THE WOODLANDS, Texas — Chevron Phillips Chemical Co. LLC recently appointed Don Lycette to the position of senior vice president, research and technology, replacing Dennis Holtermann who has elected to retire after 33 years of distinguished service with Chevron Phillips Chemical and Chevron Corp. Lycette was previously vice president, environment, health, safety and security, a position he assumed in 2011. For more information, visit www.cpchem.com or call (832) 813-4100.