Abstract
The interaction of a commercial sample of dimethyl ditallow ammonium chloride (Adogen® 470E) and sodium alkylbenzene sulfonate (C-550 LAS) in aqueous solution was examined. Interaction was very strong, with the ion pair association constant estimated to be 1 × 106 1/mol.
At laundry use level concentrations, the mixtures were turbid. The highest turbidity was found at equimolar concentrations of C-550 LAS and Adogen® 470E. Turbidity was assumed to be due to the formation of an insoluble 1:1 complex.
Both filtered and unfiltered mixtures of C-550 LAS and Adogen® 470E were evaluated for detergency, softening and antistat performance. As the mixtures approached 1:1 stoichiometry, detergency decreased and softening and antistat performance improved. Lower detergency was explained by the loss from solution of LAS to form a 1:1 LAS-dimethyl ditallow ammonium complex. Improved softening and antistat perfromance were explained by adsorption of the insoluble complex on the cloth.
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Presented May 10, 1988 at the 79th Annual AOCS Meeting, in Phoenix, Arizona.
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Smith, D.L., Cox, M.F., Russell, G.L. et al. The interaction of dimethyl ditallow ammonium chloride and sodium linear alkylbenzene sulfonate. J Am Oil Chem Soc 66, 718–727 (1989). https://doi.org/10.1007/BF02669960
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DOI: https://doi.org/10.1007/BF02669960