Diesel engine oils

Patent metadata

Field	Value
Publication number	US-9353327-B2
Application number	US-201213712349-A
Country	US
Kind code	B2
Filing date	Dec 12, 2012
Priority date	Dec 16, 2011
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A lubricating oil additive composition comprising at least one carboxylate detergent wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200; at least one polyalkenyl succinimide; a first phenate detergent having a TBN of the actives of greater than about 60 to about 200; and a second phenate detergent having a TBN of the actives of greater than about 200 to about 400.

First claim

What is claimed is:

1. A lubricating oil additive composition comprising
a. at least one carboxylate detergent which is an alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent or an alkaline earth metal alkylhydroxybenzoate detergent, wherein the alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent is of the formula

wherein R is a linear hydrocarbyl group, a branched hydrocarbyl group or mixtures thereof; and further wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
b. at least one polyalkenyl succinimide;
c. a first phenate detergent having a TBN of the actives of greater than about 60 to 200;
d. a second phenate detergent having a TBN of the actives of greater than 200 to about 400, wherein at least one of the first and second phenate detergents is a sulfurized phenate detergent; and
e. a calcium salt of a Mannich base alkylphenol.

2. The lubricating oil additive composition of claim 1 wherein the poIyalkenyl succinimide is a polyisobutenyl succinimide.

3. The lubricating oil additive composition of claim 1 wherein the first phenate detergent is an alkaline earth metal phenate detergent.

4. The lubricating oil additive composition of claim 3 wherein the alkaline earth metal phenate detergent is a calcium phenate detergent.

5. The lubricating oil additive composition of claim 1 wherein the second phenate detergent is an alkaline earth metal phenate detergent.

6. The lubricating oil additive composition of claim 5 wherein the alkaline earth metal phenate detergent is a calcium phenate detergent.

7. A lubricating oil composition comprising
a. a major amount of oil of lubricating viscosity;
b. at least one carboxylate detergent which is an alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent or an alkaline earth metal alkylhyroxybenzoate detergent, wherein the alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent is of the formula

wherein R is a linear hydrocarbyl group, a branched hydrocarbyl group or mixtures thereof; and further wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
c. at least one polyalkenyl succinimide;
d. a first phenate detergent having a TBN of the actives of greater than about 60 to 200;
e. a second phenate detergent having a TBN of the actives of greater than 200 to about 400, wherein at least one of the first and second phenate detergents is a sulfurized phenate detergent; and
f. a calcium salt of a Mannich base alkylphenol.

8. The lubricating oil composition of claim 7 wherein the lubricating oil composition is a railroad engine oil.

9. A method for operating a diesel locomotive engine comprising lubricating said diesel locomotive engine with a lubricating oil composition comprising
a. a major amount of an oil of lubricating viscosity;
b. at least one carboxylate detergent which is an alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent or an alkaline earth metal alkylhydroxybenzoate detergent, wherein the alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate deterent is of the formula

wherein R is a linear hydrocarbyl group, a branched hydrocarbyl group or mixtures thereof, and further wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
c. at least one polyalkenyl succinimide;
d. a first phenate detergent having a TBN of the actives of greater than about 60 to 200;
e. a second phenate detergent having a TBN of the actives of greater than 200 to about 400, wherein at least one of the first and second phenate detergents is a sulfurized phenate detergent; and
f. a calcium salt of a Mannich base alkylphenol.

10. A method for operating an inland marine engine comprising lubricating said inland marine engine with a lubricating oil composition comprising
a. a major amount of an oil of lubricating viscosity; and
b. at least one carboxylate detergent which is an alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent or an alkaline earth metal alkylhydroxybenzoate detergent, wherein the alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent is of the formula

wherein R is a linear hydrocarbyl group, a branched hydrocarbyl group or mixtures thereof, and further wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
c. at least one polyalkenyl succinimide;
d. a first phenate detergent having a TBN of the actives of greater than about 60 to 200
e. a second phenate detergent having a TBN of the actives of greater than 200 to about 400, wherein at least one of the first and second phenate detergents is a sulfurized phenate detergent; and
f. a calcium salt of a Mannich base alkylphenol.

11. A method of improving TBN retention comprising lubricating an engine with a lubricating oil composition having
a. a major amount of an oil of lubricating viscosity;
b. at least one carboxylate detergent which is an alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent or an alkaline earth metal alkylhydroxybenzoate detergent, wherein the alkaline earth metal single-aromatic-ring hydrocarbyl carboxylate detergent is of the formula

wherein R is a linear hydrocarbyl group, a branched hydrocarbyl group or mixtures thereof; and further wherein at least one of the carboxylate detergents has a TBN of the actives of greater than about 60 to about 200;
c. at least one polyalkenyl succinimide;
d. a first phenate detergent having a TBN of the actives of greater than about 60 to 200;
e. a second phenate detergent having a TBN of the actives of greater than 200 to about 400, wherein at least one of the first and second phenate detergents is a sulfurized phenate detergent; and
f. a calcium salt of a Mannich base alkylphenol.

12. The lubricating oil additive composition of claim 1 wherein the polyalkenyl succinimide is an ethylene carbonate treated polyalkenyl succinimide.

13. The lubricating oil additive composition of claim 1 wherein the first phenate detergent is a sulfurized phenate detergent.

14. The lubricating oil additive composition of claim 1 wherein the second phenate detergent is a sulfurized phenate detergent.

15. The lubricating oil additive composition of claim 1 wherein the first and second phenate detergents are sulfurized phenate detergents.

16. The lubricating oil composition of claim 7 , wherein the polyalkenyl succinimide is an ethylene carbonate treated polyalkenyl succinimide.

17. The lubricating oil composition of claim 7 , wherein the first and second phenate detergents are sulfurized phenate detergents.

18. The lubricating oil composition of claim 7 , wherein the polyalkenyl succinimide is an ethylene carbonate treated polyalkenyl succinimide and the first and second phenate detergents are sulfurized phenate detergents.

Assignees

• Li yue-rong
• Chevron Oronite Co

Inventors

• Li yue-rong

Classifications

• C10M2207/026

  with tertiary alkyl groups · CPC title

• C10M2207/26

  Overbased carboxylic acid salts · CPC title

• C10N2030/04

  Detergent property or dispersant property · CPC title

• C10M2227/066

  derived from Mo or W · CPC title

• C10M2215/28

  Amides; Imides · CPC title