Thermoplastic Polyamide Resins are used as binder in printing inks, hot melts and adhesives. The polyamide resins are produced by a poly-condensation reaction. Reactants are an Ethyleneamine and a di-or polybasic fatty acid.
By varying the amine composition or the dibasic acid a many types of polyamides can be generated which show significant differences in performance. Thus EDA can be partly replaced by for example DETA or by PIP to obtain a better adhesion to plastic substrates such as flexibilized PVC.