US2016024421A1PendingUtilityA1
Ionic liquids containing quaternary phosphonium cations and carboxylate anions, and their use as lubricant additives
Est. expiryJul 28, 2034(~8 yrs left)· nominal 20-yr term from priority
C10N 2030/06C10N 2030/12C10M 2205/0285C10M 2223/06C10M 171/00C10M 137/12C10M 169/04
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Claims
Abstract
The invention provides an ionic liquid composition having the following generic structural formula (1): wherein R 1 , R 2 , R 3 , and R 4 are each independently a hydrocarbon group containing at least 4 carbon atoms, and R 5 is a branched hydrocarbon group containing 4 to 8 carbon atoms atoms. The invention also provides a lubricant composition containing an ionic liquid dissolved in a base oil.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . An ionic liquid composition having the following generic structural formula:
wherein R 1 , R 2 , R 3 , and R 4 are each independently a hydrocarbon group containing at least 4 carbon atoms, and R 5 is a branched hydrocarbon group containing 4 to 8 carbon atoms atoms.
2 . The ionic liquid of claim 1 , wherein the ionic liquid is soluble (>0.1% wt.) or fully miscible (>10% wt.) in a non-polar hydrocarbon lubricating oil.
3 . The ionic liquid of claim 1 , wherein R 1 , R 2 , R 3 , and/or R 4 is a hexyl group.
4 . The ionic liquid of claim 1 , wherein R 1 , R 2 , R 3 , and/or R 4 is an octyl group.
5 . The ionic liquid of claim 1 , wherein the quaternary phosphonium is trihexyltetradecylphosphonium [P 66614 ].
6 . The ionic liquid of claim 1 , wherein the quaternary phosphonium is tetraoctylphosphonium [P 8888 ].
7 . The ionic liquid of claim 1 , wherein the quaternary phosphonium is tributyltetradecylphosphonium P[ 44414 ].
8 . The ionic liquid of claim 1 , wherein the quaternary phosphonium is tributyltetraoctylphosphonium [P 4448 ].
9 . The ionic liquid composition of claim 1 , wherein R 5 is a branched heptyl group.
10 . The ionic liquid of claim 1 , wherein the carboxylate is a 2-ethylhexanoate (C 7 H 15 COO).
11 . A lubricant composition comprising:
(i) an ionic liquid having the following generic structural formula:
wherein R 1 , R 2 , R 3 , and R 4 are each independently a hydrocarbon group containing at least 4 carbon atoms, and R 5 is a branched hydrocarbon group containing 4 to 8 carbon atoms; and
(ii) a base oil;
wherein said ionic liquid is dissolved in said base oil.
12 . The lubricant composition of claim 11 , wherein said base oil is a mechanical lubricating oil.
13 . The lubricant composition of claim 11 , wherein said ionic liquid is included in said base oil in an amount of at least 0.1 wt %.
14 . The lubricant composition of claim 11 , wherein said ionic liquid is included in said base oil in an amount of at least 1 wt %.
15 . The lubricant composition of claim 11 , wherein said ionic liquid is included in said base oil in an amount of at least 10 wt %.
16 . The lubricant composition of claim 11 , wherein said ionic liquid is included in said base oil in an amount of at least 50 wt %.
17 . The lubricant composition of claim 11 , wherein R 1 , R 2 , R 3 , and/or R 4 is a hexyl group.
18 . The lubricant composition of claim 11 wherein R 1 , R 2 , R 3 , and/or R 4 is an octyl group.
19 . The lubricant composition of claim 11 , wherein the quaternary phosphonium is trihexyltetradecylphosphonium [P 66614 ].
20 . The lubricant composition of claim 11 , wherein the quaternary phosphonium is tetraoctylphosphonium [P 8888 ].
21 . The lubricant composition of claim 11 , wherein the quaternary phosphonium is tributyltetradecylphosphonium [P 44414 ].
22 . The lubricant composition of claim 11 , wherein the quaternary phosphonium is tributyltetraoctylphosphonium [P 4448 ].
23 . The lubricant composition of claim 11 , wherein R 5 is a branched heptyl group.
24 . The ionic liquid of claim 11 , wherein the carboxylate is a 2-ethylhexanoate (C 7 H 15 COO).Cited by (0)
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