US4358385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Texaco Inc
•
Filing: 1981-08-10
•
Granted: 1982-11-09
•
Expires: 2001-08-10
Abstract
Abstract A lubricating oil composition characterized by having a Total Base Number from about 5 to 40 comprising a mineral lubricating oil, an overbased calcium sulfonate, a zinc dihydrocarbyl dithiophosphate, an ethoxylated alkylphenol, an alkenylsuccinimide, a polymethacrylate, an ethylene-propylene copolymer, an alkylated diphenylamine and an N-alkylglycine derivative having the formula: ##STR1## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH 2 --CH 2 --NH) x H radical in which x has a value from 1 to 3, or ##STR2## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
Inventors
- 👤 Benjamin H. Zoleski
- 👤 Rodney L. Sung
- 👤 Stephen A. Levine
- 👤 William P. Cullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:34
CPC Classifications
C; C10; C10M; C10M167/00; C10M2205/00; C10M2207/00; C10M2207/04; C10M2207/046; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/28; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
367 words
A crankcase lubricating oil composition having a Total Base Number ranging from about 5 to 40 comprising a major proportion of a mineral lubricating oil containing from about 0.1 to 5 weight percent of at least one overbased calcium sulfonate, from about 0.1 to 1 weight percent of a zinc dithiophosphate represented by the formula: ##STR24## in which R is a hydrocarbyl radical or a hydroxy substituted hydrocarbyl radical having from 4 to 12 carbon atoms, from about 0.025 to 1 weight percent of an ethoxylated alkylphenol represented by the formula: ##STR25## wherein R represents an alkyl radical having from 4 to 20 carbon atoms and n has an average value ranging from about 4 to about 30, from about 0.05 to 1 weight percent of an alkylated diphenylamine represented by the formula: ##STR26## in which each R is an alkyl radical having from 1 to 4 carbon atoms and each R' is an alkyl radical having from about 4 to 16 carbon atoms, from about 0.5 to 10 weight percent of nitrogen-containing dispersant represented by the formula: ##STR27## wherein R is alkenyl of from 50 to 200 carbons and x is an integer of 0 to 10, from about 0.25 to 2.5 weight percent of a polymethacrylate having the formula: ##STR28## where R is an aliphatic radical of from 1 to 20 carbons and n is an integer of between about 600 and 35,000, from about 0.5 to 10 weight percent of an ethylene propylene copolymer having a molecular weight ranging from about 20,000 to 50,000, and, from about 0.1 to 5 weight percent of an N-alkylglycine derivative selected from the group consisting of: ##STR29## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH 2 --CH 2 --NH) x H radical in which x has a value from 1 to 3, and ##STR30## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
Claim 2
Dependent Claim
367 words
A crankcase lubricating oil composition having a Total Base Number ranging from about 5 to 40 comprising a major proportion of a mineral lubricating oil containing from about 0.1 to 5 weight percent of at least one overbased calcium sulfonate, from about 0.1 to 1 weight percent of a zinc dithiophosphate represented by the formula: ##STR24## in which R is a hydrocarbyl radical or a hydroxy substituted hydrocarbyl radical having from 4 to 12 carbon atoms, from about 0.025 to 1 weight percent of an ethoxylated alkylphenol represented by the formula: ##STR25## wherein R represents an alkyl radical having from 4 to 20 carbon atoms and n has an average value ranging from about 4 to about 30, from about 0.05 to 1 weight percent of an alkylated diphenylamine represented by the formula: ##STR26## in which each R is an alkyl radical having from 1 to 4 carbon atoms and each R' is an alkyl radical having from about 4 to 16 carbon atoms, from about 0.5 to 10 weight percent of nitrogen-containing dispersant represented by the formula: ##STR27## wherein R is alkenyl of from 50 to 200 carbons and x is an integer of 0 to 10, from about 0.25 to 2.5 weight percent of a polymethacrylate having the formula: ##STR28## where R is an aliphatic radical of from 1 to 20 carbons and n is an integer of between about 600 and 35,000, from about 0.5 to 10 weight percent of an ethylene propylene copolymer having a molecular weight ranging from about 20,000 to 50,000, and, from about 0.1 to 5 weight percent of an N-alkylglycine derivative selected from the group consisting of: ##STR29## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH 2 --CH 2 --NH) x H radical in which x has a value from 1 to 3, and ##STR30## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
Claim 3
Dependent Claim
55 words
A lubricating oil composition according to claim 1 in which said N-alkylglycine derivative is represented by the formula: ##STR31## in which R is a hydrocarbyl radical having from 10 to 20 carbon atoms and R" is a --CH 2 --CH 2 --NH) x H radical in which x has a value from 1 to 2.
Claim 4
Dependent Claim
26 words
A lubricating oil composition according to claim 1 in which R in said N-alkylglycine derivative is a hydrocarbyl radical having from 16 to 18 carbon atoms.
Claim 5
Dependent Claim
32 words
A lubricating oil composition according to claim 1 in which overbased calcium sulfonate is derived from petroleum sulfonic acids or alkylated benzene sulfonic acids having from about 12 to 200 carbon atoms.
Claim 6
Dependent Claim
26 words
A lubricating oil composition according to claim 1 containing from about 0.5 to 2 weight percent based on said lubricating oil composition of said N-alkylglycine derivative.
Claim 7
Dependent Claim
33 words
A lubricating oil composition according to claim 1 in which said N-alkylglycine derivative is N-tallow glycyl amide of ethylenediamine represented by the formula: ##STR32## wherein R represents a hydrocarbyl radical derived from tallow.
Claim 8
Dependent Claim
34 words
A lubricating oil composition according to claim 1 in which said N-alkylglycine derivative is N-coco glycyl amide of ethylenediamine represented by the formula: ##STR33## wherein R represents a hydrocarbyl radical derived from coconut oil.
Claim 9
Dependent Claim
17 words
A lubricating oil composition according to claim 1 in which said N-alkylglycine derivative is N,N-bis(2-hydroxyethyl)-N'-tallow glycine amide.
Claim 10
Dependent Claim
24 words
A lubricating oil composition according to claim 1 in which the concentration of said N-alkylglycine derivative ranges from about 0.75 to 1.5 weight percent.
Claim 11
Dependent Claim
19 words
A lubricating oil composition according to claim 1 characterized by having a TBN ranging from about 15 to 30.
References Cited (Backward Citations)
US3123570A
Cited
US2320392A
Cited
US2468012A
Cited
US2810752A
Cited
US3003961A
Cited
US3116252A
Cited
US3390081A
Cited
US3856687A
Cited
US4086172A
Cited
US4283294A
Cited
US4210541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |