Synthetic esters are produced through the chemical reaction of an alcohol with a carboxylic acid. The potential combinations of alcohols and acids allow for a wide range of products with tailor made properties to be produced. Esters have several properties that make them a better selection than other oils: broader operating temperature ranges, lower pour point, high thermal-oxidative stability and good biodegradability. Synthetic esters provide high-performance lubrication in the fields of engine oils, transmission fluids, refrigeration lubricants, air compressors, chain lubricants, metalworking fluids greases, hydraulic fluids, and more. Esters can be combined with Polyalphaolefins (PAOs)+ in gear oils and engine oils to balance seal swell, solubilize additives, reduce volatility and improve energy efficiency.
The focus of this paper is to show how the unique polarity of the ester function allows for highly polar additives to be easily and completely solubilized in non-polar PAO based fluids.
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