Hydrocarbyl dispersants and compositions containing the...

Details Hydrocarbyl dispersants and compositions containing the... Hydrocarbyl dispersants and compositions containing the...

C - Chemistry, Metallurgy

10

M

C10M 141/06 (2006.01) C10M 133/16 (2006.01) C10M 133/56 (2006.01) C10M 141/02 (2006.01) C10M 149/04 (2006.01) C10M 159/16 (2006.01)

Patent

CA 2484558

A dispersant for use as a lubricant additive, a lubricant composition and a method for improving engine performance. The dispersant includes at least one member selected from the group consisting of hydrocarbyl-substituted succinimides, hydrocarbyl-substituted amines, and Mannich base adducts derived from hydrocarbyl-substituted phenols condensed with aldehydes and amines. The hydrocarbyl substituent is composed of a polymerization product of a raffinate I stream and isobutylene having a number average molecular weight ranging from about 500 to about 3000 as determined by gel permeation chromatography and more than about 70 mol percent of the polymerization product having a terminal vinylidene group.

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