Abstract: Dimethicone copolyol sulfosuccinate surfactant compounds having low-odor characteriztics are disclosed. The low-odor dimethicone copolyol sulfosuccinate is substantially free from propionaldehyde and acid-releasable precursors of propionaldehyde, thereby substantially eliminating the cosmetically undesirable odor characteriztic of conventional dimethicone copolyol sulfosuccinate surfactants. The low-odor dimethicone copolyol sulfosuccinates are suitable for use as surfactants in household or personal care products and applications.

Abstract: Dimethicone copolyol sulfosuccinate surfactant compounds having low-odor characteristics are disclosed. The low-odor dimethicone copolyol sulfosuccinate is substantially free from propionaldehyde and acid-releasable precursors of propionaldehyde, thereby substantially eliminating the cosmetically undesirable odor characteristic of conventional dimethicone copolyol sulfosuccinate surfactants. The low-odor dimethicone copolyol sulfosuccinates are suitable for use as surfactants in household or personal care products and applications.

Abstract: Improved liquid antimicrobial solutions useful as preservative additives to personal care preparations, particularly cosmetic formulations and the like, are provided which comprise 1,3-dimethylol-5,5-disubstituted hydantoin, liquid aromatic alcohol, and iodoalkynyl alkyl carbamate. A preferred antimicrobial solution can be prepared by producing the 1,3,dimethylol-5,5-disubstituted hydantoin in situ in the selected liquid aromatic alcohol and then adding to the resulting solution the previously prepared iodoalkynyl alkyl carbamate. The solutions are surprisingly water dispersible and display broad spectrum antimicrobial effectiveness, particularly antifungal effectiveness, at a relatively low usage concentration in a cosmetic medium.

Abstract: A method of preparing a formaldehyde substituted hydantoin in the form of a liquid antimicrobial preservative solution is disclosed. The inventive solution prepared by the disclosed method comprises a condensation product of a 5,5-disubstituted hydantoin and formaldehyde prepared in the presence of an antimicrobial liquid phenylic or benzylic alcohol. The inventive solution inhibits or retards microbial growth when an effective microbial inhibiting amount is subsequently added to a medium capable of supporting undesirable microbial growth. Preferably the inventive solution contains 1,3-dimethylol-5,5-dimethyl hydantoin prepared in the presence of phenoxyethanol and including an effective antimicrobial amount of at least one paraben preservative prepared by an embodiment of the disclosed method.

Abstract: Fatty acid esters of hydroxyalkyl sulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The hot crude ester is then quenched by immersion in an excess of cooled liquid, in which the ester product is soluble but in which unreacted, excess fatty acids are insoluble. The resulting slurry is filtered to separate the relatively pure ester from the quenching liquid containing dissolved free fatty acid. Isopropanol is the preferred quenching liquid.