Oil-based efficient poly(esteramide) coatings- a review

Poly(ester amide) (PEA) has been profoundly used in the coating industry owing to its chemical resistance, water vapor resistance, and excellent physio-mechanical properties. The core source of synthesizing PEA coatings is via the conversion of oils (edible and non-edible) to fatty amide followed by reactions with dicarboxylic acids. The resultant coatings show enhanced drying time, improved crystallization, and low water absorption due to integration with dual properties of both amide and ester groups. Furthermore, plain PEA based coatings are also modified with various nanofillers, reactants, and other metal composites to enhance their chemical and mechanical properties. The present paper provides a comprehensive review of the synthesis pathways of PEA coatings across a broad spectrum of applications. We have also elucidated the newly developed synthesis pathways for waterborne and biodegradable PEA-based coatings. In addition to describing novel UV-curing applications, the critical properties highlighted in various application areas include anti-corrosivity, chemical resistance, anti-microbial, and flame retardancy.