Toxicologically acceptable alkylphenol detergents as friction modifiers in automotive lubricating oils
a technology of hydrocarbyl phenol and friction modifier, which is applied in the direction of additives, petroleum industry, lubricant composition, etc., can solve the problems of increasing scrutiny of certain alkylphenols and products prepared from them, and none of the art teaches the use of an alternative alkyl phenol in driveline devices
Inactive Publication Date: 2018-12-13
THE LUBRIZOL CORP
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Benefits of technology
The patent text describes a technology for providing a toxicologically acceptable alkylphenol detergent in a driveline device by supplying an alkylphenol detergent to the device. The detergent can be an alkylphenol detergent that has at least one unit of an alkyl-substituted phenol where the alkyl group is derived from oligomers of n-butene, higher alphaolefins, or mixtures thereof. The detergent can also include one or more alkali metals, one or more alkaline earth metals, or mixtures thereof. The detergent can be an overbased sulfur-bridged alkylphenol detergent or a neutral or overbased salt of alkylsalicyclic acid. The lubricant composition can also include other additives such as phosphorus-containing antiwear agents, calcium-containing detergents, other friction modifiers, sulphur-containing extreme pressure agents, sulphur-containing corrosion inhibitors, or combinations thereof. The lubricant composition can be used in manual, automatic, or off-highway vehicles.
Problems solved by technology
Recently, however, certain alkylphenols and products prepared from them have come under increased scrutiny due to their association as potential endocrine disruptive materials.
None of the art teaches the use of an alternative alkyl phenol in driveline devices.
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[0029]Various preferred features and embodiments will be described below by way of non-limiting illustration. When used herein, the shorthand “wt %” refers to the weight percent of the material referred to based on a total weight of the composition within which the material is included.
[0030]The disclosed technology provides a lubricating composition for automotive gears, such as transmissions, including an alkylphenol detergent, as well as methods for lubricating automotive gears and a use as disclosed herein.
[0031]One of the materials of the presently disclosed technology may be a bridged alkylphenol compound. Such materials in general, their methods of preparation, and use in lubricants are well known from, for instance, the above-referenced U.S. Pat. No. 2,680,096, Walker et al. They may be prepared starting from alkyl phenol such as alkylphenols derived from oligomers of n-butene, or mixtures thereof, any of which are readily available as starting materials. The alkylation of p...
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Abstract
Description
BACKGROUND OF THE INVENTION[0001]The disclosed technology relates to the use of toxicologically acceptable hydrocarbyl- (e.g. alkyl-) phenol detergents and their salts in automotive lubricating oils, such as, for example, automatic or manual transmissions.[0002]Phenol-based detergents are known. Among these are phenates based on phenolic monomers, linked with sulfur bridges or alkylene bridges such as methylene linkages derived from formaldehyde. The phenolic monomers themselves are typically substituted with an aliphatic hydrocarbyl group to provide a measure of oil solubility. The hydrocarbyl groups may be alkyl groups, and, historically, dodecylphenol (or propylene tetramer-substituted phenol) has been widely used. An early reference to basic sulfurized polyvalent metal phenates is U.S. Pat. No. 2,680,096, Walker et al., Jun. 1, 1954; see also U.S. Pat. No. 3,372,116, Meinhardt, Mar. 5, 1968.[0003]Recently, however, certain alkylphenols and products prepared from them have come u...
Claims
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IPC IPC(8): C10M169/04C10M129/10C10M137/02C10M135/30C10M129/54C10M141/10C10M135/36C10M137/10C10M135/04
CPCC10M169/04C10M129/10C10M137/02C10M135/30C10M129/54C10M141/10C10M135/36C10M137/10C10M135/04C10M2203/003C10M2207/023C10M2207/028C10M2223/049C10M2219/08C10M2207/144C10M2207/262C10M2219/106C10M2223/045C10M2219/022C10N2230/04C10N2230/06C10N2240/044C10N2240/042C10N2240/10C10M159/22C10M163/00C10M2203/1006C10M2203/1025C10M2205/0285C10M2207/027C10M2219/00C10M2219/088C10M2219/089C10M2223/00C10M2223/043C10N2020/071C10N2030/40C10N2030/52C10N2040/044C10N2040/042C10N2010/04C10N2020/02C10N2030/04C10N2030/06C10N2040/25
Inventor MCKENZIE, BLAYNE M.WALKER, GARY M.ROSKI, JAMES P.DELBRIDGE, EWAN E.
Owner THE LUBRIZOL CORP