IIRC one of our resident expert ChemE here (Molakule?) stated We'd be seeing application of different esters in most all ILSAC GF5 lubes. I was surprised as you to see the blends "revealed' in the msds posted here recently by (?). Was that a translation of a Korean MSDS?
excerpt from XOM recent patent application++ for a LOW HTHS(2.9) improved fuel economy lubricant:
[0018] Esters comprise a useful base stock. Additive solvency and seal compatibility characteristics may be secured by the use of esters such as the esters of dibasic acids with monoalkanols and the polyol esters of monocarboxylic acids. Esters of the former type include, for example, the esters of dicarboxylic acids such as phthaiic acid, succinic acid, alkyi succinic acid, alkenyi succinic acid, maleic acid, azelaic acid, suberic acid, sebacic acid, fumaric acid, adipic acid, linoleic acid dimer, malonic acid, alkyl ma!onic acid, alkenyi ma!onic acid, etc., with a variety of alcohols such as butyl alcohol, hexyl alcohol, dodecyl alcohol, 2-ethylhexyl alcohol, etc. Specific examples of these types of esters include dibutyl adipate, di(2-ethylhexyl) sebacate, di-n-hexyl fumarate, dioctyl sebacate, diisooctyl azelate, diisodecyl azelate, dioctyl phthalate, didecyl phthalate, dieicosyl sebacate, etc.
[0Θ1 ] Particularly useful synthetic esters are those which are obtained by reacting one or more polyhydric alcohols, preferably the hindered polyols (such as the neopentyl polyols, e.g., neopentyi glycol, trimethylol ethane, 2-methyl- 2 -propyl- 1,3 -propanediol, trimethylol propane, pentaerythritol and dipenta- erythritol) with alkanoic acids containing at least about 4 carbon atoms, preferably € 5 to C 30 acids such as saturated straight chain fatty acids including caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, arachic acid, and behenic acid, or the corresponding branched chain fatty acids or unsaturated fatty acids such as oleic acid, or mixtures of any of these materials.
[0020] Suitable synthetic ester components include the esters of trimethylol propane, trimethylol butane, trimethylol ethane, pentaerythritol and/or di pentaerythritol with one or more monocarboxylic acids containing from about 5 to about 10 carbon atoms. These esters are widely available commercially, for example, the Mobil P-41 and P~51 esters of ExxonMobil Chemical Company).
++ Patent Application US2012/044305
