Styrene Monomer is commonly used as a reactive diluent (solvent) in vinyl ester or unsaturated polyester resins and gel coats. Typically thinned 2-5% to make them thin enough to spray. Styrene Monomer The curing reaction that transforms a liquid mixture of resin, glass, fillers and other materials into a solid, durable composite product involves the crosslinking of vinyl ester and unsaturated polyester molecules by styrene Methyl ethyl ketone peroxide also known as MEKP, catalyst or hardener, is a chemical that is added to polyester and vinyl resins to initiate a cured product. When MEKP is mixed with the resin, the resulting chemical reaction causes heat to build up and cure or harden the polyester resin. MEKP is required with all polyester resins, gel coats and vinyl ester resin.
