Patent ID: 8017660

Claim:
A process for making a liquid composition of ion-exchange polymer, at least about 50% of the total number of halogen and hydrogen atoms in said ion-exchange polymer being fluorine atoms, said process comprising: a) contacting the polymer in the solid state with aqueous tetrahydrofuran, said aqueous tetrahydrofuran being comprised of water and tetrahydrofuran in a ratio of about 10:90 to about 90:10 weight %, and b) heating said polymer in contact with aqueous tetrahydrofuran to a temperature of about 150° C. to about 300° C., in a vessel rated for the pressures encountered at these temperatures, to form the liquid composition, said liquid composition formed from said contacting and said heating containing less than about 3 weight % organic materials other than said tetrahydrofuran and those associated with said ion exchange polymer.