Surface Coating Studies of Polyurethane Derived from [(Alkyd)-(Epoxy Resin Treated Caster Oil)] Isocyanate Terminated Caster Oil Mixture-II

Castor oil (C) was reacted with commercial epoxy resin (E) (diglycidylether of bisphenol-A, DGEBF) at various mole ratios. The resultant products were designated as CEs. Isocyanate terminated caster oil Polyurethane (ICOPU) was prepared by reaction of caster oil and various proportion of hexamethylene diisocyanate. A commercial alkyd resin was blended with various proportions of CEs and ICOPU. A unique solvent system, which shows a one – phase clear solution and a clear coat of binder system, was used. All the blends were applied on mild steel panels and characterized for drying time, adhesion, flexibility, hardness, impact resistance and chemical resistance properties.

Author(s): Dinesh. P. Patel a ,K. S. Nimavatb and K. B. Vyasc

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