Studies on particle size of waterborne emulsions derived from epoxy resin

The bisphenol type epoxy resin has been modified by p-aminobenzoic acid, th at leads to the formation of a product with both hydrophilic and lipophilic properties. The factors influencing the emulsion particle size of the modi fied resins were investigated, namely, neutralization value, solvent polari ty, dripping speed of water and initial solid content. The particle morphol ogy of the waterborne emulsion was also studied. Another aspect surveyed wa s the conductivity variation during the emulsification process. (C) 2001 El sevier Science Ltd. All rights reserved.