Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2011 Vol: 3 Issue: 1

Surface Coating Studies of [(Alkyd) â?? (Epoxy Resin Treated Castor Oil)]: [Maleated/Tetrahydrophthalated Cyclohexanone-Formaldehyde Resin[-[Epoxy Resin] condensate

Abstract

Castor oil (C) was reacted with commercial epoxy resin (E) (diglycidylether of bisphenol-A, DGEBA) at various mole ratios. The resultant products were designated as CEs. Unsaturated polyester resins were prepared by reacting DGEBA with maleated / tetrahydrophthalated cyclohexanone formaldehyde resins based on cyclohexanone formaldehyde (CHF) resins and designated as (Ma,bUPE and Pa,b UPE) respectively. A commercial alkyd resin was blended with various proportions of CEs and Ma,bUPE and Pa,bUPE. 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.

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