A = Percent of polyester by weight of polyester/melamine (low value = 50%, high value = 70%) B = Percent cellulose acetate butyrate carboxylate (low value = 15%, high value = 30%) C = Percent aluminum stearate (low value = 1%, high value = 3%) D= Percent acid catalyst (low value = 0.25%, high value = 0.50%) = The responses are (1) = 63.8, a = 77.6, b = 68.8, ab = 76.5, c = 72.5, ac = 77.2, bc = 77.7, abc= ad = 64.9, bd = 72.7, abd = bcd76.0, and abcd = 75.9. 77.7, abc 84.5, d = 60.6, 73.3, cd = 68.0, acd = 76.3,