High hydroxyl content glycerol di-esters
AssigneeExxon Chemical Patents Inc.
InventorsMichael J. Keenan, Martin A. Krevalis, David W. Turner
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Abstract
A process for reproducibly forming a thermally and oxidatively stable high hydroxyl glycerol di-ester compound which is particularly useful as a lubricant. The glycerol di-ester compound is formed by reacting a glycidyl ester with an excess of a neo acid salt. The di-ester product is produced in a nearly quantitative conversion and is readily recoverable from the reaction mixture via a water wash, vacuum dry, and a mild wiped film evaporator treatment.
Claims22
A process for producing a glycerol di-ester composition comprising the steps of reacting a glycidyl ester having the formula:
- wherein R1, R2 and R3 are independently linear, branched or cyclic alkyls having from 1 to 22 carbon atoms, or linear, branched or cyclic alkenyl groups having 1 to 22 carbon atoms;
- with an excess of a neo acid salt, thereby forming said glycerol di-ester composition having a glycerol di-ester concentration of at least 80% and a hydroxyl number in the range between about 100 to 150.
A lubricant comprising:
- a glycerol di-ester composition formed by reacting a glycidyl ester haying the formula:
- wherein R1, R2 and R3 are independently linear, branched or cyclic alkyls having from 1 to 22 carbon atoms, or linear, branched or cyclic alkenyl groups having 1 to 22 carbon atoms;
- with an excess of a neo acid salt, thereby forming said glycerol di-ester composition having a glycerol di-ester concentration of at least 80% and a hydroxyl number in the range between about 100 to 150;
- and
- at least one additive.
Dependencies are inferred from the claim text.