April Technical Dinner Meeting
Monday, April 8, 2019
Weber Grill in Schaumburg, IL
Registration at 5:30
Presentation at 6:00
Dinner to follow
Novel VOC-Free Polymeric Dispersants
By Tim Boebel of Stepan Company
Most decorative paints are tinted by a combination of specialized colorants that must provide consistent color development in different paint systems, remain unchanged during storage, and have minimum impact on film properties, all while being cost-effective and complying with regulatory requirements. This is not trivial since hard-to-disperse pigments are part of the package.
Stepan has developed patent-pending VOC-free chemistries which address many of these challenges. In this talk, we will introduce our first generation polymeric dispersants, which have specialized architectures and functionalities to effectively stabilize multiple organic pigments and carbon blacks in water. Because these molecules strongly interact with pigment surfaces, they provide easier milling at lower dose (vs. other chemistries). They properly perform their role without the use of auxiliary additives that can cause subsequent complications. Resulting dispersions are less complex, remain stable after storage and let-down, and do not interfere with paint rheology or film properties.
Tim Boebel is a Senior Research Chemist in the CASE Additives group at Stepan Company. He joined Stepan in 2015, after working in the Discovery group at Dow AgroSciences (now Corteva) for 7 years. He earned his Ph.D. in Organic Chemistry from The University of Illinois at Urbana-Champaign. His background is in small molecule synthesis, organometallic reaction development, and carbohydrate chemistry; his experience includes dispersion chemistry, SAR development, and mechanistic analysis.