摘要:
A composition of matter comprising an amine acylated with a hydrocarbyl group substituted carboxylic acylating agent containing an average of from 1.3 to 1.6 groups derived from α,β-unsaturated carboxylic compounds per Mn of the hydrocarbyl group, wherein the hydrocarbyl group has Mn determined by GPC ranging from 1500 to 3000, the amine comprises polyamine bottoms and said acylated amine has total base number (TBN) ranging from 17 to 35. A method for preparing the composition, lubricating oils containing the composition and, in another embodiment, lubricating oil compositions of this invention further comprising a metal overbased sulfonate detergent.
摘要翻译:包含用烃基取代的羧酸酰化剂酰化的胺的物质组合物,其每平均含有衍生自α,β-不饱和羧酸化合物的平均1.3至1.6个基团,每个烃基,其中烃基具有通过GPC测定为1500至3000的 M n N,所述胺包括多胺底物,并且所述酰化胺具有总碱 编号(TBN)为17至35.一种制备组合物的方法,含有该组合物的润滑油,在另一个实施方案中,还包含金属高碱性磺酸盐清净剂的本发明的润滑油组合物。
摘要:
This invention relates to a method of reducing intake valve deposits in a direct injection engine, the method comprising lubricating the engine with a lubricating oil composition comprising a base oil mixture, the base oil mixture comprising (i) a Group III, a Group IV oil, or a mixture thereof, in combination with (ii) a synthetic ester oil, the weight ratio of (i) to (ii) being from about 0.2:1 to about 6:1.