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US4070294A Expired / Lapsed US ⏱️ 0.0 years remaining

Lubricant compositions containing imidazoline-phosphonate salts as antiwear agents

Assignee: Mobil Oil AS
•
Filing: 1976-10-18
•
Granted: 1978-01-24
•
Expires: 1996-10-18
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Abstract

Abstract Organic lubricant compositions are provided containing a lubricating improving amount of a salt of (a) an alkyl, long chain alkyl acid phosphonate having the formula: <IMAGE> where R' is a substantially unbranched paraffinic alkyl group containing from about 10 to about 36 carbon atoms, and R is a hydrocarbyl group containing from 1 to about 4 carbon atoms with at least one hydrogen atom present on the carbon atom which is bonded to oxygen and (b) a substituted imidazoline of the formula: <IMAGE> where one of the R2 and R3 substituents must be a substantially unbranched paraffinic or olefinic hydrocarbyl group containing from about 12 to about 35 carbon atoms; and the other R2 or R3 substituent is selected from the group consisting of: paraffinic alkyl containing from 1 to about 35 carbon atoms, alkenyl containing from 1 to about 35 carbon atoms, and hydroxy, alkoxy, alkoxymethoxy, and oxo-substituted alkyl and alkenyl containing from 1 to about 20 carbon atoms. Particularly contemplated are lubricating oils and greases containing the aforementioned alkylamine salts as anti-wear agents and friction modifiers.

Inventors

  • 👤 Daniel G. Jones

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 11:47
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/12; C10M2201/00; C10M2201/14; C10M2203/00; C10M2203/10; C10M2203/102; C10M2203/104; C10M2203/106; C10M2203/108; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/223; C10M2215/224; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10M2223/06; C10M2223/063; C10M2223/065; C10N; C10N2010/00; C10N2010/04

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 192 words
A lubricant composition comprising a major proportion of a lubricant base selected from the group consisting of mineral oils, synthetic oils and greases; and an antiwear amount of a salt of (a) an alkyl, long chain alkyl acid phosphonate having he formula: ##STR5## where R' is a substantially unbranched paraffinic alkyl group consisting from about 10 to about 36 carbon atoms, and R is a hydrocarbyl group containing from 1 to about 4 carbon atoms with at least one hydrogen atom present on the carbon atom which is bonded to oxygen and (b) a substituted imidazoline o the formula: ##STR6## where one of the R 2 and R 3 substituents must be a substantially unbranched paraffinic or olefinic hydrocarbyl group containing from about 12 to about 35 carbon atoms; and the other R 2 or R 3 substitutent is selected from the group consisting of: paraffinic alkyl containing from 1 to about 35 carbon atoms, alkenyl containing from 1 to about 35 carbon atoms, substituted alkyl and substituted alkenyl containing from 1 to about 20 carbon atoms, wherein said substituents are selected from the group consisting of hydroxy, alkoxy, alkoxy-methoxy and oxo.
Claim 2
Dependent Claim 192 words
A lubricant composition comprising a major proportion of a lubricant base selected from the group consisting of mineral oils, synthetic oils and greases; and an antiwear amount of a salt of (a) an alkyl, long chain alkyl acid phosphonate having he formula: ##STR5## where R' is a substantially unbranched paraffinic alkyl group consisting from about 10 to about 36 carbon atoms, and R is a hydrocarbyl group containing from 1 to about 4 carbon atoms with at least one hydrogen atom present on the carbon atom which is bonded to oxygen and (b) a substituted imidazoline o the formula: ##STR6## where one of the R 2 and R 3 substituents must be a substantially unbranched paraffinic or olefinic hydrocarbyl group containing from about 12 to about 35 carbon atoms; and the other R 2 or R 3 substitutent is selected from the group consisting of: paraffinic alkyl containing from 1 to about 35 carbon atoms, alkenyl containing from 1 to about 35 carbon atoms, substituted alkyl and substituted alkenyl containing from 1 to about 20 carbon atoms, wherein said substituents are selected from the group consisting of hydroxy, alkoxy, alkoxy-methoxy and oxo.
Claim 3
Dependent Claim 24 words
A lubricant composition as defined in claim 1 wherein said salt is present in an amount from about 0.2 to about 1.5%, by weight.
Claim 4
Dependent Claim 24 words
A lubricant composition as defined in claim 1 wherein said salt is present in an amount from about 0.4 to about 1%, by weight.
Claim 5
Dependent Claim 16 words
A lubricant composition as defined in claim 1 wherein said substituted imidazoline is 1-(2-hydroxy ethyl)-2-heptadecenyl imidazoline.
Claim 6
Dependent Claim 16 words
A lubricant composition as defined in claim 1 wherein said phosphonate is methyl octadecyl acid phosphonate.

References Cited (Backward Citations)

CA668735A Cited
US2674616A Cited
US2858332A Cited
US2874120A Cited
US3634239A Cited
US3793199A Cited
US3979308A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-01-23 1981-07-25 1982-01-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-01-23 1985-07-25 1986-01-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-01-23 1989-07-25 1990-01-24 $7700.00 Window Closed / Lapsed

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