LUBRICANT COMPOSITION

• US 20100113313A1
• Filed: 03/24/2008
• Published: 05/06/2010
• Est. Priority Date: 03/28/2007
• Status: Abandoned Application

• Current Assignee: Idemitsu Kosan Company Limited
• Original Assignee: Idemitsu Kosan Company Limited
• Inventors: Teshima, Kazuhiro, Kamano, Hideki
• Application Number:
  US12/593,297
• Publication Number:
  US 20100113313A1
• Time in Patent Office: Days
• US Class Current: 508/192
• CPC Class Codes: C10M 163/00 Lubricating compositions characterised by the additive being a mixture of a compound of unknown or incompletely defined constitution and a non-macromolecular compound, each of these compounds being essential
• CPC Class Codes: C10M 2203/1006 used as base material
• CPC Class Codes: C10M 2205/02 containing acyclic monomers
• CPC Class Codes: C10M 2207/026 with tertiary alkyl groups
• CPC Class Codes: C10M 2207/028 Overbased salts thereof
• CPC Class Codes: C10M 2207/262 derived from hydroxy substituted aromatic acids, e.g. salicylates
• CPC Class Codes: C10M 2207/289 containing free hydroxy groups
• CPC Class Codes: C10M 2209/084 Acrylate; Methacrylate
• CPC Class Codes: C10M 2215/064 Di- and triaryl amines
• CPC Class Codes: C10M 2215/223 Five-membered rings containing nitrogen and carbon only
• CPC Class Codes: C10M 2215/28 Amides; Imides
• CPC Class Codes: C10M 2215/30 Heterocyclic compounds
• CPC Class Codes: C10M 2219/046 Overbasedsulfonic acid salts
• CPC Class Codes: C10N 2010/04 Groups 2 or 12
• CPC Class Codes: C10N 2020/02 Viscosity; Viscosity index
• CPC Class Codes: C10N 2020/04 Molecular weight; Molecular weight distribution
• CPC Class Codes: C10N 2030/04 Detergent property or dispersant property
• CPC Class Codes: C10N 2030/06 Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
• CPC Class Codes: C10N 2030/42 Phosphor free or low phosphor content compositions
• CPC Class Codes: C10N 2030/43 Sulfur free or low sulfur content compositions
• CPC Class Codes: C10N 2030/45 : Ash-less or low ash content
• CPC Class Codes: C10N 2030/52 : Base number [TBN]
• CPC Class Codes: C10N 2030/64 : Environmental friendly compositions
• CPC Class Codes: C10N 2030/74 : Noack Volatility
• CPC Class Codes: C10N 2030/78 : Fuel contamination
• CPC Class Codes: C10N 2040/25 : Internal-combustion engines
• CPC Class Codes: C10N 2040/252 : Diesel engines
• CPC Class Codes: C10N 2040/253 : Small diesel engines
• CPC Class Codes: C10N 2060/14 : by boron or a compound containing boron

Abstract

A lubricating oil composition used in an internal combustion engine is provided. The internal combusting engine uses a fuel that contains at least one fat and oil selected from a group consisting of natural fat and oil, hydrotreated natural fat and oil, transesterified natural fat, and oil and hydrotreated transesterified natural fat and oil. The lubricating oil composition includes: base oil of lubricating oil; a component (A) containing a boron derivative of an alkyl or alkenyl-substituted succinimide compound having a number average molecular weight of 200 to 5000; and a component (B) containing an alkaline earth metal-based detergent. The component (A) is contained by 0.01 to 0.2 mass % in terms of boron of a total amount of the composition while the component (B) is contained by 0.35 mass % or less in terms of the alkaline earth metal of the total amount of the composition.

Claims

1. A lubricating oil composition for an internal combustion engine, the internal combustion engine using a fuel that comprises at least one fat and oil selected from a group consisting of natural fat and oil, hydrotreated natural fat and oil, transesterified natural fat and oil and hydrotreated transesterified natural fat and oil, wherein the lubricating oil composition comprises:

a base oil of lubricating oil;

a component (A) comprising a boron derivative of a succinimide compound substituted by an alkyl or alkenyl group having a number average molecular weight of 200 to 5000; and

a component (B) comprising an alkaline earth metal-based detergent, and wherein the lubricating oil composition comprises the component (A) of 0.01 to 0.2 mass % in terms of boron of a total amount of the composition and the component (B) of 0.35 mass % or less in terms of the alkaline earth metal of the total amount of the composition.

2. The lubricant oil composition according to claim 1, wherein a mass ratio (B/N) of boron (B) and nitrogen (N) in the component (A) is 0.5 or more.

3. The lubricant oil composition according to claim 1, wherein the lubricating oil composition comprises at least one of a phenol-based antioxidant and an amine-based antioxidant in an amount of 0.3 mass % or more of the total amount of the composition.

4. The lubricant oil composition according to claim 1, wherein a sulfur content is 0.5 mass % or less of the total amount of the composition.

5. The lubricant oil composition according to claim 1, wherein a phosphorus content is 0.12 mass % or less of the total amount of the composition.

6. The lubricant oil composition according to claim 1, wherein a sulfated ash content is 1.1 mass % or less.

7. The lubricant oil composition according to claim 3, wherein a sulfur content is 0.5 mass % or less of the total amount of the composition.

8. The lubricant oil composition according to claim 3, wherein a phosphorus content is 0.12 mass % or less of the total amount of the composition.

9. The lubricant oil composition according to claim 4, wherein a phosphorus content is 0.12 mass % or less of the total amount of the composition.

10. The lubricant oil composition according to claim 7, wherein a phosphorus content is 0.12 mass % or less of the total amount of the composition.

11. The lubricant oil composition according to claim 3, wherein a sulfated ash content is 1.1 mass % or less.

12. The lubricant oil composition according to claim 4, wherein a sulfated ash content is 1.1 mass % or less.

13. The lubricant oil composition according to claim 5, wherein a sulfated ash content is 1.1 mass % or less.

14. The lubricant oil composition according to claim 7, wherein a sulfated ash content is 1.1 mass % or less.

15. The lubricant oil composition according to claim 8, wherein a sulfated ash content is 1.1 mass % or less.

16. The lubricant oil composition according to claim 9, wherein a sulfated ash content is 1.1 mass % or less.

17. The lubricant oil composition according to claim 10, wherein a sulfated ash content is 1.1 mass % or less.