Conclusions
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1.
The high degree of adsorptivity of a succinimide additive and the effects of zinc dithiophosphates and bisphenols on the surface activity of the succinimide have been established by measurements of interfacial tension (ring method) and electron work function (contact potential difference method).
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2.
The characterizations of surface activity of succinimide additive packages that were obtained by the two methods are in agreement that competition does exist in the formation of adsorption layers of a succinimidetype additive with a zinc dithiophosphate or bisphenol.
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3.
The synergism observed in determinations of the solubilizing ability of certain additive packages containing succinimide-type additives and a bisphenol is not related to the manifestation of surface activity of these additives.
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Literature cited
A. B. Vipper, S. É. Krein, and V. N. Bauman, Neftekhim.,8, No. 6 (1968).
A. A. Markov, G. I. Kichkin, and V. L. Lashkhi, Khim. i Tekhnol. Topliv i Masel, No. 10 (1970).
A. B. Vipper, A. A. Markov, V. L. Lashkhi, and V. N. Bauman, Neftekhim.,11, No. 3 (1971).
Additional information
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 11, pp. 45–47, November, 1971.
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Vipper, A.B., Bauman, V.N., Malysheva, T.G. et al. Surface activity of succinimide additive packages. Chem Technol Fuels Oils 7, 860–862 (1971). https://doi.org/10.1007/BF00717098
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DOI: https://doi.org/10.1007/BF00717098