After a merger with the Emerald Kalama Chemical and CVC Thermoset Specialties groups, Emerald Performance Materials said its Polymer Additives and Nitriles group will be known as Antioxidants and Accelerators (AOA) and the company appointed Wendy Herbst as the section’s general manager.  According to Emerald, Herbst will be “focused on optimizing and expanding the business globally.” Herbst has 15 years of experience in strategic, marketing and development roles in the in...