acids, methods of making them, and compositions and processes employing themEP2270122A220 Ene 20095 Ene 2011Stepan CompanySulfonated estolides and other derivatives of fatty acids, methods of making them, and compositions and processes employing themEP2277860A122 Jul 200926 Ene 2011Stepan CompanyCompositions comprising sulfonated estolides and alkyl ester sulfonates, methods of making them, and co