1962 Volume 35 Issue 7 Pages 1175-1179
To study the effects on the viscosities of O/W emulsions of the addition of several materials to the oil phase, oil mixtures were emulsified and the viscosities of the emulsions so obtained were measured with a rotating-cup viscometer,
The effects of these additives in increasing emulsion viscosity are in the following order, with respect both to the amounts required to give a specified increase in viscosity and to the minimum amount required for a sudden increase in viscosity:
C-Alc, AGMS-IV>S-Ac, AGMS-III>La-Alc>AGMS-I, L-Ac, L-Alc>B-W>AGMO-II,AGMO-I, C-W, La
It was confirmed that in order to be effective as an additive in increasing emulsion viscosity, the iodine value should be small, while an ineffective additive always shows a low Δ as well as a low hydroxyl value. The melting point of an additive has, on the whole, no correlation with the power of increasing the emulsion viscosity. The acid value also shows no correlation with the viscosity of the emulsion formed.
A sudden increase in emulsion viscosity was observed beyond a certain amount characteristic of each additive.
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