Ethylene glycol dimethylacrylate (EGDMA) is a diester formed by condensation of two equivalents of methacrylic acid with ethylene glycol. It is a colorless viscous liquid. It is sometimes called ethylene dimethacrylate.
Polymerization
Containing a pair of reactive alkene groups, EGDMA is a crosslinking agent. Like other acrylates, it is susceptible free radical polymerization. When used with methyl methacrylate, it leads to gel point at relatively low concentrations because of the nearly equivalent reactivities of all the double bonds involved. As a monomer, It is used to prepare hydroxyapatite/poly methyl methacrylate composites. ==Preparation==