Laundry detergent bar containing linear alkyl benzene sulfonate

Abstract From the Canadian patent

Laundry detergent bars are formulated with linear alkyl benzene sulfonate and detergent builders. The process comprises the steps of: (a) supplying substantially anhydrous linear alkyl benzene sulfonic acid the linear alkyl chain of which contains from about 8 to about 20 carbon atoms; (b) neutralizing the aforementioned sulfonic acid with a subtantially anhydrous granular base selected from the group consisting of alkali metal carbonates, alkali metal bicarbonates and mixtures thereof to form alkali metal linear alkyl benzene sulfonate; (c) blending detergent builder with the aforementioned sulfonate; and (d) preparing laundry detergent bars from the thus formed mixture of detergent …