Dynoadd F-101 is a polymeric, non-silicone flow and levelling agent. It reduces the surface tension in non-solvent and solvent based coating systems, thus improves substrate wetting. Surface defects like craters, cissing and pinholes are eliminated. Dynoadd F-101 is more polar than Dynoadd F-100. Dynoadd F-101 gives improved protection against surface defects in radcure formulations. The higher polarity contributes to good pigment wetting and improved adhesion in some systems.