Two-cycle lubricants comprising estolide compounds

Patent metadata

Field	Value
Publication number	US-9365796-B2
Application number	US-201414491261-A
Country	US
Kind code	B2
Filing date	Sep 19, 2014
Priority date	Sep 25, 2013
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

Estolide compounds and compositions, including two-cycle lubricating compositions comprising at least one estolide compound. Exemplary two-cycle lubricating compositions comprise an estolide base oil and an additive package.

First claim

The invention claimed is:

1. A two-cycle lubricating composition comprising:
(i) about 40 to about 50% by weight of an estolide base oil having a kinematic viscosity of about 4 to about 10 cSt at 100° C., said estolide base oil comprising at least one estolide compound selected from compounds of Formula I:

wherein
x is, independently for each occurrence, an integer selected from 7 and 8;
y is, independently for each occurrence, an integer selected from 7 and 8;
n is an integer selected from 0, 1, and 2;
R 1 is an optionally substituted C 1 to C 22 alkyl that is saturated and unbranched; and
R 2 is an optionally substituted C 1 to C 22 alkyl that is saturated and branched,
wherein each fatty acid chain residue is unsubstituted;

(ii) about 3 to about 6% by weight of at least one detergent comprising an overbased calcium detergent;
(iii) about 23 to about 27% by weight of at least one viscosity modifier comprising a polybutene polymer;
(iv) about 23 to about 27% by weight of at least one solvent comprising a petroleum solvent or synthetic hydrocarbon solvent, and
(v) at least one antioxidant,
wherein said composition exhibits a JASO M 343 Exhaust Blocking Index of at least 90.

2. The two-cycle lubricating composition according to claim 1 , wherein the estolide base oil has a kinematic viscosity of 6.5 to 10 cSt at 100° C.

3. The two-cycle lubricating composition according to claim 1 , wherein the polybutene polymer comprises a poly-n-butenes and/or polyisobutylenes having a number average molecular weight of 300 to 1500.

4. The two-cycle lubricating composition according to claim 1 , wherein the at least one solvent comprises a petroleum solvent or synthetic hydrocarbon solvent, said at least one solvent having a boiling point not higher than 380° C. at atmospheric pressure.

5. The two-cycle lubricating composition according to claim 1 , wherein the at least one antioxidant comprises an aminic antioxidant.

6. The two-cycle lubricating composition according to claim 5 , wherein the aminic antioxidant comprises a diarylamine antioxidant.

7. The two-cycle lubricating composition according to claim 1 , wherein R 2 is selected from C 6 to C 12 alkyl.

8. The two-cycle lubricating composition according to claim 1 , wherein the estolide base oil exhibits an iodine value equal to or less than 15 cg/g.

9. The two-cycle lubricating composition according to claim 1 , wherein the estolide base oil exhibits an iodine value equal to or less than 10 cg/g.

10. The two-cycle lubricating composition according to claim 1 , wherein the estolide base oil has an EN that is an integer or fraction of an integer selected from 1 to 1.5.

11. The two-cycle lubricating composition according to claim 1 , wherein the estolide base oil has an EN less than or equal to 1.6.

12. The two-cycle lubricating composition according to claim 1 , wherein the detergent comprises an overbased calcium detergent having a total base number of 150 to 450.

13. The two-cycle lubricating composition according to claim 1 , wherein the at least one antioxidant is present in an amount of 1 to 2% by weight.

Assignees

• Biosynthetic Technologies Llc

Inventors

• Bredsguard Jakob

Classifications

• C10N2020/02

  Viscosity; Viscosity index · CPC title

• C10N2010/04

  Groups 2 or 12 · CPC title

• C10N2030/04

  Detergent property or dispersant property · CPC title

• C10N2040/26

  Two-strokes {or two-cycle engines} · CPC title

• C10M105/40 Primary

  containing free hydroxy or carboxyl groups · CPC title