Clariant Masterbatches: Bob Burdette has been named product manager, additive masterbatches, responsible for managing technical sales and marketing for Cesa and Hydrocerol product lines. His regions include Ohio, In-diana, Illinois, Michigan, Wisconsin and Kentucky. He previously served as product manager for Zeon Chemicals. Dennis Haff was appointed new business development manager, responsible for new product development of special value-additive projects and Mid-west sales support. He previously served with Holland Color America.