Lubricant composition and continuously-variable transmission

Patent metadata

Field	Value
Publication number	US-9506010-B2
Application number	US-39179210-A
Country	US
Kind code	B2
Filing date	Sep 15, 2010
Priority date	Sep 25, 2009
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A lubricating oil composition is provided by mixing a lubricant base oil with components (A) to (C) as follows:
(A) a tertiary amine represented by a formula (1) below,

where: R 1 is a hydrocarbon group having 16 to 22 carbon atoms and R 2 and R 3 independently represent a hydrocarbon group having 1 to 2 carbon atoms, R 2 and R 3 being adapted to form a heterocyclic ring with terminal ends thereof being bonded;
(B) at least one of acid phosphate and acid phosphite; and (C) at least one of metal sulfonate, metal phenate and metal salicylate.

First claim

The invention claimed is:

1. A composition, comprising:
a lubricant base oil;
(A) at least one tertiary amine of the formula (1) that provides a nitrogen content of from 0.005 mass % to 0.1 mass % based on the total mass of the composition:

wherein:
R 1 is an alkyl group comprising 16 to 22 carbon atoms, and
R 2 and R 3 are each independently a hydrocarbon group comprising 1 to 2 carbon atoms or
R 2 and R 3 together form a heterocyclic ring;

(B) at least one member selected from the group consisting of 2 ethylhexyl hydrogen phosphite and 2-ethylhexyl acid phosphate that provides a phosphorous content of from 0.02 mass % to 0.09 mass % based on the total mass of the composition;
(C) at least one member selected from the group consisting of an overbased calcium sulfonate, an overbased calcium phenate, and an overbased calcium salicylate that provides a calcium content in an amount of from 0.01 to 0.1 mass % based on the total mass of the composition; and
(D) about 0.05 to 5 mass % based on the total mass of the composition of tricresyl phosphate.

2. The composition of claim 1 , wherein (A) comprises dimethyl hexadecyl amine.

3. The composition of claim 1 , wherein (A) comprises dimethyl octadecyl amine.

4. The composition of claim 1 , wherein (A) comprises dimethyl heneicosyl amine.

5. The composition of claim 1 , wherein (A) comprises diethyl octadecyl amine.

6. The composition of claim 1 , wherein (A) comprises methyl ethyl octadecyl amine.

7. The composition of claim 1 , wherein (B) comprises mono-2-ethylhexyl acid phosphate and di-2-ethylhexyl acid phosphate.

8. The composition of claim 1 , wherein (B) comprises 2-ethylhexyl hydrogen phosphite.

9. The composition of claim 1 , wherein (C) comprises an overbased calcium salt of an alkyl aromatic sulfonic acid.

10. The composition of claim 1 , wherein (C) comprises an alkaline earth metal phenate selected from the group consisting of an overbased calcium salt of an alkylphenol, an overbased calcium salt of an alkylphenol sulfide, and an overbased calcium salt of a Mannich reaction product of an alkylphenol.

11. The composition of claim 1 , wherein (C) comprises an overbased calcium salt of an alkyl salicylic acid.

12. The composition of claim 1 , having the nitrogen content derived from (A) of from 0.01 mass % to 0.1 mass % based on the total mass of the composition.

13. The composition of claim 1 , having the phosphorus content derived from (B) of from 0.03 mass % to 0.09 mass % based on the total mass of the composition.

14. The composition of claim 1 , having the calcium content derived from (C) in a range from 0.02 to 0.08 mass % based on the total mass of the composition.

15. A continuously variable transmission, comprising:
the composition of claim 1 ,
wherein the composition is fed into the continuously variable transmission.

16. A method for lubricating a continuously variable transmission, the method comprising:
feeding the composition of claim 1 into a continuously variable transmission.

Assignees

• Narita Keiichi
• Idemitsu Kosan Co

Inventors

• Narita Keiichi

Classifications

• C10M2207/027

  Neutral salts thereof · CPC title

• C10M2223/041

  Triaryl phosphates · CPC title

• C10M2207/262

  derived from hydroxy substituted aromatic acids, e.g. salicylates · CPC title

• C10M163/00 Primary

  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 title

• C10M2223/06

  having phosphorus-to-carbon bonds · CPC title