Structured multi-phased personal care composition comprising branched anionic surfactants

Abstract

A multi-phase personal care composition is described that comprises a first visually distinct phase including a structured surfactant component and a second visually distinct phase. The structured surfactant component comprises at least one branched anionic surfactant and from 0 to 10% by weight of the first visually distinct phase, of sodium trideceth sulfate.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional application Ser. No. 60 / 670,785 filed on Apr. 13, 2005 and U.S. Provisional application Ser. No. 60 / 680,114 filed on May 12, 2005 and U.S. Provisional application Ser. No. 60 / 680,149 filed on May 12, 2005.FIELD OF THE INVENTION [0002] The present invention relates to a structured multi-phase personal care composition that comprises at least one branched anionic surfactant and from 0% to 10%, by weight of the first visually distinct phase, of sodium trideceth sulfate. BACKGROUND OF THE INVENTION [0003] Personal cleansing compositions that attempt to provide skin-conditioning benefits are known. Desirable personal cleansing compositions must meet a number of criteria. For example, in order to be acceptable to consumers, a multi-phase personal cleansing composition must exhibit good cleaning properties, must exhibit good lathering characteristics, must be mild to the skin (not cause d...

AI Technical Summary

Benefits of technology

[0008] The inventors believe that mixtures of branched and linear anionic surfactants can provide good mildness, structure, and higher flash lather volume than compositions that comprise sodium trideceth sulfate, as the only anionic surfactant. Sufficient mildness can be provided by the highly branched tridecanol-based anionic surfactant complemented by high flash lather volume from linear structured surfactant components. These properties can be accomplished in the same composition by blending sodium trideceth sulfate with surfactants having a higher proportion of linear surfactants than sodium trideceth sulfate or by selecting surfactant which naturally have less branching than sodium trideceth sulfate. A preferred surfactant component comprises a substantial level of mono-methyl branched surfactants leading to structure and stability of structure.

Problems solved by technology

Although these products provide both conditioning and cleansing benefits, it is often difficult to formulate a product that deposits sufficient amount of skin conditioning agents on skin during use.

However, this introduces another problem associated with these cleansing and conditioning products.

Raising the level of skin conditioning agent in order to achieve increased deposition negatively affects the compositions speed of lather generation, total lather volume, performance and stability.

Some surfactants used in personal cleansing compositions, such as, sodium trideceth sulfate and similarly homologous chemicals based on tridecanol, also may depress the speed of lather production, although such compositions provide relatively mild cleansing.

Moreover, sodium trideceth sulfate and similar homologues based on tridecanol, are relatively costly materials, as such, the compositions do not enjoy broad commercial use.