PA/oil ratio -2 -1 0 1 2 A 0.1672 0.2466 0.3576 0.3954 0.3353 ΔE(KJ/mol) 5.811 4.7564 3.4728 3.6449 3.7313

Table 2: Activation energies and frequency factors for castor oil modified alkyd resin synthesis.