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Studies in synthesis of polyesteramide resin from lower purity dimer acid and ethanolamine: Effect of ethanolamine content

Pravin G.Kadam, Shashank T.Mhaske


Polyesteramide (PEA) resin was synthesized using lower purity dimer acid (Pripol 1017, composition: 22%trimer acid, 75%dimer acid and 3%linoleic acid) and ethanolamine.Molar ratio of Pripol 1017: ethanolamine was varied as 1:1, 1:1.5 and 1:2. Prepared PEAswere characterized for acid value, amine value, hydroxyl value, Fourier transform infrared spectroscopy, gel permeation chromatography (number averagemolecularweight (Mn),weight average molecular weight (Mw) and polydispersity index (PDI)) and rheological (viscosity vs shear rate) properties. It was determined that amine value and hydroxyl values increased, whereas, acid value, Mn, Mw, PDI and viscosity decreased with increased molar concentration of ethanolamine in the PEA. This PEAs can be successfully used in applications like coatings, foams etc.


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