申请人:EXXON CHEMICAL PATENTS INC.
公开号:EP0323086A2
公开(公告)日:1989-07-05
A magnesium phenate is prepared by a process which comprises reacting (1) magnesium oxide, magnesium hydroxide, magnesium carbonate, magnesium bicarbonate or a magnesium carboxylate with (2) a phenol, a methylene bis-phenol or a sulphurised phenol in the presence of (3) a solvent comprising an organic compound containing one or more alcoholic hydroxyl groups e.g. an alkoxy alcohol and (4) a promoter selected from a ketone, diketone such as α or β diketone, aldehyde or carboxylic acid and (5) optionally a diluent oil. This magnesium phenate may be used as a detergent for a lubricating oil.
苯酸镁的制备工艺包括:(1) 氧化镁、氢氧化镁、碳酸镁、碳酸氢镁或羧酸镁与(2) 苯酚、亚甲基双酚或硫化苯酚在(3) 溶剂存在下反应,该溶剂包括含有一个或多个醇羟基的有机化合物,例如烷氧基醇和(4) 促进剂,促进剂选自酮、二酮如α或β二酮、醛或羧酸。(4) 一种促进剂,选自酮、二酮如 α 或 β 二酮、醛或羧酸,以及 (5) 可选的稀释剂油。这种苯酸镁可用作润滑油的洗涤剂。