Referring to a phase diagram for the Polystyrene/Acetone system such as is found in Prausnitz, et al., Molecular Thermodynamics of Fluid-Phase Equilibria, Second Edition, Prentice-hall, New Jersey, 1986, p. 570) hereby expressely incorporated by reference, it may be inferred that 110??? C. and 60 psig is a condition that is above the LCST (70???-80??? C.).