LUBRICATING COMPOSITION

• US 20160024418A1
• Filed: 03/04/2014
• Published: 01/28/2016
• Est. Priority Date: 03/04/2013
• Status: Abandoned Application

• Current Assignee: Shell Oil Company (Shell Plc)
• Original Assignee: Shell Oil Company (Shell Plc)
• Inventors: DIXON, Richard Thomas, HUNT, Gillian Elizabeth
• Application Number:
  US14/772,082
• Publication Number:
  US 20160024418A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C10M 145/14 Acrylate; Methacrylate
• CPC Class Codes: C10M 169/04 Mixtures of base-materials and additives
• CPC Class Codes: C10M 171/004 Foam inhibited lubricant compositions
• CPC Class Codes: C10M 2205/173 used as base material
• CPC Class Codes: C10M 2209/084 Acrylate; Methacrylate
• CPC Class Codes: C10M 2229/02 Unspecified siloxanes; Silicones
• CPC Class Codes: C10N 2010/04 Groups 2 or 12
• CPC Class Codes: C10N 2020/02 Viscosity; Viscosity index
• CPC Class Codes: C10N 2030/02 Pour-point; Viscosity index
• CPC Class Codes: C10N 2030/18 Anti-foaming property
• CPC Class Codes: C10N 2030/74 Noack Volatility
• CPC Class Codes: C10N 2040/25 Internal-combustion engines

Abstract

The present invention provides a lubricating composition comprising: (i) a base oil; (ii) a non-silicone anti-foam agent; and (iii) one or more performance additives; wherein the composition has a kinematic viscosity at 100° C. (according to ASTM D445) of 16.3 mm²/s or less, a low temperature cranking viscosity of at most 6600 cP at −30° C. (ASTM D5293) and a NOACK volatility of at most 11% according to CEC-L-40-93.

Claims

1. A lubricating composition comprising:

(i) a base oil;

(ii) a non-silicone anti-foam agent; and

(iii) one or more performance additives;

wherein the composition has a kinematic viscosity at 100°

C. (according to ASTM D445) of 16.3 mm²/s or less, a low temperature cranking viscosity of at most 6600 cP at −

30°

C. (ASTM D5293) and a NOACK volatility of at most 11% according to CEC-L-40-93.

2. Lubricating composition according to claim 1, wherein the composition has a NOACK volatility of at most 10.5% according to CEC-L-40-93.

3. Lubricating composition according to claim 1, wherein the non-silicone anti-foam agent is selected from acrylate, polyacrylate, and polymethacrylate (PMA) polymers.

4. Lubricating composition according to claim 1, wherein the non-silicone anti-foam agent is present at a level of from 10 ppm to 500 pm, by weight of the composition.

5. Lubricating composition according to claim 1, wherein the base oil comprises one or more Fischer-Tropsch derived base oils.

6. Lubricating composition according to claim 5, wherein the base oil comprises 80% or greater of one or more Fischer-Tropsch derived base oils, by weight of the base oil.

7. Lubricating composition according to claim 1, wherein the composition is essentially free of polyalphaolefin base oil.

8. Lubricating composition according to claim 1, wherein the one or more performance additives comprises a silicone-based anti-foam agent.

9. (canceled)

10. (canceled)

11. A method of lubrication comprising applying a lubricating composition to a crankcase of an engine, wherein the lubricating composition comprises:

(i) a base oil;

(ii) a non-silicone anti-foam agent; and

(iii) one or more performance additives;

wherein the composition has a kinematic viscosity at 100°

C. (according to ASTM D445) of 16.3 mm²/s or less, a low temperature cranking viscosity of at most 6600 cP at −

30°

C. (ASTM D5293) and a NOACK volatility of at most 11% according to CEC-L-40-93.

12. The method according to claim 11, wherein the non-silicone anti-foam agent is an alkyl polyacrylate anti-foam agent.

13. The method according to claim 11, wherein the composition has a NOACK volatility of at most 10.5% according to CEC-L-40-93.

14. The method according to claim 11, wherein the non-silicone anti-foam agent is selected from acrylate, polyacrylate, and polymethacrylate (PMA) polymers.

15. The method according to claim 11, wherein the non-silicone anti-foam agent is present at a level of from 10 ppm to 500 pm, by weight of the composition.

16. The method according to claim 11, wherein the base oil comprises one or more Fischer-Tropsch derived base oils.

17. The method according to claim 11, wherein the base oil comprises 80% or greater of one or more Fischer-Tropsch derived base oils, by weight of the base oil.

18. The method according to claim 11, wherein the composition is essentially free of polyalphaolefin base oil.

19. The method according to claim 11, wherein the one or more performance additives comprises a silicone-based anti-foam agent.