Some motor oils contain such molecules, for example.
The star-shaped block copolymers allow higher solids concentrations and require less solvent than other polymers, flow easily and smoothly during processing, and result in a more elastic material. Now Virginia Tech chemists have discovered a way to make these complex molecules more easily and efficiently. The research will be presented at the American Chemical Society's 221st national meeting in San Diego. This is the first reported example of an efficient synthesis of thermoplastic elastomer containing this novel diene monomer. It will discuss both synthesis and monitoring processes.