Hydratable concentrated surfactant compositions

Abstract

A hydratable concentrated surfactant composition comprising: a) from 30 to 50 wt % of anionic surfactant selected from sodium laureth ether sulphate, sodium pareth ether sulphate and mixtures thereof, by weight based on the total weight of the composition; b) from 4 to 12 wt %, of a co-surfactant, which is selected from a betaine, cocamide monoethanolamide and mixtures thereof, based on the total weight of the hydratable concentrated surfactant composition; c) from 0.2 to 3 wt %, by weight of the total composition, of sodium benzoate; d) an additional phase modifier selected from alkyl trimethyl ammonium compounds having an alkyl chain of C8-C22 carbon atoms and salts thereof; e) from 0.2 to 3 wt % of a viscosity modifier, by weight of the total composition, which is an inorganic electrolyte; f) from 10 to 60% by weight water by weight of the total composition; wherein the surfactants are in a lamellar phase; and wherein the hydratable concentrated surfactant composition has a pH of from 3 to 6; and wherein the hydratable concentrated surfactant composition has a viscosity of from 8,000 to 200,000 mPas-1 (cps), when measured at 30° C. on a Brookfield DV2T using a Spindle RV-05 at 20 rpm for 60 seconds on a Helipath stand; and wherein the weight ratio of a) the anionic surfactant to b) the co-surfactant is from 3:1 to 10:1. wherein the weight ratio of sodium benzoate (c) to total surfactant (a)+(b) is 1:5 to 1:75, preferably from 1:10 to 1:65, most preferably 1:15 to 1:50.

Dependencies are inferred from the claim text.