TACK-FREE LOW VOC VINYLESTER RESIN

摘要

Low VOC vinyl ester resins exhibit improved cure in an oxygen containing environment. The vinyl ester resins comprise the reaction product of a composition comprising an epoxy resin having at least two epoxy groups per molecule; a polybasic anhydride; unsaturated monobasic acids comprising up t o about 10 molar percent dicyclopentadienyl monomaleate based on the total unsaturated monobasic acids, and more preferably the vinyl ester resin has a viscosity of less than about 1200 mPa.s (cp) measured at a shear of 500 s-1 in styrene at 70% non-volatile matter. Barrier coats and gel coats comprising such vinyl ester resins have acceptable tackiness and physical characteristics. A process to make such vinyl ester resins is also described .