Studies on particle size of waterborne emulsions derived from epoxy resin

The bisphenol type epoxy resin has been modified by p-aminobenzoic acid, that leads to the formation of a product with both hydrophilic and lipophilic properties. The factors influencing the emulsion particle size of the modified resins were investigated, namely, neutralization value, solvent polarity, dripping speed of water and initial solid content. The particle morphology of the waterborne emulsion was also studied. Another aspect surveyed was the conductivity variation during the emulsification process.