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US4443360A
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Oil-soluble zinc cyclic hydrocarbyl dithiophosphate-succinimide complex and lubricating oil compositions containing same
Assignee: Chevron USA Inc
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Filing: 1982-04-19
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Granted: 1984-04-17
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Expires: 2002-04-19
Abstract
Abstract Oil-insoluble zinc salts of cyclic dithiophosphates are rendered oil soluble when combined to form a complex with alkenyl or alkyl mono- or bis-succinimides. Oil compositions containing this combination are useful as crankcase lubricants.
Inventors
- 👤 Elaine S. Yamaguchi
- 👤 Thomas V. Liston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:42
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/5537; C07F9/6564; C07F9/6571; C07F9/657109; C07F9/657118; C10M141/00; C10M141/10; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/122; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; F; F02; F02F; F02F7/00; F02F7/006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
178 words
A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor proportion sufficient to inhibit oxidation and corrosion of a complex prepared by reacting: (a) a zinc salt of a cyclic hydrocarbyl dithiophosphoric acid of the formula: ##STR8## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR9## wherein X is amino or a group of the formula: ##STR10## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 2
Dependent Claim
178 words
A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor proportion sufficient to inhibit oxidation and corrosion of a complex prepared by reacting: (a) a zinc salt of a cyclic hydrocarbyl dithiophosphoric acid of the formula: ##STR8## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR9## wherein X is amino or a group of the formula: ##STR10## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 3
Dependent Claim
32 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 percent to about 15 percent by weight.
Claim 4
Dependent Claim
103 words
The composition of claim 1 wherein component (a) is of the formula: ##STR11## wherein R 1 and R 6 are hydrogen and each of R 2 , R 3 , R 4 and R 5 are hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; and component (b) is of the formula: ##STR12## wherein X is amino or a group of the formula: ##STR13## R 7 is polyisobutenyl; U is ethylene; and n is an integer of from 1 to 4.
Claim 5
Dependent Claim
44 words
The composition of claim 3 wherein component (a) is of the formula: ##STR14## and component (b) is of the formula: ##STR15## wherein X is amino or ##STR16## R 7 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
186 words
A lubricating oil concentrate comprising 10 percent to 90 percent by weight of an oil of lubricating viscosity and from about 10 percent to about 90 percent by weight of an oxidation and corrosion inhibiting complex prepared by reacting: (a) a zinc salt of a cyclic dithiophosphoric acid of the formula: ##STR17## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR18## wherein X is amino or a group of the formula: ##STR19## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 8
Dependent Claim
186 words
A lubricating oil concentrate comprising 10 percent to 90 percent by weight of an oil of lubricating viscosity and from about 10 percent to about 90 percent by weight of an oxidation and corrosion inhibiting complex prepared by reacting: (a) a zinc salt of a cyclic dithiophosphoric acid of the formula: ##STR17## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR18## wherein X is amino or a group of the formula: ##STR19## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 9
Dependent Claim
46 words
The lubricating oil concentrate of claim 6 wherein component (a) is of the formula: ##STR20## and component (b) is of the formula: ##STR21## wherein X is amino or ##STR22## R 7 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
155 words
A composition comprising a complex prepared by reacting: (a) a zinc salt of a cyclic dithiophosphoric acid of the formula: ##STR23## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR24## wherein X is amino or a group of the formula: ##STR25## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 12
Dependent Claim
155 words
A composition comprising a complex prepared by reacting: (a) a zinc salt of a cyclic dithiophosphoric acid of the formula: ##STR23## wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and each is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; with (b) an oil-soluble alkenyl or alkyl mono- or bis-succinimide of the formula: ##STR24## wherein X is amino or a group of the formula: ##STR25## R 7 is an alkenyl or alkyl group containing from about 20 to 300 carbon atoms; U is alkylene containing 2 to 6 carbon atoms; and n is an integer of from 0 to 6; wherein the weight ratio of (b) to (a) is in the range of from 3:1 to 25:1.
Claim 13
Dependent Claim
103 words
The composition of claim 9 wherein component (a) is of the formula: ##STR26## wherein R 1 and R 6 are hydrogen and each of R 2 , R 3 , R 4 and R 5 is hydrogen or alkyl of 1 to 3 carbon atoms with the proviso that at least one of R 1 through R 6 is alkyl of from 1 to 3 carbon atoms; and component (b) is of the formula: ##STR27## wherein X is amino or a group of the formula: ##STR28## R 7 is polyisobutenyl; U is ethylene; and n is an integer of from 1 to 4.
Claim 14
Dependent Claim
44 words
The composition of claim 10 wherein component (a) is of the formula: ##STR29## and component (b) is of the formula ##STR30## wherein X is amino or ##STR31## R 7 is polyisobutylene; 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.
References Cited (Backward Citations)
US3135694A
Cited
US3089850A
Cited
US3502677A
Cited
US3284354A
Cited
GB1237581A
Cited
US3652616A
Cited
US3844960A
Cited
US3846317A
Cited
US4306984A
Cited
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| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
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