PHYSICAL CHEMISTRY OF RESIN SOLUTIONS. PART VIII. A DISCUSSION ON THE VISCOSITY OF RESINS, CELLULOSE DERIVATIVES, ETC IN MIXED SOLVENTS.

Viscosity date obtained for lyophilic solutes, e.g , resins. cellulose derivatives, etc. in mixed solvents have been examined from theoretical and experimental considerations. It has been shown that the results are qualitatively in agreement with the classical equa­tions on viscosity. The conditions for the occurrence and position of the minimum vis­cosity have been discussed and the results have been generalised in the shape of a rule, deductions from which have been shown to be in accord with the available data.