Thiadiazole components, compositions, and methods
AssigneeInternational Petroleum Products & Additives Company, Inc.
InventorsXingguo R. Chen, Jeffrey A. Crow, Troy R. Haynes, Jonathan A. Crow, Brian J. Cereghino
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Abstract
Provided herein are compositions that include a thiadiazole component and a solubility enhancing component. The solubility enhancing component can include a dispersant, a detergent, or both a dispersant and a detergent. The thiadiazole component can include one or more species having a hydrocarbyl-disulfanyl moiety. The compositions may be used as a corrosion inhibitor. Also provided herein are methods for making a thiadiazole component and a composition.
Claims11
A composition comprising:
- a thiadiazole component comprising 5-(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole-2-thiol and 2,5-bis(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole;
- and
- a solubility enhancing component comprising a dispersant, wherein the dispersant comprises a 1-(amino-C2-C4 hydrocarbyl)-3-hydrocarbylpyrrolidine-2,5-dione having the following structure—
- wherein R3 is a monovalent hydrocarbyl having a molecular weight of about 500 to about 2500, R4 is a divalent C2-C4 hydrocarbyl, and a is 1 to 100;
- wherein the weight ratio of the solubility enhancing component to the thiadiazole component is about 1:99 to about 10:90,
- the weight ratio of the 5-(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole-2-thiol to the 2,5-bis(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole is about 60:40 to about 95:5, and
- wherein the composition is at least substantially soluble in a group II or a group IV base oil at a concentration of the composition of about 0.01% to about 1% by weight, based on the combined weight of the composition and the base oil.
A lubricating composition or a grease composition comprising:
- a first composition consisting essentially of [1] a thiadiazole component consisting of 5-(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole-2-thiol and 2,5-bis(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole, and [2] a solubility enhancing component consisting of a dispersant, wherein the dispersant comprises a 1-(amino-C2-C4 hydrocarbyl)-3-hydrocarbylpyrrolidine-2,5-dione having the following structure—
- wherein R3 is a monovalent hydrocarbyl having a molecular weight of about 500 to about 2500, R4 is a divalent C2-C4 hydrocarbyl, and a is 1 to 100;
- and
- a first base oil, wherein the first composition is at least substantially soluble in the first base oil, and the first base oil comprises a group II base oil or a group IV base oil;
- wherein the weight ratio of the solubility enhancing component to the thiadiazole component is about 1:99 to about 10:90, and the weight ratio of the 5-(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole-2-thiol to the 2,5-bis(C2-C30 hydrocarbyl-disulfanyl)-1,3,4-thiadiazole is about 60:40 to about 95:5, and the first composition is present in the lubricating composition in an amount of about 0.01% to about 1% by weight of the lubricating composition.
Dependencies are inferred from the claim text.