Lubricant Basestocks Synthetic

Synthetic Lubricant Basestocks from Monohydric Alcohols... 

Soybean oil (SBO) and high oleic (90%) sunflower oil (HOSO) were chosen for evaluation as examples of vegetable oils (62). Polyalphaolephin and adipate represented widely used synthetic biodegradable lubricating basestocks. The mineral oil was a typical non-biodegradable basestock mostly used for formulations of automotive lubricants. Except for natural antioxidants, the above fluids did not have any additives. 

Hwang, H.S. S.Z. Erhan. Synthetic lubricant basestocks from epoxidized soybean oil and Guerbet alcohols. Ind. Crop Prod. 2006,23, 311—317. 

The ideal diester for use in a partial synthetic lubricant, i.e. blend of diester, petroleum basestock and additives, should have the lowest viscosity at both high and low temperatures, and also be the least volatile. Of course, it would also need to be resistant to oxidation and corrosion and provide lubrication and wear protection when compounded into a finished lubricant. The low viscosity requirement of the synthetic portion of the partial synthetic lubricant is for economic reasons. The synthetic portion is substantially more expensive than the petroleum portion and the lower the amount required to achieve the low viscosity of the final oil, the better the final economics. As mentioned earlier, the low volatility is desirable to prevent carrying the... 

Diesters prepared from specific monohydric alcohols can be formulated into low viscosity partial synthetic automotive crankcase lubricants. These diester basestocks exhibit definite advantages over petroleum basestocks of similar and sometimes higher viscosities. These advantages are ... 

Industrial lubricants have a very diverse range of applications and overall they comprise the largest volume usage of lubricants. It is not possible to discuss all specific details associated with industrial lubricants in this chapter. As industrial lubricants based on mineral and synthetic basestocks are somewhat similar to motor oils, see Chapter 9, and are described elsewhere [6, 7], they will be discussed in general terms. Metalworking lubricants have also been described in a number of books [6-14]. The following current trends are predominant ... 

FIGURE 3.19 VI as a function of CMRP content for group II and in base stocks. Source V. J. Gatto M. A. Grina, T. L. Tat, H. T. Ryan. The Influence of Chemical Structure on the Physical and Performance Properties of Hydrocracked Basestocks and Polyalphole-fins, Journal of Synthetic Lubrication 19 13-18 (2002). With permission. 

Source T. T. Releford and K. J. Ball, Exxon s New Synthetic Basestocks—Exxsyn, Paper FL-93-117, presented at the National Fuels and Lubricants meeting, Houston, Texas, November 4-5, 1993. With permission. 

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