Luperox DDM-9 Methyl Ethyl Ketone Peroxide Solutions 1338-23-4 Arkema North America South and Central America Western Europe Central and Eastern Europe Middle East and Central Asia Crosslinking / Coupling / Curing Agents Polyester Vinyl Coatings Architectural / Decorative Automotive OEM General Industrial /Maintenance Insoluble in water Miscible in ethylacetate Luperox DDM-9 Phthalate free MEKP offers the greatest flexibility in terms of useful concentration range and pot-life thus finds use in a wide variety of ambient temperature cure applications. Used by most UPR (unsaturated polyester resin) producers for resin standardization because of its consistent lot-to-lot catalytic activity. Low residual hydrogen peroxide content makes Lupersol DDM-9 ideal for use in gel coats. Luperox Ketone Peroxides are used exclusively for the cure of promoted unsaturated polyester resins and vinyl ester resins at ambient temperatures. The function of the promoter, usually a transition metal salt such as cobalt naphthenate or octoate, is to activate decomposition of the peroxide or initiator. Ketone peroxides. Offers the greatest flexibility in terms of useful concentration range and pot-life. Used for the cure of promoted unsaturated polyester resins and vinyl ester resins.