Polychem 2279-B-50 Alkyd resin OPC Polymers Alkyd Resins >> Medium-oil Coatings >> Solventborne i-butanol and VM&P POLYCHEM 2279-B-50 is a medium oil alkyd formulated to give excellent pigment wetting properties. It will take a longer "drink" of solvent in paint formulations than conventional medium length alkyds. This product is low-HAP and can be formulated into HAP-free coatings (below 1% HAP). General utility enamels/ Implement enamels soya Air drying Low-HAP, air drying, pure medium oil soya alkyd resin. Used in HAP-free coatings such as general utility and implement enamels. Offers very good pigment wetting properties and long "drink" of solvent.