“…In the case of the polystyrene-cyclohexane system both cases have been found (see Table 4), depending on the molecular weight and pressure ranges, dT c /dP is negative or positive. 25,[31][32][33][34] Although some data are limited to low pressure only, p < 100 bar, 31 it is possible to estimate dT c /dP with rather good accuracy over a fairly broad range of molecular weights from 3.7 Â 10 4 to 1.56 Â 10 6 and pressure up to 500 bar. The low pressure data set reported by Saeki et al 31 has been treated in the following way.…”