Patent ID: 9732268
Date: 2017-08-15
CPC Classifications: C09K

Claim:
1. A viscoelastic fluid, comprising: one or more cationic surfactants; 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 methylpolyoxyethylene (2-12) cocoalkylammonium chloride, isotridecyloxypropyl polyoxyethylene (2-12) methyl ammonium chloride, and combinations thereof; and wherein the one or more amphoteric surfactants has the following structural formula: wherein, R