Conclusions
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1.
A study has been made of surface activity for certain esters of phosphonic acids that have been recommended as antiwear (extreme-pressure) additives for lubricating oils.
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2.
Phosphonates or chlorophosphonates with low chemical activities relative to the metals that have been studied are not suitable for use as antiwear additives.
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3.
The effectiveness of antiwear action of these esters is determined not only by their chemical activity, but also by their surface properties.
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Additional information
Translated from Khimiya i Tekhnologiya Topliv i Masel, No. 2, pp. 47–50, February, 1975.
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Lashkhi, V.L., Vipper, A.B., Markov, A.A. et al. Antiwear effect of organophosphorus and organochlorophosphorus compounds in lubricating oils. Chem Technol Fuels Oils 11, 135–138 (1975). https://doi.org/10.1007/BF00717392
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DOI: https://doi.org/10.1007/BF00717392