OKLAHOMA CITY — Kerr-McGee Chemical LLC announced several appointments, including the promotion of Robert C. Gibney to vice president of Global Pigment Marketing. He was previously director of pigment sales and marketing for the Americas, and joined the company in 1991.

Greg E. Thomas, formerly manager of Material Procurement and Contract Management, has been promoted to vice president of Global Pigment Sales and Marketing, with responsibility for worldwide sales and marketing of titanium-dioxide pigment. Thomas joined Kerr-McGee in 1977.