Preparation of polyalkylene-substituted succinic acylating agents

摘要

The preparation of polyalkene-substituted succinic acylating agents by reaction, in the presence of a dihalotriphenylphosphorane, of a polyalkene and a compound of formula in which X and X' are the same or different provided at least one of X and X' is such that the polyalkene substituted succinylating agent obtained can function as carboxylic acylating agent, leads to improved yield of desired product and a reduction in the formation of undesirable reaction by-products when compared with prior art catalysts.