Un hidroxibenzoato sustituido con hidrocarbilo metálico sobrebasificado para reducir la precipitación de asfalteno

摘要

An overbased metal hydrocarbyl-substituted hydroxybenzoate detergent having a basicity index of less than 2 and a degree of carbonation of 80% or greater is disclosed. The overbased metal hydrocarbyl-substituted hydroxybenzoate detergent reduces asphaltene precipitation or ‘black paint’ in a marine diesel engine.