Admixing metal salt promotor, initiator and (m)ethyl acetoacetate to cure vinyl esters

摘要

A method of accelerating the curing of a vinyl ester resin (e. g., vinyl ester adhesives) and related compositions comprising: a vinyl ester resin (e.g., bisphenol/epichlorohydrin condensation polymer end capped with methacrylic or ethylacrylic acid); a vinyl monomer (e.g., styrene or the like); a free radical initiator (e.g., MEKP); a free radical promoter (e.g., polyvalent metal naphthenates, polyvalent metal octoates or the like); and an accelerator selected from the group consisting of methyl acetoacetate and ethyl acetoacetate, such compositions are characterized by gel times under ten minutes and physical properties approaching fully cured values within one hour.