Alkyl phenol and amino phenol compositions and two-cycle engine oils and fuels containing same
Patent 4724091 Issued on February 9, 1988. Estimated Expiration Date: 
February 9, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 9, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesHydrocarbon-substituted methylol phenols Amino phenol-detergent/dispersant combinations and fuels and lubricants containing same Hydrocarbon-substituted methylol phenols Amino phenols useful as additives for fuels and lubricants Patent #: 4320021 InventorAssigneeApplicationNo. 06/481109 filed on 03/31/1983US Classes:508/412, Chalcogen attached indirectly to the nitrogen by nonionic bonding (e.g., trialkanolamines, phenol-aldehyde-amine condensates, etc.)508/549, Nitro or nitroso bonded directly to carbon508/561Oxygen or sulfur attached indirectly to the nitrogen by nonionic bondingExaminersPrimary: Howard, Jacqueline V.Attorney, Agent or FirmInternational ClassesC10M 141/06 (20060101)C10M 141/00 (20060101) C10M 167/00 (20060101) F02B 75/02 (20060101) AbstractAdditive combinations useful in lubricating compositions containing a major amount of an oil of lubricating viscosity are described. The additive compositions comprise a mixture of at least one alkyl phenol and at least one amino phenol, each having at least one hydrocarbon-based group of at least about 10 aliphatic carbon atoms. The additive compositions also are useful in fuel-lubricant mixtures for use in two-cycle internal combustion engines. Generally, the additive combinations also will contain a detergent/dispersant. | |
