expiration Date: 12/26/2017