Process for gelation of polymeric solution (C-1042)

Details Process for gelation of polymeric solution (C-1042) Process for gelation of polymeric solution (C-1042)

1980-04-03

1982-02-02

Michl, Paul R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08F 836

Patent

active

043138624

ABSTRACT:
The present invention relates to a process for forming a polymeric solution or gel having a viscosity of at least about 50,000 cps which includes the steps of dissolving an unneutralized or neutralized sulfonated polymer in a solvent to form a solution, a concentration of the unneutralized or neutralized sulfonated polymer in the solution being about 0.1 to about 20 wt. %, a viscosity of the solution being less than about 20,000 cps; and adding about 5 to about 500 vol. % water to the solution having a viscosity less than about 20,000 cps, the water being immiscible with the solvent and the solution, the viscosity of said solution increasing rapidly upon the addition of said water from less than 20,000 cps to greater than 50,000 cps.

REFERENCES:
patent: 2809959 (1957-10-01), Roth
patent: 2813087 (1957-11-01), Roth
patent: 3554287 (1971-01-01), Eilers
patent: 3870841 (1975-03-01), Makowski
patent: 4157432 (1979-06-01), Lundberg
patent: 4226751 (1980-10-01), Lundberg

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