Sartomer Company named Todd Speece business development manager, rubber, and Kathleen Shelton marketing manager, metallic monomers. Both Mr. Speece and Ms. Shelton will be based in Sartomer’s Exton, PA headquarters.       Mr. Speece is responsible for developing new applications and business opportunities in the rubber industry. He reports to Bill Wittig, business director. Mr. Speece previously served as strategic rubber accounts manager for Sartomer, responsible for the sales and marketing a...