US4834893A
Expired / Lapsed
US
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Substituted phosphorodithioates and their metal salts as multifunctional additives
Assignee: Mobil Oil AS
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Filing: 1987-12-31
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Granted: 1989-05-30
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Expires: 2007-12-31
Abstract
Abstract Phosphorodithioate substituted carboxylic anhydride or acid derivates and their corresponding metal salts have been found to be effective multifunctional additives for various lubricants and fuels.
Inventors
- 👤 John P. Doner
- 👤 Liehpao O. Farng
- 👤 Andrew G. Horodysky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:05
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2633; C10L1/265; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/047; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
106 words
A composition comprising a major amount of an oil of lubricating viscosity or grease or other solid lubricant prepared therefrom and a minor multifunctional antioxidant/antirust/antiwear/corrosion inhibiting amount of a phosphorodithioate derived alkenyl carboxylic anhydride or acid derivative thereof or their corresponding metal salts or mixtures thereof wherein said phosphorodithioate derived alkenyl carboxylic anhydride is a product of reaction made by (a) the reaction of a phosphorodithioic acid is substantially equimolar amount with an . . . alkylene oxide to form phosphorodithioic-derived alcohols which are then; (b) reacted in substantially stoichiometric amount with carboxylic dibasic anhydrides or acids to form the corresponding dibasic acid esters or diesters.
Claim 2
Dependent Claim
106 words
A composition comprising a major amount of an oil of lubricating viscosity or grease or other solid lubricant prepared therefrom and a minor multifunctional antioxidant/antirust/antiwear/corrosion inhibiting amount of a phosphorodithioate derived alkenyl carboxylic anhydride or acid derivative thereof or their corresponding metal salts or mixtures thereof wherein said phosphorodithioate derived alkenyl carboxylic anhydride is a product of reaction made by (a) the reaction of a phosphorodithioic acid is substantially equimolar amount with an . . . alkylene oxide to form phosphorodithioic-derived alcohols which are then; (b) reacted in substantially stoichiometric amount with carboxylic dibasic anhydrides or acids to form the corresponding dibasic acid esters or diesters.
Claim 3
Dependent Claim
69 words
The composition of claim 1 wherein said phosphorodithioate derived alkenyl carboxylic anhydride is a product of reaction made by (a) the reaction of a phosphorodithioic acid with a C 2 to about a C 122 alkylene oxide thereby forming phosphorodithioate-derived alcohols which are then; (b) reacted with about C 8 to about a C 100 carboxylic dibasic anhydride or acid thereby forming the corresponding dibasic acid esters or diesters.
Claim 4
Dependent Claim
34 words
The composition of claim 1 wherein said products are converted to their corresponding metal salt by reaction with almost molar quantities, or less than molar quantities, or more than molar quantities of metal ions.
Claim 5
Dependent Claim
34 words
The composition of claim 2 wherein said products are converted to their corresponding metal salt by reaction with almost molar quantities, or less than molar quantities, or more than molar quatities of metal ions.
Claim 6
Dependent Claim
22 words
The composition of claim 1 wherein the said metal is selected from the group consisting of alkali, alkaline earth and transition metals.
Claim 7
Dependent Claim
11 words
The composition of claim 5 wherein the said metal is lithium.
Claim 8
Dependent Claim
11 words
The composition of claim 5 wherein the said metal is copper.
Claim 9
Dependent Claim
18 words
The composition of claim 1 wherein the said multifunctional derivative is O,O-(di-2-ethylhexyl)-S-(2-hydroxypropyl) phosphorodithioate substituted dodecenyl succinic acid ester.
Claim 10
Dependent Claim
22 words
The composition of claim 1 wherein the said multifunctional derivative is the lithium salt of O,O-di-2-ethylhexyl)-S-(2-hydroxypropyl) phosphorodithioate substituted dodecenyl succinic acid esters.
Claim 11
Dependent Claim
22 words
The composition of claim 1 wherein the said multifunctional derivative is the cupric salt of O,O-di(2-ethylhexyl)-S-(2-hydroxypropyl) phosphorodithioate substituted dodecenyl succinic and esters.
Claim 12
Dependent Claim
21 words
The composition of claim 1 wherein said oil of lubricating viscosity is selected from mineral oils, synthetic oils and mixtures thereof.
Claim 13
Dependent Claim
12 words
The composition of claim 11 wherein said oil is a mineral oil.
Claim 14
Dependent Claim
12 words
The composition of claim 11 wherein said oil is a synthetic oil.
Claim 15
Dependent Claim
16 words
The composition of claim 10 wherein said oil is a mixture of synthetic and mineral oils.
Claim 16
Dependent Claim
12 words
The composition of claim 1 wherein said composition is a grease composition.
Claim 17
Dependent Claim
17 words
The composition of claim 15 wherein said grease is synthetic and/or mineral oil lithium complex thickened grease.
Claim 18
Dependent Claim
54 words
A product of reaction made by reacting a phosphorodithioate acid in substantially equimolar amounts with an alkylene oxide to form a phosphorodithioate derived alcohol which is then reacted in substantially stoichiometric amounts with a dibasic carboxylic acid or anhydride to form multifunctional lubricant additive products comprising phosphorodithioic acid derived dibasic acid esters or diesters.
Claim 19
Dependent Claim
54 words
A product of reaction made by reacting a phosphorodithioate acid in substantially equimolar amounts with an alkylene oxide to form a phosphorodithioate derived alcohol which is then reacted in substantially stoichiometric amounts with a dibasic carboxylic acid or anhydride to form multifunctional lubricant additive products comprising phosphorodithioic acid derived dibasic acid esters or diesters.
Claim 20
Dependent Claim
17 words
The product of claim 17 wherein the phosphorodithioic acid is a dialkyl or a diaryl phosphorodithioic acid.
Claim 21
Dependent Claim
11 words
The product of claim 7 wherein said acid is di-(2-ethylhexyl)-phosphorodithioic acid.
Claim 22
Dependent Claim
17 words
The product of claim 17 wherein the additive product is 0,O-(di-2-ethylhexyl)-S-(2-hydroxypropyl) phosphorothioate substituted dodecenyl succinic acid ester).
Claim 23
Dependent Claim
34 words
The product of claim 18 wherein said product is converted to a corresponding metal salt by reaction with almost molar quantities, or less than molar quantities, or more than molar quantities of metal ions.
Claim 24
Dependent Claim
21 words
The product of claim 21 wherein said metal is selected from the groups consisting of alkali, alkaline earth and transition metals.
Claim 25
Dependent Claim
10 words
The product of claim 22 herein said metal is lithium.
Claim 26
Dependent Claim
10 words
The product of claim 23 wherein said metal is copper.
Claim 27
Dependent Claim
21 words
The product of claim 23 wherein the additive product is the lithium salt of O,O-di(2-ethylhexyl)-S-(2-hydroxypropyl) phosphorodithioate substituted dodecenyl succinic and esters.
Claim 28
Dependent Claim
21 words
The product of claim 24 wherein the said metal is the cupric salt of O,O-di(2-ethylhexyl)-S-(2-hydroxypropyl) phosphorodithioate substituted dodecenyl succinic and esters.
Claim 29
Dependent Claim
101 words
The additive product of claim 17 comprising at least one or more of the following general structures or mixtures thereof: ##STR4## wherein R is C 3 to about C 30 hydrocarbyl or hydrocarbyl-oxyhydrocarbylene or mixtures thereof; R 1 , R 2 , R 3 and R 4 are hydrogens or are individually selected from C 1 to about C 30 hydrocarbyl and R 5 to R 8 are hydrogens or hydrocarbyl groups or aralkyl or cycloalkyl groups having from 1 to about 10 carbon atoms and where R 9 is a C 1 to about a C 60 hydrocarbon based group.
Claim 30
Dependent Claim
100 words
The additive product of claim 22 comprising at least one or more of the following general structures: ##STR5## wherein n is 1-3 and R is C 3 to about C 30 hydrocarbyl or hydrocarbyl-oxyhydrocarbylene or mixtures thereor; R 1 R 2 R 3 and R 4 are hydrogens or are individually selected from C 1 to about C 30 hydrocarbyl and R 5 to R 8 are hydrogens or hydrocarbyl groups or aralkyl or cycloalkyl groups having from 1 to about 10 carbon atoms and where R 9 is a C 1 to about a C 60 hydrocarbon based group.
Claim 31
Dependent Claim
11 words
The additive product of claim 28 wherein the metal is lithium.
Claim 32
Dependent Claim
11 words
The additive product of claim 28 wherein the metal is copper.
References Cited (Backward Citations)
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