Branched diesters for use as a base stock and in lubricant applications
This application relates to branched diester compositions that can be used as a base stock for lubricant applications, or as a base stock blend component for use in a finished lubricant or for particular applications, and methods for making the same.
1. A method of making a diester lubricant base stock compound, comprising:
reacting methyl 9-decenoate with an alcohol of formula R—OH, wherein R is a C 1 -C 36 alkyl group, to form a monoester, wherein the monoester is a compound of formula
and
reacting the monoester with an acid of formula R 1 —COOH, wherein R 1 is a C 1 -C 36 alkyl group, to form a diester lubricant base stock compound of formula
2. The method of claim 1 , wherein R is 2-ethylhexyl, isobutyl, n-hexyl, or n-octyl.
3. The method of claim 1 , wherein R 1 is n-heptyl, n-nonyl, or n-undecyl.
4. The method of claim 2 , wherein R 1 is n-heptyl, n-nonyl, or n-undecyl.
5. A method of making a diester lubricant base stock compound, comprising:
reacting methyl 9-decenoate with an alcohol of formula R—OH, wherein R is a C 1 -C 36 alkyl group, to form a first monoester, wherein the monoester is a compound of formula
reacting the first monoester with formic acid, followed by hydrolysis, to form a second monoester, wherein the second monoester is a compound of formula
and
reacting the second monoester with an acid of formula R 1 —COOH, wherein R 1 is a C 1 -C 36 alkyl group, to form a diester lubricant base stock compound of formula
6. The method of claim 5 , wherein R is 2-ethylhexyl, isobutyl, n-hexyl, or n-octyl.
7. The method of claim 5 , wherein R 1 is n-heptyl, n-nonyl, or n-undecyl.
8. The method of claim 6 , wherein R 1 is n-heptyl, n-nonyl, or n-undecyl.