Abstract: A lubricant composition with a total nitrogen content of 0.1 to 0.25 percent by weight suitable for lubricating a two-stroke engine comprising an oil of lubricating viscosity, a synthetic ester, at least one condensation product of a fatty acid having 12 to 24 carbon atoms with a polyamine, and a Mannich dispersant.
Type:
Grant
Filed:
June 29, 2005
Date of Patent:
February 7, 2012
Assignee:
The Lubrizol Corporation
Inventors:
Laimute R. Svarcas, Michael S. Brenner, Thomas A. Nau
Abstract: A quaternary ammonium salt detergent made from the reaction product of the reaction of: (a) Mannich reaction product having a tertiary amino group, said Mannich reaction product being prepared from the reaction of a hydrocarbyl-substituted phenol, an aldehyde, and amine; and (b) a quaternizing agent suitable for converting the tertiary amino group to a quaternary nitrogen and the use of such quaternary ammonium salt detergents in a fuel composition to reduce intake valve deposits.
Type:
Grant
Filed:
September 1, 2006
Date of Patent:
March 15, 2011
Assignee:
The Lubrizol Corporation
Inventors:
Paul R. Stevenson, Dean Thetford, Jonathan S. Vilardo
Abstract: A process for producing an oil soluble interpolymer polymer of 1,2-alkylenediamine such as N-ethyl ethylenediamine, aldehyde-provider such as formaldehyde, and ortho-unsubstituted hydroxyaromatics such as 4-polyalkylene phenol is disclosed. The decyclized Mannich Base monomer units provide a higher viscosity material which is suitably substituted with a long chain hydrocarbyl para substituent such as polyisobutylene or ethylene/alpha-olefin polymer. Various ortho-substituted hydroxyaromatics such as o-cresol may be used to control the degree of polymerization. The polymers are useful as dispersants or other lubricant additives.
Type:
Grant
Filed:
June 26, 1996
Date of Patent:
June 17, 1997
Assignee:
Exxon Chemical Patents Inc.
Inventors:
Warren A. Thaler, Stephen Zushma, Antonio Gutierrez