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US 8,574,559 B2Granted
Low-residue deodorant or antiperspirant stick based on an oil-in-water dispersion/emulsion
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsBernhard Banowski, Armin Wadle, Marcus Claas
Life of this patent
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Abstract
Deodorant or antiperspirant sticks based on an oil-in-water dispersion/emulsion for application on the skin.
Claims18
A deodorant or antiperspirant stick composition comprising:
- a) 4%-20% of at least one lipid or wax component with a melting point >50° C., which is not to be apportioned to components b) or c),
- b) 0.5%-10% of at least one nonionic oil-in-water emulsifier with an HLB value of more than 7 within an oil-in-water emulsifier mixture with an average HLB value in the range of 10-19,
- c) 1%-4% of at least one nonionic water-in-oil emulsifier with an HLB value of more than 1.0 and up to 7.0, chosen from the mono- and di-esters of ethylene glycol and the mono -,di-,tri- and tetra esters of pentaerythritol with linear saturated and unsaturated fatty acids with 12-30 carbon atoms, which can be hydroxylated, as well as mixtures thereof, as consistency providers and/or water binders,
- d) 3%-20% of at least one oil, liquid at 20° C., which represents neither a scent component nor an essential oil, whereby the average solubility parameter of the totality of the contained oils differs in the presence of linear saturated fatty alcohols with a chain length of at least 8 carbon atoms by a maximum of −0.7 (cal/cm3)0.5or a maximum of +0.7 (cal/ cm3)0.5and in the presence of water-in-oil emulsifiers, which are different from linear saturated fatty alcohols with a chain length of at least 8 carbon atoms, linear saturated fatty alcohols with a chain length of at least 8 carbon atoms being absent, by a maximum of −0.4 (cal/ cm3)0.5or a maximum of +0.7 (cal/ cm3)0.5from the average solubility parameter of the water-in-oil emulsifier(s), wherein the composition contains no silicon oils and/or hydrocarbons,
- e) at least one water-soluble polyhydric C2-C9-alkanol with 2-6hydroxyl groups and/or at least one water-soluble polyethylene glycol with 3-20 ethylene oxide units,
- f) 5% up to less than 50% by weight of water, and
- g) at least one deodorant or antiperspirant active substance, wherein the composition is an oil-in-water dispersion/emulsion in the form of a stick, all weight percentages based on total weight of the composition unless indicated otherwise.
4 more elements
Dependencies are inferred from the claim text.