Patent ID: 6800596
Filing Date: 2004-10-05
Classification: C10M,C10N

Abstract:
A lubricating oil composition comprising a major amount of a lubricating oil and a minor dispersant amount of a reaction product prepared by the process which comprises the steps of:reacting a polyamine with a hydrocarbyl-substituted succinic acylating agent to form a succinimide; adding an excess of an aldehyde to the succinimide to form an iminium salt of the succinimide; adding a polyphenolic compound selected from the group consisting of Bis Phenol A; 2,2â€² biphenol; 4,4â€² biphenol; 1,6 dihydroxynaphthalene; 2.6 dihydroxynaphthalene; 2,7 dihydroxynaphthalene; and a C12 alkyl phenol formaldehyde resin to the iminium salt to form a Mannich phenol coupled succinimide that exhibits properties attributed to cross-linking.