US 2007/0178053 A1Published application

Antiperspirant compositions

AssigneeConopco, Inc., d/b/a UNILEVER

InventorsKevin Ronald Franklin, Anne-Cecile Marie Eugenie Irvoas

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Abstract

Antiperspirant water in oil emulsions can suffer from inferior sensory properties, including wetness and/or slow “dry-down” and/or stickiness, even when the composition contains a polyhydric humectant, a known class of skin moisturiser. A balance of sensory properties can be achieved by formation of a base composition in the form of a water in oil emulsion in which the oil phase, preferably comprising 20 to 55% of the base composition, contains at least threshold proportions of both a volatile silicone and a sensory modifying oil, particularly selected from dicaprylyl ether and dicaprylyl carbonate, the sensory modifying oil advantageously being present in a weight ratio to the polyhydric humectant of from 3:4 to 4:1. Such compositions are particularly suitable for mixture with a liquifiable propellant to form aerosol compositions.

Claims33

Dependent claims

An antiperspirant base composition in the form of a liquid emulsion comprising a continuous oil phase, a dispersed aqueous phase and an emulsifier, which is suitable for combining with a propellant to form an aerosol composition, said aqueous phase representing from 45 to 80% by weight of the base composition and comprising from 20 to 50% based on said aqueous phase of a water-soluble astringent antiperspirant active salt, and from 2 to 20% of a polyhydric humectant, based on the base composition

said oil phase representing from 20 to 55% based on the base composition and comprising a volatile silicone oil in an proportion of at least 25% of the oil phase and a sensory modifying oil selected from dialkyl ethers and dialkyl carbonates having a boiling point of at least 280° C. in an proportion of at least 20% of the oil phase and preferably in a weight ratio to the polyhydric humectant of from 3:4 to 4:1,
and said emulsifier being present in an amount of at least 0.15% of the base composition all % s being by weight.

Dependencies are inferred from the claim text.