Patent ID: 8334245
Filing Date: 2012-12-18
Classification: C10M,C10N

Abstract:
1. A cylinder lubricant having a BN, determined according to standard ASTM D-2896, greater than or equal to 15 milligrams of potash per gram of lubricant, comprising: a) one or more lubricating base oils for marine engines, b) at least one overbased detergent, wherein said overbased detergent is an alkali or alkaline-earth metal-based detergent overbased with metallic carbonate salts, optionally in combination with one or more neutral detergents, c) one or more oil-soluble fatty amines and/or fatty amine derivatives, having a BN determined according to standard ASTM D-2896 between 150 and 600 milligrams of potash per gram, the percentage by mass of fatty amines and/or of derivatives thereof relative to the total weight of lubricant being chosen such that the BN provided by these compounds represents a contribution of at least 10 milligrams of potash per gram of lubricant, to the total BN of said cylinder lubricant and, the percentage by mass of overbased detergents relative to the total weight of lubricant being chosen such that the BN provided by the metallic carbonate salts represents a contribution of at most 20 milligrams of potash per gram of lubricant to the total BN of said cylinder lubricant.