Patent attributes
Compositions for controlling anomalies in the film formed by wrinkle finish powder coating compositions are disclosed as are finished form powder coating compositions, methods and uses. Such compositions, methods and uses are particularly effective in controlling formation of starburst-type anomalies. Wrinkle finish powder coating compositions for use with the invention include epoxy, epoxy-polyester, urethane-polyester and TGIC-free polyester wrinkle resins together with other optional constituents such as wrinkle-forming agents, curatives and catalysts. A starburst control component for controlling formation of starburst-type anomalies in the cured powder coating material comprises a polyester resin binder, a curative, a flow aid and a degassing agent.
