Polychem 7331-M-50 Urethane OPC Polymers Polyurethane (PU) - Polyols Coatings >> Solventborne Architectural / Decorative Wood & Furniture Coatings mineral spirits, low aromatic POLYCHEM 7331-M-50 is an ASTM TYPE I oil modified polyurethane. It is a fast drying finish for paneling, flooring, furniture, aerosol and traffic marking paints. This product is HAP-free. Clear gloss and satin varnishes/ Floor Finishes/ Maintenance enamels linseed oil Air drying HAP-free, fast air drying, linseed oil modified urethane. Used in clear gloss and satin varnishes, floor finishes, maintenance enamels and paneling, flooring, furniture, aerosol and traffic marking paints.