Abstract: The invention relates to alkyl aryl sulfonate concentrate compositions and provides a process wherein an aqueous solution containing at least 10% by weight of a neutralizing agent is mixed with at least one C.sub.2-9 saturated alcohol and with a C.sub.8-18 alkyl aryl (xylene or toluene) sulfonic acid, the relative quantities of the components being such that the resulting neutralized mixture contains 5 to 40 parts by weight of the alcohol per 100 parts by weight of alkyl aryl sulfonate salt. The resulting flowable liquid concentrate composition are easily handled materials having application, for instance, in enhanced oil recovery processes.

Abstract: An aqueous organic sulfonate surfactant system containing an alkylpolyalkoxyphenylethersulfonate cosurfactant has a salt tolerance comparable to one containing NEODOL.RTM. 25-3S and has greater heat stability.

Abstract: Lithium metal-terminated polymers of one or more conjugated dienes and of one or more monoalkenyl arenes are coupled by reaction with a coupling agent of the general formula ##STR1## where the R groups are optionally substituted hydrocarbyl groups, R.sub.1 is hydrogen, R or OR, and R.sub.2 is an optionally substituted alkylene group which may contain one or more oxygen atoms.