SUCCINIMIDE COMPOUND, PROCESS FOR PRODUCING THE SAME, LUBRICATING OIL ADDITIVE, AND LUBRICATING OIL COMPOSITION FOR INTERNAL COMBUSTION ENGINE
申请人:Idemitsu Kosan Co., Ltd.
公开号:EP1086960A1
公开(公告)日:2001-03-28
Provided are novel succinimide compounds obtained by reacting a polyamine having a carbon/nitrogen weight ratio of from 0.85 to 1.25 with a succinic acid compound in a molar ratio to the polyamine of up to 1.40; a process for producing them; a lubricating oil additive containing the compound; and a lubricating oil composition for internal combustion engines which comprises a lube base oil, (a) at least one compound selected from the group consisting of overbased sulfonates, phenates and salicylates with alkaline earth metals, and (b) the succinimide compound, and which has a total base number of from 30 to 150 mg-KOH/g. The composition is for use in internal combustion engines that may discharge a large amount of sulfur oxides (SOx), having the advantage of good corrosion resistance against SOx to be discharged in large quantities.
本发明提供了新型琥珀酰亚胺化合物,该化合物通过使碳/氮重量比为 0.85 至 1.25 的多胺与摩尔比最高为 1.40;一种生产工艺;一种含有该化合物的润滑油添加剂;以及一种用于内燃机的润滑油组合物,该组合物包括润滑油基础油,(a)至少一种选自碱土金属过基磺酸盐、苯酸盐和水杨酸盐组成的组的化合物,以及(b)琥珀酰亚胺化合物,其总碱基数为30至150毫克-KOH/克。该组合物用于可能排放大量硫氧化物(SOx)的内燃机,其优点是对大量排放的 SOx 具有良好的耐腐蚀性。