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Lube-Tech Demulsibility


The demulsibility of an oil describes its ability to separate from water after having formed an emulsion with it. In some applications such as hydraulic oils, good demulsibility is one of the requirements that the base oil must fulfil. For applications such as cooling lubricants or marine- sector lubricants, a moderate to slight demulsibility is required.


The demulsifying properties of a base oil depend primarily on the polar and apolar groups that are present as well as on their division. Steric effects such as the shielding by space-consuming groups play a role too. Moreover, with the estolides the capping fatty acids used and the alcohol have a strong influence.


The results in Figure 10 reflect the fraction of the water-, oil- and emulsion phase in ml after thoroughly mixing 40 ml each of base oil and water. Similar to the saturated complex ester, the estolide still distinctly separates out water but forms hardly any free oil.


Paving new ways for sustainable lubrication.


ESTOLUB A new generation of first-


class Figure 10: Results of demulsibility Summary


The performance data show the outstanding results of the estolide, which unites the advantages of both the saturated and unsaturated complex esters in one product. Thus, estolides are able to effortlessly fulfil the diverse demands on base oils for lubricants and are particularly suitable for high performance applications. By virtue of their adaptable molecule they not only cover a broad spectrum of viscosity but


biolubricants with


outstanding performance characteristics based on patend pending estolide technology.


PUBLISHED BY LUBE: THE EUROPEAN LUBRICANTS INDUSTRY MAGAZINE


No.131 page 6


can also be varied widely in their product properties. The high stability, low friction coefficient and high resistance to wear make estolides the obvious choice for use in lubricating grease applications where resistance to hydrolysis and oxidation are indispensable.


Despite the already outstanding properties of the estolide, the focus of future work will be to improve parameters such as the demulsibility without affecting the otherwise very positive properties a lot. The molecular structure of the estolide offers sufficient scope to achieve this.


LINK www.peter-greven.de


Interested? Get in touch! www.peter-greven.de sales@peter-greven.com +49 2253 313-0


LUBE MAGAZINE NO.160 DECEMBER 2020


31


Samples available on request!


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