fusion processing procedure: charge all materials to reaction kettle and heat to 170 C (338 F) over a 2 h period. continue heating to 232 C (450 F) over an additional 4-5 h period. hold at 232 C (450 F) for an acid value of 20 and a cure of 60 s. fade temperature to 227 C (440 F) and hold for a 30 s cure. continue temperature fade to 205 C (400 F) and hold for a 25 s cure. cool to 188 C (370 F) and thin with toluene to 50% NVM. solvent reflux processing procedure: charge all materials to keelt equipped for reflux processing with a partial condenser, total condenser and split shell decanter- receiver. add butyl acetate (1-2% of charge weight) to kettle for reflux. heat over a 2 h period to 149 C (300 F). start solvent reflux back to kettle and dcontinue heating to 232 C (450 F) over a 4-5 h period. hold at 232 C (450 F) for an acid value of 15. cool to 216 C (420 F) with toluene addition and hold for acid value of 10 and cure of 20-25 s. put water on partial condenser, heat off and thin with remainin
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