Michael adduct amino esters as total base number boosters for marine diesel engine lubricating compositions
申请人:The Lubrizol Corporation
公开号:US10577556B2
公开(公告)日:2020-03-03
A lubricating composition suited to use in a marine diesel engine includes an oil of lubricating viscosity and an amino carboxylate compound of formula (I): NR1R2—((CHR3)xNR4)n—(CHR5)2—COY, where R1 and R2 are independently selected from —(CHR6)2—COY′, H, and C1C3 alkyl and wherein at least one of R1 and R2 is —(CHR6)2—COY′; or wherein NR1R2 is a cyclic structure; Y and Y′ are independently selected from —OR7, NHR7, and —N(R7)2; each R7 is independently selected from C6-C12 alkyl and C6-C12 alkenyl; R3, R5 and R6 are independently selected from H and C1-C4 alkyl; R4 is selected from H, C1-C4 alkyl, and (CHR3)xNH2; x is from 2 to 4; and n is at least 1, except where NR1R2 is a cyclic structure, where n is at least 0.
一种适用于船用柴油发动机的润滑组合物包括具有润滑粘度的机油和式 (I) 的氨基羧酸化合物:NR1R2-((CHR3)xNR4)n-(CHR5)2-COY,其中 R1 和 R2 独立选自-(CHR6)2-COY′、H 和 C1C3 烷基,且 R1 和 R2 中至少有一个是-(CHR6)2-COY′;或其中 NR1R2 是环状结构;Y 和 Y′独立选自-OR7、NHR7 和-N(R7)2;每个 R7 独立选自 C6-C12 烷基和 C6-C12 烯基;R3、R5 和 R6 独立选自 H 和 C1-C4 烷基;R4 选自 H、C1-C4 烷基和 (CHR3)xNH2;x 为 2 至 4;n 至少为 1,除非 NR1R2 为环状结构,其中 n 至少为 0。