Synthesis and characterization of novel silicone acrylate–soya alkyd resin as binder for long life exterior coatings

A polymeric binder on soya alkyd, silicone intermediate and 2-hydroxyethyl metacrylate has been synthesized for formulation of long life exterior coating. Initially silicone acrylate monomer (SAM) was prepared by reacting hydroxyl-terminated silicone and 2-hydroxyl ethyl methacrylate (HEMA) and characterized by Fourier transformer infrared spectroscopy (FTIR) and carbon nuclear magnetic resonance spectroscopy (13C NMR). SAM was used in varying concentrations to synthesize novel soya alkyd resin. The unpigmented polymer film obtained from silicone acrylate–soya alkyd resin exhibits excellent mechanical properties and good exterior durability compared to silicone modified alkyd resin.