Metal compounds of calixarenes, detergent compositions containing them and use thereof in lubricant compositions
申请人:Eni S.p.A.
公开号:US10807939B2
公开(公告)日:2020-10-20
The present invention relates to a metal compound of calixarene not containing sulfur and dispersible in oil, which can be partially salified, or neutral, or basic or overbased, said calixarene having general formula (I) in which: a) R1, R2, R3 and R4 are independently selected from hydrogen, or a group containing carbon and hydrogen, or a group containing in addition to carbon and hydrogen also heteroatoms, provided that said heteroatoms are not sulfur; b) one of the two substituents R5 and R6 is hydrogen, while the other may be selected from hydrogen, or a linear or branched alkyl with a number of carbon atoms between 1 and 6, preferably methyl, ethyl, 1-propyl, 2-propyl, n-butyl, sec-butyl, more preferably methyl or ethyl; c) n is the number of units of the calixarene ring and is comprised in the range between 4 and 16, preferably between 5 and 12; said calixarene being characterized in that in at least one of the n units of the calixarene ring, at least one of the substituents R1, R2, R3 and R4 contains at least one acid group of carboxylic type available for the reaction with a metal base, with the proviso that said acid group of carboxylic type is not contained in a unit of the calixarene ring derived from salicylic acid.
本发明涉及一种不含硫且可在油中分散的钙烯类金属化合物,该化合物可部分盐化,或中性,或碱性或过碱性,所述钙烯类金属化合物具有通式(I),其中:a) R1、R2、R3 和 R4 分别独立地选自氢、或含有碳和氢的基团、或除碳和氢外还含有杂原子的基团,但所述杂原子不得为硫; b) 两个取代基 R5 和 R6 中的一个为氢,另一个可选自氢、或碳原子数在 1 至 6 之间的直链或支链烷基,优选甲基、乙基、1-丙基、2-丙基、正丁基、仲丁基,更优选甲基或乙基;c) n 是萼片炔环的单元数,范围在 4 至 16 之间,最好在 5 至 12 之间;所述萼片炔的特征在于,在萼片炔环的 n 个单元中,至少有一个单元的取代基 R1、R2、R3 和 R4 含有至少一个可与金属碱反应的羧酸型酸基,但所述羧酸型酸基不包含在由水杨酸衍生的萼片炔环的单元中。