Emerald Specialties Group, a business group of Emerald Performance Materials, has formed a team focused on digital applications, expanding its commercial and R&D staff for Hilton Davis color and black dispersions to support growing demand in the key digital and inkjet segments.   The company appointed Willis Reese as business director and added Jim Brock and Xiaoming Wu to the growing R&D team as dispersions R&D chemist and senior digital technologies chemist, respectively.   As ...