US5076945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil containing ashless non-phosphorus additive
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1990-09-14
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Granted: 1991-12-31
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Expires: 2010-09-14
Abstract
Abstract A lubricating oil composition having improved antiwear, antioxidation, and extreme pressure performance comprises a lubricating oil and a long chain hydrocarbyl amine, such as tallow amine, salt or amide of a derivative of benzoic acid or dithiobenzoic acid such as 4-hydroxy-3, 5-di-tert-butyldithiobenzoic acid.
Inventors
- 👤 Jacob J. Habeeb
- 👤 Morton Beltzer
- 👤 Nicholas Feldman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:05
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/16; C10M133/04; C10M133/06; C10M135/00; C10M135/12; C10M135/14; C10M135/18; C10M2207/00; C10M2207/10; C10M2207/14; C10M2207/141; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/06; C10M2219/062; C10M2219/066
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
109 words
A lubricating oil composition comprising a lubricating oil basestock and about 0.1-5 wt. % of an oil-soluble additive comprises of a hydrocarbyl substituted amine salt of a compound having the formula: ##STR3## wherein X is oxygen or sulfur, and R 1 , R 2 , R 3 , R 4 and R 5 are selected from hydrogen; a hydrocarbyl group containing 1 to 24 carbon atoms; a hydroxy group, and an oxygen-containing hydrocarbyl group containing 1 to 24 carbon atoms and at least one of the radicals R 1 , R 2 , R 3 , R 4 and R 5 is a hydrocarbyl group containing 1-24 carbon atoms.
Claim 2
Dependent Claim
109 words
A lubricating oil composition comprising a lubricating oil basestock and about 0.1-5 wt. % of an oil-soluble additive comprises of a hydrocarbyl substituted amine salt of a compound having the formula: ##STR3## wherein X is oxygen or sulfur, and R 1 , R 2 , R 3 , R 4 and R 5 are selected from hydrogen; a hydrocarbyl group containing 1 to 24 carbon atoms; a hydroxy group, and an oxygen-containing hydrocarbyl group containing 1 to 24 carbon atoms and at least one of the radicals R 1 , R 2 , R 3 , R 4 and R 5 is a hydrocarbyl group containing 1-24 carbon atoms.
Claim 3
Dependent Claim
34 words
The lubricating oil composition of claim 1 wherein the hydrocarbyl substituted amine used in the preparation of the oil-soluble additive comprises at least one straight chain alkyl group containing 8 to 40 carbon atoms.
Claim 4
Dependent Claim
36 words
The lubricating oil composition of claim 2 wherein at least one of the radicals R 1 , R 2 , R 3 , R 4 or R 5 is a hydrocarbyl radical containing 1-18 carbon atoms.
Claim 5
Dependent Claim
11 words
The lubricating oil composition of claim 3 wherein X represents sulfur.
Claim 6
Dependent Claim
36 words
The lubricating oil composition of claim 4 wherein at least one of the radicals R 1 , R 2 , R 3 , R 4 or R 5 is an alkyl group containing 1-6 carbon atoms.
Claim 7
Dependent Claim
26 words
The lubricating oil composition of claim 5 wherein the hydrocarbyl substituted amine comprises at least one straight chain alkyl group containing 12 to 24 carbon atoms.
Claim 8
Dependent Claim
16 words
The lubricating oil composition of claim 6 wherein the hydrocarbyl substituted amine is a tallow amine.
Claim 9
Dependent Claim
21 words
The lubricating oil composition of claim 7 wherein the oil soluble additive is a ditallow amine salt of 4-hydroxy-3, 5-di-tert-butyldithiobenzoic acid.
Claim 10
Dependent Claim
15 words
The lubricating oil composition of claim 1 wherein said composition is ashless and nonphosphorus containing.
References Cited (Backward Citations)
US4877541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |