UV Resistance: Ultraviolet (UV) radiation, from sunlight, accelerates the chemical and physical degradation of FRP moldings exposed to outdoor conditions. The degradation occurs mostly on the surface of the molding. But once degraded, the surface tends to chalk and erode due to weathering, exposing fresh surface to further attack. Protection of outdoor structures fabricated in FRP is, therefore, important. Kerox Pigments absorb and convert UV radiation into heat, which is dissipated to the surrounding medium readily. Therefore, pigments prolong the outdoor service life of composite moldings. Protection by this mechanism depends on the pigment concentration on the surface. Gel coats having higher pigment loading will, therefore, afford longer protection.

These are dispersions of inorganic and organic compounds in a special grade of unsaturated polyester resin vehicle, which cross links during curing with commercial grades of Gelcoat and GP resin systems.These are dispersions of inorganic and organic compounds in a special grade of saturated polyester resin vehicle, which functions as a plasticizer in commercial grades of Epoxy resin systems.