Evaluating surfactants

Details Evaluating surfactants Evaluating surfactants

1977-10-31

1979-04-10

Queisser, Richard C.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Cleaning or foaming ability

73 38, G01N 1500

Patent

active

041482174

ABSTRACT:
A method for evaluating foam-producing surfactants by measuring the resistance to the flow of a gas, for example, nitrogen, through a standard sand pack containing a solution of the surfactant. The resistance is also measured when the sand pack contains water, thereby allowing the surfactant solution's resistance factor to be determined. The resistance factor for a surfactant solution is defined as the ratio of the maximum pressure drop observed across the sand pack when the pore space was filled with the surfactant foam to the maximum pressure drop when the sand pack was filled with water and was being displaced by a gas flow.

REFERENCES:
patent: 2498198 (1950-02-01), Beeson
patent: 2733595 (1956-02-01), Twining
patent: 3073149 (1963-01-01), Mongan

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