Novel base stock lubricant blends

• US 20070289897A1
• Filed: 06/04/2007
• Published: 12/20/2007
• Est. Priority Date: 06/06/2006
• Status: Abandoned Application

• Current Assignee: Angela Galiano-Roth, James Carey, Thomas Dietz
• Original Assignee: Angela Galiano-Roth, James Carey, Thomas Dietz
• Inventors: Carey, James, Galiano-Roth, Angela, Dietz, Thomas
• Application Number:
  US11/810,021
• Publication Number:
  US 20070289897A1
• Time in Patent Office: Days
• US Class Current: 208/19
• CPC Class Codes: C10M 111/00 Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
• CPC Class Codes: C10M 111/04 at least one of them being a macromolecular organic compound
• CPC Class Codes: C10M 2203/065 used as base material
• CPC Class Codes: C10M 2203/1025 used as base material
• CPC Class Codes: C10M 2203/1085 used as base material
• CPC Class Codes: C10M 2205/0265 used as base material
• CPC Class Codes: C10M 2205/0285 used as base material
• CPC Class Codes: C10M 2205/143 used as base material
• CPC Class Codes: C10M 2205/163 used as base material
• CPC Class Codes: C10M 2205/173 used as base material
• CPC Class Codes: C10M 2205/223 used as base material
• CPC Class Codes: C10M 2207/2805 used as base material
• CPC Class Codes: C10M 2207/2825 used as base material
• CPC Class Codes: C10N 2020/01 Physico-chemical properties
• CPC Class Codes: C10N 2020/011 Cloud point
• CPC Class Codes: C10N 2020/02 Viscosity; Viscosity index
• CPC Class Codes: C10N 2030/02 Pour-point; Viscosity index
• CPC Class Codes: C10N 2030/08 Resistance to extreme temperature
• CPC Class Codes: C10N 2030/18 Anti-foaming property
• CPC Class Codes: C10N 2040/04 Oil-bath; Gear-boxes; Automatic transmissions; Traction drives
• CPC Class Codes: C10N 2040/08 : Hydraulic fluids, e.g. brake-fluids
• CPC Class Codes: C10N 2040/25 : Internal-combustion engines

Abstract

A method of improving air release is disclosed. The method comprises obtaining a lubricant comprising two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100° C. The second base stock comprises a viscosity less than 10 cSt, Kv100° C. In addition, a lubricant formulation and method of blending a lubricant formulation is also disclosed. The lubricant formulation comprises at least two base stocks. At least 5 percent and no more than 90 percent of a first base stock comprising oil with a viscosity greater than 300 cSt, Kv100° C. At least 5 percent and no more than 90 percent of a second base stock comprising oil with a viscosity less than 10 cSt, Kv100° C.

Claims

1. A method of improving air release, comprising

a) obtaining a lubricating oil comprising at least two base stocks with the viscosity difference between the first and second base stocks is greater than 96 cSt, Kv100°

C. and the lubricating oil provides air release of less than 20 minutes time to 0.1% air in a ASTM D3427 test; and

b) lubricating with the lubricating oil.

2. The method of claim 1 wherein at least one base stock is a synthetic Poly Alpha Olefin with a viscosity less than 10 cSt and greater than 2 cSt, Kv100°

C. and the second base stock is a synthetic oil with a viscosity greater than 100 and less than 300 cSt, Kv100°

C.

3. The method of claim 1 wherein the high viscosity base stock is chosen from the group consisting of high viscosity index PAO 150 (150 cSt, Kv100°

C.), a synthetic lubricating oil with a viscosity greater than 100 cSt, Kv100°

C., a PAO with a viscosity greater than 100 cSt, Kv100°

C., and any combination thereof.

4. The method of claim 1 wherein the second low viscosity base stock is chosen from the group consisting of GTL lubricants, wax derived lubricants, Poly Alpha Olefin, Brightstocks, Brightstocks with PIB, group II base stocks, group III base stocks, and any combination thereof.

5. The method of claim 1 further comprising at least one additive, the additive chosen from the group consisting of antiwear, antioxidant, defoamant, demulsifier, detergent, dispersant, metal passivator, friction reducter, rust inhibitor, and any combination thereof

6. The method of claim 1 further comprising a third base stock.

7. The method of claim 6, wherein the third base stock is chosen from a group consisting of a PAO with a viscosity of at least 6 cSt, Kv100°

C. and no more than 100 cSt, Kv100°

C., ester base stock, alkylated aromatic and any combination thereof.

8. The method of claim 6 wherein the first base stock has a viscosity greater than 100 cSt, Kv100°

C., the second base stock has a viscosity of less than 6 cSt and the third base stock has a viscosity of at least 6 cSt and no more than 100 cSt, Kv100°

C.

9. The method of claim 1 further comprising at a third and fourth base stock, the third base stock comprising a PAO having a viscosity of at least 6 cSt and less than 100 cSt, Kv100°

C., the fourth base stock comprising an ester or alkylated aromatic base stock.

10. The method of claim 9 further comprising an additive chosen to obtain favorable lubricant properties for gear oil protection.

11. The method of claim 1 wherein the lubricating oil has a viscosity greater than 3.5 cSt Kv100°

C. and a viscosity index greater than 120.

12. A lubricating oil with favorable air release properties, comprising

a) at least two base stocks;

b) at least 5 percent and no more than 90 percent of a first base stock comprising a synthetic oil with a viscosity greater than 300 cSt, Kv100°

C.;

c) at least 5 percent and no more than 90 percent of a second base stock comprising a oil with a viscosity less than 10 cSt, Kv100°

C.;

d) a viscosity difference of the first and second base stocks of at least 290 cSt, Kv100°

C.;

e) wherein the lubricant composition has a viscosity of greater than 4 cSt, Kv100°

C. and a viscosity index of at least 130; and

f) wherein the lubricating oil provides air release of less than 20 minutes time to 0.1% air in a ASTM D3427 test.

13. The lubricating oil of claim 12 wherein the second base stock has a viscosity greater than 2 cSt, Kv100°

C.

14. The lubricating oil of claim 12 further comprising an alkylated aromatic and an additive package.

15. The lubricating oil of claim 12 wherein the second low viscosity base stock is chosen from the group consisting of GTL lubricants, wax derived lubricants, Poly Alpha Olefin, Brightstocks, Brightstocks with PIB, group II base stocks, group III base stocks, and any combination thereof.

16. The lubricating oil of claim 12 further comprising an additive, the additive chosen from the group consisting of antiwear, antioxidant, defoamant, demulsifier, metal passivator, friction reducter, rust inhibitor, and any combination thereof.

17. The lubricating oil of claim 12 wherein the lubricating oil has a viscosity greater than 38 cSt (Kv100°

C.) and a viscosity index greater than 165.

18. A method of blending a lubricating oil to achieve favorable air release, comprising

a) obtaining a first synthetic base stock lubricant the first base stock having a viscosity greater than 300 cSt, Kv100°

C.;

b) obtaining a second synthetic base stock lubricant, the second base stock lubricant has a viscosity less than 10 cSt, Kv100°

C.; and

c) mixing the first and second base stock lubricant to produce the lubricating oil wherein the lubricating oil to provide a viscosity greater than 4 cSt Kv100°

C., an air release of less than 20 minutes time to 0.1% air in a ASTM D3427 test and a viscosity index greater than 130.

19. The method of claim 18 further comprising obtaining a third base stock, the third base stock having a viscosity greater than 6 cSt, Kv100°

C. and less than 100 cSt, Kv100°

C. and mixing the third base stock lubricant with the first and second base stock lubricants to create the lubricating oil.

20. The method of claim 19 further comprising obtaining a fourth base stock comprising an alkylated aromatic and mixing the fourth base stock with the first, second and third base stocks to produce the lubricating oil.

21. The method of claim 19 further comprising adding additives to the lubricating oil to achieve favorable gear oil properties of the lubricant.

22. The lubricating oil of claim 19 wherein the high viscosity base stock is chosen from the group consisting of high viscosity index PAO 150 (150 cSt, Kv100°

C.), a synthetic lubricating oil with a viscosity greater than 100 cSt, Kv100°

C., a PAO with a viscosity greater than 100 cSt, Kv100°

C., and any combination thereof.

23. The lubricating oil of claim 19 wherein the second low viscosity base stock is chosen from the group consisting of GTL lubricants, wax derived lubricants, Poly Alpha Olefin, Brightstocks, Brightstocks with PIB, group II base stocks, group III base stocks, and any combination thereof.

24. The lubricating oil of claim 19 further comprising an additive, the additive chosen from the group consisting of antiwear, antioxidant, defoamant, demulsifier, detergent, dispersant, metal passivator, friction reducter, rust inhibitor, and any combination thereof.

25. The lubricating oil of claim 19 wherein the lubricating oil has a viscosity greater than 38 cSt (Kv100°

C.) and a viscosity index greater than 161.

26. A method of achieving favorable Scanning Brookfield viscosities comprising

a) obtaining a lubricating oil comprising at least two base stocks, at least 5 percent and no more than 90 percent of a first base stock comprising a synthetic oil with a viscosity greater than 100 cSt, Kv100°

C., at least 5 percent and no more than 90 percent of a second base stock comprising a oil with a viscosity less than 6 cSt, Kv100°

C., wherein the lubrication oil provides a Scanning Brookfield Viscosities of less than 6000 cP at −

5 degrees Celsius using a ASTM D5133 test, an air release of less than 20 minutes time to 0.1% air in a ASTM D3427 test and

b) lubricating with the lubricating oil.

27. A method of achieving favorable pour point comprising

a) obtaining a lubricating oil comprising at least two base stocks, at least 5 percent and no more than 90 percent of a first base stock comprising a synthetic oil with a viscosity greater than 100 cSt, Kv100°

C., at least 5 percent and no more than 90 percent of a second base stock comprising a oil with a viscosity less than 6 cSt, Kv100°

C., wherein the lubrication oil provides a Scanning Brookfield Viscosities of less than 6000 cP at −

5 degrees Celsius using a ASTM D5133 test, an air release of less than 20 minutes time to 0.1% air in a ASTM D3427 test and

b) lubricating with the lubricating oil.