Abstract: New, highly effective detergent/dispersants for use in spark-ignition fuels comprising Mannich condensation products formed from (i) at least one substituted hydroxyaromatic compound having on the ring both (a) an aliphatic hydrocarbyl substituent derived from a polyolefin having a number average molecular weight in the range of about 500 to about 3000, and (b) a C1-4 (ii) at least one secondary amine; and (iii) at least one aldehyde are described. Carrier such as ploy(oxyalkylene) compounds further enhance the effectiveness of these Mannich condensation products in minimizing or reducing intake valve deposits and/or intake valve sticking.
Type:
Grant
Filed:
February 2, 2001
Date of Patent:
October 5, 2004
Assignee:
Ethyl Corporation
Inventors:
Dennis J. Malfer, Andrea T. Noble, William J. Colucci, Roger M. Sheets
Abstract: The lubricating oil of the present invention has a viscosity suitable for use in a diesel engine and includes at least one functionalized olefin polymer, and at least one zinc dialkyl dithiophosphate (ZDDP). The ZDDP is made from a mixture of primary alcohols or a mixture of primary and secondary alcohols, wherein the lubricant has a high boundary film value greater than or equal to 15, and preferably greater than 60, as measured by using a High Frequency Reciprocating Rig (HFRR).
Type:
Grant
Filed:
August 21, 2002
Date of Patent:
July 27, 2004
Assignee:
Ethyl Corporation
Inventors:
Mark Thomas Devlin, Charles A. Passut, Carl K. Esche, Jr., John T. Loper
Abstract: The present invention relates to a polymer blend containing a high ethylene content ethylene-propylene copolymer and a lower ethylene content ethylene-propylene copolymer. The polymer blend of the present invention is useful for the preparation of viscosity index improvers with improved lower temperature properties relative to conventional viscosity index improvers.
Type:
Grant
Filed:
March 15, 2002
Date of Patent:
June 22, 2004
Assignee:
Ethyl Corporation
Inventors:
Munmaya K. Mishra, Raymond G. Saxton, Luis C. Salazar, Gary J. Spedale
Abstract: The invention relates to an improved process for producing organomolybdenum compositions with high molybdenum content that are highly useful as lubricant additives, in which the process involves reacting a fatty oil with a diamine, followed by reaction with a molybdenum source. The process of the present invention does not require a volatile organic solvent to promote molybdenum incorporation and produces an organomolybdenum composition having a high molybdenum content. In addition, the process can be conducted in the absence of sulfur and phosphorus-containing reactants.
Abstract: A method, apparatus, and fuel composition for the protection of a catalytic after treatment system and a method for protecting a catalytic after treatment system in a lean burn system are disclosed. A scavenging agent is introduced into the combustion chamber in an amount effective to complex with catalytic poisoning combustion byproducts and improve emissions system durability. In a preferred embodiment, the scavenger is an organometallic compound which also imparts additional desirable properties to the fuel.
Type:
Grant
Filed:
December 12, 2000
Date of Patent:
October 7, 2003
Assignee:
Ethyl Corporation
Inventors:
Joseph W. Roos, Martin J. Openshaw, Herbert M. Scull