Patent ID: 8124570
Filing Date: 2012-02-28
Classification: C09K

Abstract:
1. A viscoelastic fluid, comprising: one or more cationic surfactants, wherein the one or more cationic surfactants is selected from the group consisting of methylpolyoxyethylene cocoalkylammonium chloride, isotridecyloxypropyl polyoxyethylene methyl ammonium chloride, polyoxyethylene cocoalkylamines, polyoxyethylene tallowalkylamines, and polyoxyethylene oleylamines; one or more anionic surfactants having alkyl chains of about 6 to about 18 carbon atoms with at least one negatively charged moiety; one or more zwitterionic surfactants and/or one or more amphoteric surfactants; and water; wherein the one or more cationic surfactants is selected from the group consisting of wherein R wherein X is a counter-anion;