US4306984A
Expired / Lapsed
US
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Oil soluble metal (lower) dialkyl dithiophosphate succinimide complex and lubricating oil compositions containing same
Assignee: Chevron USA Inc
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Filing: 1980-06-19
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Granted: 1981-12-22
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Expires: 2000-06-19
Abstract
Abstract Oil insoluble metal salts of lower dialkyl dithiophosphates are rendered oil soluble when combined with alkenyl or alkyl mono- or bis-succinimides. Oil compositions containing this combination are useful as crankcase lubricants.
Inventors
- 👤 Elaine S. Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:57
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C08; C08F; C08F8/00; C08F8/42; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/08; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2070/00; C10N2070/02; F; F02; F02F; F02F7/00; F02F7/006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
166 words
A lubricating oil composition comprising a major amount of lubricating oil and a minor proportion sufficient to inhibit oxidation and corrosion of a complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid of the formula ##STR6## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR7## wherein X is amino or a group of the formula ##STR8## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6; wherein the weight of ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 2
Dependent Claim
166 words
A lubricating oil composition comprising a major amount of lubricating oil and a minor proportion sufficient to inhibit oxidation and corrosion of a complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid of the formula ##STR6## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR7## wherein X is amino or a group of the formula ##STR8## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6; wherein the weight of ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 3
Dependent Claim
30 words
The composition of claim 1 wherein component (a) is present from about 5 mmoles to 30 mmoles and component (b) is present from about 1.5% to about 15% by weight.
Claim 4
Dependent Claim
69 words
The composition of claim 1 wherein component (a) is of the formula ##STR9## wherein R 1 and R 2 is alkyl of 2 to 3 carbon atoms, M is a Group II metal; and component (b) is of the formula ##STR10## wherein X is amino or a group of the formula ##STR11## R 3 is polyisobutenyl, U is ethylene and n is an integer of from 1 to 4.
Claim 5
Dependent Claim
42 words
The composition of claim 3 wherein component (a) is zinc diisopropyldithiophosphate and component (b) is of the formula ##STR12## wherein X is amino or ##STR13## R 3 is polyisobutenyl, U is ethylene and n is an integer of from 2 to 4.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein in component (b) n is 2.
Claim 7
Dependent Claim
171 words
A lubricating oil concentrate comprising 10% to 90% by weight of a lubricating oil and from about 10% to about 90% by weight of an oxidation and corrosion inhibiting complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid of the formula ##STR14## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR15## wherein X is amino or a group of the formula ##STR16## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6, wherein the weight ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 8
Dependent Claim
171 words
A lubricating oil concentrate comprising 10% to 90% by weight of a lubricating oil and from about 10% to about 90% by weight of an oxidation and corrosion inhibiting complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid of the formula ##STR14## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR15## wherein X is amino or a group of the formula ##STR16## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6, wherein the weight ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 9
Dependent Claim
44 words
The lubricating oil concentrate of claim 6 wherein component (a) is zinc diisopropyldithiophosphate and component (b) is of the formula ##STR17## wherein X is amino or ##STR18## R 3 is polyisobutenyl, U is ethylene and n is an integer of from 2 to 4.
Claim 10
Dependent Claim
14 words
The lubricating oil concentrate of claim 7 wherein in component (b) n is 2.
Claim 11
Dependent Claim
147 words
A composition comprising a complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid and of the formula ##STR19## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR20## wherein X is amino or a group of the formula ##STR21## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6, wherein the weight ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 12
Dependent Claim
147 words
A composition comprising a complex prepared by reacting at about 25° to 180° C. (a) a metal salt of a (lower) dialkyl dithiophosphoric acid and of the formula ##STR19## wherein each of R 1 and R 2 is alkyl of 2 to 3 carbon atoms, the metal of said metal salt being a Group I metal, a Group II metal, aluminum, tin, cobalt, lead, molybdenum, manganese or nickel; with (b) an oil soluble alkenyl or alkyl mono- or bis-succinimide of the formula ##STR20## wherein X is amino or a group of the formula ##STR21## R 3 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms, U is alkylene containing 2 to 6 carbon atoms, n is an integer of from 0 to 6, wherein the weight ratio of (b) to (a) is at least in the range of from 3:1 to 10:1.
Claim 13
Dependent Claim
68 words
The composition of claim 9 wherein component (a) is of the formula ##STR22## wherein R 1 and R 2 is alkyl of 2 to 3 carbon atoms, M is a Group II metal; and component (b) of the formula ##STR23## wherein X is amino or a group of the formula ##STR24## R 3 is polyisobutenyl, U is ethylene and n is an integer of from 1 to 4.
Claim 14
Dependent Claim
43 words
The composition of claim 10 wherein component (a) is zinc diisopropyl dithiophosphate and component (b) is of the formula ##STR25## wherein X is amino or ##STR26## R 3 is polyisobutenyl, U is ethylene, and n is an integer of from 2 to 4.
Claim 15
Dependent Claim
12 words
The composition of claim 11 wherein in component (b) n is 2.
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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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |