The SUMI-EPOXY ELM-434 Series comprises four-functional amine epoxy resins, namely, tetraglycidyl diaminodiphenylmethane (TGDDM) epoxy they have been successfully used for CFRPs for primary aircraft structures resins.
They are mainly used for CFRPs, heat-resistant paints, heat-resistant adhesives. As an example, this series comes in three grades, ELM-434, ELM-434L and ELM-434VL, which have different viscosity.