POLY(NEOPENTYL POLYOL) ESTER BASED COOLANTS AND IMPROVED ADDITIVE PACKAGE

摘要

A synthetic lubricant composition is a blend of a polyol ester blend admixedwith effective amounts of an antioxidant, yellow metalpacifier and rust inhibitors. The polyol ester blend includes a majorproportion of poly(neopentyl polyol) ester blend formed by reactingpoly(pentaerythritol) partial esters with at least one C7 to C12 carboxylicacid mixed with an ester formed by reacting a polyol havingat least two hydroxyl groups and at least one C8-C10 carboxylic acid.Preferably, the acids are linear and avoid those which can causeodors during use. Effective additives include secondary arylamineantioxidants, triozole derivative yellow metal pacifier and an amino acidderivative and substituted primary and secondary amine and/or diamine rustinhibitor.