Dwayne Edwin Outlaw

US Patent:

61940704, Feb 27, 2001

Filed:

Apr 9, 1999

Appl. No.:

9/288903

Inventors:

Thomas J. Lynch - Macon GA
Gary M. Freeman - Macon GA
Christina D. Prowell - Warner Robins GA
Dwayne E. Outlaw - Danville GA

Assignee:

J. M. Huber Corporation - Edison NJ

International Classification:

B32B 500

US Classification:

428405

Abstract:

A method of preparing a surface treated barium sulfate product is disclosed which has improved dispersibility in end use applications such as polymeric formulations. The method includes mixing a silicon-hydride containing polysiloxane, in neat or in aqueous emulsion form, with a quantity of barium sulfate particles and then optionally drying the resultant mixture. The silicon-hydride containing polysiloxane is deposited on and chemically bonded to the surface of the barium sulfate particles.