Synthesis and Characterization of Poly(urethane-ether azomethine) Fatty Amide Based Corrosion Resistant Coatings from Pongamia glabra Oil: An Eco-Friendly Approach

Table 1

Physicomechanical characterization of PUEAF coatings.

Resin code	PUEAF20	PUEAF25	PUEAF30
Gloss at 45°	88	90	97
Scratch hardness (kg)	1.9	2.5	2.3
Pencil hardness	1H	4H	3H
Bend test (1/8 inch)	Passes	Passes	Passes

Last numeral digit indicates the loading of TDI in PUEAF resins.