Patent ID: 8293698

Claim:
A detergent mixture of alkyl aryl sulfonates of alkaline earth metals comprising: a) 50 to 90% by weight of a mono C 14 to C 40 linear alkyl substituted tolyl or xylyl sulfonate, wherein from 15 to 30 mole % of the tolyl or xylyl ring is attached on positions 1 or 2 of the linear alkyl chain; and b) 10 to 50% by weight of a heavy alkyl benzene sulfonate derived from alkylation of benzene with C 10 to C 14 linear olefins, wherein the heavy alkyl benzene sulfonate is selected from: i) dialkyl benzene sulfonate, ii) monoalkyl benzene sulfonate, wherein the alkyl substituent is derived from the dimerization of the linear olefin, and iii) mixtures of i) and ii), wherein the base No. BN of said mixture as measured according to Standard ASTM-D-2896 is from 3 to 60.