COR52 resins are low reactivity, low viscosity, unsaturated polyester resins specially designed for excellent adhesion to acrylic sheeting. They are used as a component of the glass-reinforced laminate backups for rigidizing acrylic sheeting in swimming pools spas, tubs, and shower stall units. COR52 resins have a low exotherm and fast wet-out of glass fibers and fillers.