Lubricant Composition

Patent metadata

Field	Value
Publication number	US-2016289588-A1
Application number	US-201414392398-A
Country	US
Kind code	A1
Filing date	Nov 4, 2014
Priority date	Nov 4, 2013
Publication date	Oct 6, 2016
Grant date	—

Abstract

A lubricant composition for a compression-ignition internal combustion engine comprises: (i) an amine as an ashless fuel additive having a total base number (“TBN”) of from about 200 to about 600 mg KOH/g when tested according to ASTM D2896; and (ii) a detergent selected from metal sulfonates, phenates, salicylates, carboxylates, thiophosphonates, and combinations thereof. The lubricant composition has a TBN of from about 20 to about 130 mg KOH/g when tested according to ASTM D2896, The amine contributes greater than about 30% of the TBN of the lubricant composition. Further, a method of lubricating an internal combustion engine with the lubricant composition comprises the steps of injecting a fuel and the lubricant composition into a cylinder to form a mixture, and combusting the mixture via compression-ignition.

First claim

1 . A lubricant composition for a compression-ignition internal combustion engine, said lubricant composition comprising:
(i) an amine as an ashless fuel additive having a total base number (“TBN”) of from about 200 to about 600 mg KOH/g when tested according to ASTM D2896, and (ii) a detergent selected from metal sulfonates, phenates, salicylates, carboxylates, thiophosphonates, and combinations thereof, wherein a TBN of said lubricant composition is from about 20 to about 130 mg KOH/g when tested according to ASTM D2896; and wherein a TBN contribution of said amine to said TBN of said lubricant composition is greater than about 30%.

2 . A lubricant composition as claimed in claim 1 , wherein a TBN contribution of said amine to said TBN of said lubricant composition is greater than a TBN contribution of said detergent to said TBN of said lubricant composition.

3 . A lubricant composition as claimed in claim 1 , wherein said amine has a TBN of from about 250 to about 550 mg KOH/g when tested according to ASTM D2896.

4 . A lubricant composition as claimed in claim 1 , wherein said amine has the following general structure:

wherein R 1 , R 2 , and R 3 are independently a hydrogen atom or a C 1 through C 15 hydrocarbon group.

5 . A lubricant composition as claimed in claim 4 , wherein at least one of R 1 , R 2 , and R 3 is a branched or a cyclic hydrocarbon group.

6 . A lubricant composition as claimed in claim 5 , wherein said amine has the following general structure:

wherein R 4 is a linear or cyclic C 3 to C 11 hydrocarbon.

7 . A lubricant composition as claimed in claim 6 , wherein R 4 is a linear C 9 to C 11 hydrocarbon.

8 . (canceled)

9 . A lubricant composition as claimed in claim 5 , wherein said amine is a tertiary amine.

10 . A lubricant composition as claimed in claim 5 , wherein at least two of R 1 , R 2 , and R 3 is a branched or cyclic C 2 to C 7 hydrocarbon.

11 . A lubricant composition as claimed in claim 10 , wherein said amine has the following general structure:

wherein R 3 is a C 1 to C 3 hydrocarbon.

12 - 13 . (canceled)

14 . A lubricant composition as claimed in claim 9 , wherein said amine has the following structure:

15 . A lubricant composition as claimed in claim 1 , wherein said amine is present in an amount of from about 1 to about 45 wt. % based on the total weight of said lubricant composition.

16 . A lubricant composition as claimed in claim 1 , wherein said detergent comprises an overbased metal and wherein said detergent is present in an amount of from about 0.1 to about 35 wt. % based on the total weight of said lubricant composition.

17 . (canceled)

18 . A lubricant composition as claimed in claim 1 , further comprising a polyisobutylene succinic anhydride polyamine and/or a polyalkenyl succinimide polyamine, said polyisobutylene succinic anhydride polyamine and/or said polyalkenyl succinimide polyamine having a weight average molecular weight (M w ) of from about 200 to about 3000 g/mol.

19 - 20 . (canceled)

21 . A lubricant composition as claimed in claim 1 , further comprising a base oil selected from American Petroleum Institute (API) Group I oil, API Group II oil, API Group III oil, API Group IV oil, API Group V, and combinations thereof.

22 - 24 . (canceled)

25 . A lubricant composition as claimed in claim 1 , that remains homogeneous and does not phase separate when exposed to a temperature of 60° C. for 90 days.

26 . A lubricant composition as claimed in claim 1 , having a sulfated ash value of less than about 45,000 ppm when tested according to ASTM D874.

27 . (canceled)

28 . A lubricant composition for a compression-ignition internal combustion engine, said lubricant composition comprising:
(i) an amine as an ashless fuel additive having the following structure:

PS (ii) a detergent comprising a metal sulfonate, and
(iii) a polybutenyl succinic anhydride polyamine.

29 . A marine cylinder lubricant composition comprising:
(i) an amine as an ashless fuel additive having a total base number (“TBN”) of from about 200 to about 600 mg KOH/g when tested according to ASTM D2896, (ii) a detergent selected from metal sulfonates, phenates, salicylates, carboxylates, thiophosphonates, and combinations thereof, optionally, (iii) a polyalkenyl succinic anhydride polyamine, and (iv) a base oil selected from American Petroleum Institute (API) Group I oil, API Group II oil, API Group III oil, API Group IV oil, API Group V, and combinations thereof, wherein a TBN of said lubricant composition is from about 20 to about 130 mg KOH/g when tested according to ASTM D2896; and wherein a TBN contribution of said amine to said TBN of said lubricant composition is greater than about 30%.

30 . A method of lubricating an internal combustion engine with the lubricant composition as claimed in claim 1 , said method comprising the steps of:
(A) injecting a fuel and the lubricant composition into a cylinder to form a mixture, the lubricant composition comprising:
(i) an amine as ashless fuel additive having a TBN of from about 200 to about 600 mg KOH/g when tested according to ASTM D2896,
(ii) a detergent selected from metal sulfonates, phenates, salicylates, and combinations thereof,
wherein a TBN of the lubricant composition is from about 20 to about 130 mg KOH/g when tested according to ASTM D2896; and wherein a TBN contribution of the amine to the TBN of the lubricant composition is greater than about 30% of the TBN of the lubricant composition; (B) combusting the mixture comprising the fuel and the lubricant composition via compression-ignition.

31 - 44 . (canceled)

45 . A method of lubricating an internal combustion engine as claimed in claim 30 , wherein the fuel is diesel fuel which includes sulfur.

46 . (canceled)

47 . A method of lubricating an internal combustion engine as claimed in claim 30 , wherein the fuel and the lubricant composition are combined at a ratio of from about 100:1 to about 1000:1.

Assignees

• Basf Se

Inventors

• Desantis Kevin J
• Hoey Michael D
• Jones Stephen R

Classifications

• C10N2030/18

  Anti-foaming property · CPC title

• C10N2030/50

  Emission or smoke controlling properties · CPC title

• C10N2030/54

  Fuel economy · CPC title

• C10N2030/52

  Base number [TBN] · CPC title

• C10N2030/45

  Ash-less or low ash content · CPC title