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US4358385A
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Lubricating oil composition
Assignee: Texaco Inc
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Filing: 1981-08-10
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Granted: 1982-11-09
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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 10:48
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.
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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 |