Various other water-insoluble or sparingly soluble par ticulate materials such as sunscreens, fabric brighteners, 55 and whiteners have been employed in detergent composi tions and depend for their activity on particle deposition and retention on washed surfaces.
Preferred antibacterial agents employed herein are salts If the molecular weight of the cationic polymers em- 50 of 2-pyridinethiol-1-oxide which has the following struc- tural formula in tautomeric form, the sulfur being at- ployed herein is less than about 2,000, no substantial en- hancement of particle deposition occurs.
Detergent compositions in accordance with this inven tion can be prepared by methods well known in the art; 15 however, as hereinbefore indicated, it has been found that especially good results are obtained when the cationic polymer and particulate substances are uniformly admixed in an initial step, with the mixture then being added to an aqueous solution or slurry of the surfactant.
degree of deposition and retention 75 of these compounds in the presence of the cationic poly- 3,580,853 mer is found to be substantially greater than is attached with the control compositions, and a corresponding in crease in residual antimicrobial activity is observed on surfaces washed therewith.
For example, perfumes which have been 70 adsorbed on insoluble particulate resinous substances can be deposited on skin, fabrics and other surfaces washed with detergent compositions containing same to a substan tially greater degree, through the inclusion in said com- positions of a cationic polymer as herein defined.