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Succinimide phosphoric acid esters as multipurpose additives
Author(s) -
Naga H. H. Abou El,
Mohamed M. M.,
El Meneir M. F.
Publication year - 1994
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010060405
Subject(s) - succinimides , succinimide , chemistry , phosphorus pentoxide , organic chemistry , dispersant , phosphoric acid , maleic anhydride , alcohol , antistatic agent , maleic acid , polymer , dispersion (optics) , physics , layer (electronics) , optics , copolymer
Succinimide phosphoric acid esters have been synthesised and evaluated as antioxidants and ashless dispersant additives for crankcase lubricating oils. The synthesis is based on reacting succinimides (as prepared by the reaction of polyisobutylene, maleic anhydride and tetraethylene pentamine) with phosphorus pentoxide in the presence of alcohols with different carbon numbers Results showed that the magnitude of the oils' oxidation stability, as well as their dispersive power, are both highly related to the chemical structure of the alcohol used.