Polychem 7203-10-80 Silicone alkyd resin OPC Polymers Alkyd Resins 100 solvent POLYCHEM 7203-10-80 is a premium quality air dry siliconized alkyd supplied in 100 solvent at 80% solids. Transportation equipment enamel/ Exterior maintenance coating Air drying soya Premium quality, air drying, siliconized soya alkyd resin. Used in transportation equipment enamel and exterior maintenance coating