Characteristics and deposition behavior of epoxy–amine adducts in cathodic electrodeposition as a function of the degree of neutralization

The characteristics and behavior of adducts prepared by the reaction of an epoxy resin with a di-functional amine in a cathodic electrodeposition process as a function of the degree of neutralization (DN) has been studied. The study revealed that the DN has a pronounced effect on the film formation behavior of the above-mentioned adduct. The observed behavior has been explained in terms of the effect of DN on the characteristic time of the electrocoagulation phenomena as well as the characteristic time of the hydrogen gas evolution in the vicinity of the cathode.