Patent ID: 6448213
Filing Date: 2002-09-10
Classification: C11D

Abstract:
Cleaning compositions comprising surfactant systems which comprise:(a) from 80% to 99%, by weight of an anionic cosurfactant mixture of mid-chain branched primary alkyl sulfates and linear alkyl benzene sulfonates, wherein said mixture comprises: (i) from 35% to 80%, by weight of this anionic cosurfactant mixture, of mid-chain branched primary alkyl sulfates having the formula: â€ƒwherein the total number of carbon atoms in the branched primary alkyl moiety of this formula, including the R, R1, and R2 branching, is from 14 to 20, and wherein further for this surfactant mixture the average total number of carbon atoms in the branched primary alkyl moieties having the above formula is within the range of greater than 14.5 to 18, R, R1, and R2 are each independently selected from hydrogen and C1-C3 alkyl, provided R, R1, and R2 are not all hydrogen and, when z is 1, at least R or R1 is not hydrogen; M is one or more cations; w is an integer from 0 to 13; x is an integer from 0 to 13; y is an integer from 0 to 13; z is an integer of at least 1; and w+x+y+z is from 8 to 14; and (ii) from 20% to 65%, by weight of this anionic cosurfactant mixture, of C10-C16 linear alkyl benzene sulfonate; and (b) from 1% to 20%, by weight of one or more cationic cosurfactants.