PROCESS FOR PREPARING AN ALKYL ARYL SULPHONATE CONCENTRATE COMPOSITION

摘要

PROCESS FOR PREPARING AN ALKYL ARYL SULPHONATE CONCENTRATE COMPOSITION The invention relates to alkyl aryl sulphonate concentrate compositions and provides a process wherein an aqueous solution containing at least 10% w/w of a neutralising agent is mixed with at least one C2-9 saturated alcohol and the resulting mixture is used to neutralise a C8-18 alkyl aryl (xylene or toluene) sulphonic acid, relative quantities being such that the resulting neutralised mixture contains 5 to 40 parts by weight of the at least one alcohol per 100 parts by weight of alkyl aryl sulphonate salt. The resulting flowable liquid concentrate compositions are easily handled materials having application in enhanced oil recovery processes.