Compositions comprising estolide compounds and methods of making and using the same
Provided herein are compositions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R 1 , independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R 2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R 3 and R 4 , independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are uses of the compositions described herein.
1. A composition comprising:
at least one polybutene; and
at least one estolide compound.
2. The composition according to claim 1 , wherein the at least one polybutene comprises a polyisobutylene.
3. The composition according to claim 1 , wherein the at least one polybutene has an average molecular weight of about 400 to about 1300.
4. The composition according to claim 2 , wherein the polyisobutylene has an average molecular weight of about 400 to about 1300.
5. The composition according to claim 4 , wherein the polyisobutylene has an average molecular weight of about 950.
6. The composition according to claim 2 , wherein the at least one estolide compound is selected from compounds of Formula I:
wherein
x is, independently for each occurrence, an integer selected from 0 to 20;
y is, independently for each occurrence, an integer selected from 0 to 20;
n is an integer selected from 0 to 12;
R 1 is selected from hydrogen and an optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and
R 2 is an optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched;
wherein each fatty acid chain residue of said at least one compound is independently optionally substituted.
7. The composition according to claim 6 , wherein
x is, independently for each occurrence, an integer selected from 0 to 14;
y is, independently for each occurrence, an integer selected from 0 to 14;
n is an integer selected from 0 to 8;
R 1 is an optionally substituted C 1 to C 22 alkyl that is saturated or unsaturated, and branched or unbranched; and
R 2 is an optionally substituted C 1 to C 22 alkyl that is saturated or unsaturated, and branched or unbranched,
wherein each fatty acid chain residue is unsubstituted.
8. The composition according to claim 7 , wherein R 1 is unsubstituted and unbranched.
9. The composition according to claim 8 , wherein R 1 is saturated.
10. The composition according to claim 8 , wherein R 2 is unsubstituted, and branched or unbranched.
11. The composition according to claim 10 , wherein R 1 is saturated.
12. The composition according to claim 11 , wherein x is, independently for each occurrence, an integer selected from 7 and 8.
13. The composition according to claim 12 , wherein y is, independently for each occurrence, an integer selected from 7 and 8.
14. The composition according to claim 12 , wherein y is 0 for each occurrence.
15. A composition comprising:
at least one polyisobutylene; and
at least one estolide compound is selected from compounds of Formula I:
wherein
x is, independently for each occurrence, an integer selected from 0 to 14;
y is, independently for each occurrence, an integer selected from 0 to 14;
n is an integer selected from 0 to 8;
R 1 is an optionally substituted C 1 to C 22 alkyl that is saturated or unsaturated, and branched or unbranched; and
R 2 is an optionally substituted C 1 to C 22 alkyl that is saturated or unsaturated, and branched or unbranched,
wherein each fatty acid chain residue is unsubstituted.
16. The composition according to claim 15 , wherein the polyisobutylene has an average molecular weight of about 400 to about 1300.
17. The composition according to claim 16 , wherein the polyisobutylene has an average molecular weight of about 950.
18. The composition according to claim 15 , wherein R 1 is unsubstituted and unbranched.
19. The composition according to claim 18 , wherein R 1 is saturated.
20. The composition according to claim 15 , wherein R 2 is unsubstituted, and branched or unbranched.
21. The composition according to claim 20 , wherein R 1 is saturated.
22. The composition according to claim 21 , wherein x is, independently for each occurrence, an integer selected from 7 and 8.
23. The composition according to claim 22 , wherein y is, independently for each occurrence, an integer selected from 7 and 8.
24. The composition according to claim 22 , wherein y is 0 for each occurrence.
25. The composition according to claim 15 , further comprising at least one antioxidant.
26. The composition according to claim 25 , wherein the at least antioxidant is selected from one or more of an amine antioxidant, a phenolic antioxidant, or an organometallic antioxidant.
27. The composition according to claim 15 , further comprising at least one of a separation preventer, a stability enhancer, a surfactant, a biocide, a corrosion inhibitor, an abrasion inhibitor, a viscosity index improver, a pour point depressant, a dispersant, or an antifoaming agent.
28. The composition according to claim 15 , wherein the at least one estolide compounds comprises 25 to 95 wt. % of the composition.
29. The composition according to claim 28 , wherein the at least one polyisobutylene comprises 1 to 50 wt. % of the composition.