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AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorsBeng Sim Chuah, Kevin Ronald Franklin, Gordon Charles Hough
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Translucent anhydrous formulations containing particulate commercially available activated aluminium chlorohydrate (AACH) have a perceptible yellowness. The yellowness of translucent anhydrous compositions containing AACH can be ameliorated or eliminated whilst retaining the improved antiperspirant efficacy of AACH by controlling its water content to the range of 9 to 18%. The appearance of yellow formulations in or on a dispensing package, prior to application to the body, can appear to be neutralised to the human eye by employing a dispenser having a complementary colour in wall contacting the formulation, to promote achromicity. The complementary colour of the wall is dark green for yellow formulations.
1 An anhydrous antiperspirant or deodorant composition comprising particulate activated aluminium chlorohydrate (AACH), and a water-immiscible carrier fluid in which the AACH is suspended characterised in that the formulation is translucent and the AACH has a water content in the range of from 9 to 18% by weight.
2 A composition according to claim 1 characterised in that the AACH has a water content of at least 10% and preferably at least 12% by weight.
3 A composition according to claim 1 characterised in that the AACH has a water content of not more than 17% by weight.
4 A composition according to claim 1 characterised in that the AACH has a Δb value of below 1.5.
A composition according to claim 4 characterised in that the AACH has a Δb value of below 1.0.
6 A composition according to claim 4 characterised in that the AACH has a Δb value of below 0.5.
7 A composition according to any preceding claim characterised in that the AACH has a Band III content of greater than 30%.
8 A composition according to claim 6 characterised in that the AACH has a Band III content of greater than 40%.
9 A composition according to any preceding claim characterised in that the AACH employed therein has been made by halting the drying of an aqueous solution thereof at its selected water content.
10 A composition according to any of claims 1 to 9 characterised in that the AACH employed therein has been made by increasing the water content of an AACH feedstock having a water content of below 10% by weight.
11 An anhydrous antiperspirant or deodorant composition comprising particulate AACH, and a water-immiscible carrier fluid in which the AACH is suspended characterised in that the formulation is translucent and the AACH has a Δb value of below 2 and a Band III content of greater than 40%.
12 A composition according to any preceding claim characterised in that the AACH employed therein has been milled.
13 A composition according to any preceding claim characterised in that it contains from 1 to 35% by weight of the AACH, and preferably from 20 to 30% by weight.
14 A composition according to any preceding claim characterised in that the carrier liquid comprises one or more hydrophobic liquids selected from the group consisting of non-volatile and/or volatile silicones, liquid aliphatic hydrocarbons and/or liquid aliphatic esters, liquid aromatic esters, liquid branched aliphatic alcohols and liquid aliphatic ethers of a fatty alcohol or a polyglycol.
15 A composition according to claim 14 characterised in that the carrier liquid further comprises one or more non-volatile liquids selected from non-volatile silicone oils and non-volatile aromatic esters.
16 A composition according to claim 14 or 15 characterised in that the proportion of carrier liquid is from 20 to 99% by weight, and preferably from 30 to 80% by weight.
17 A composition according to any preceding claim characterised in that it contains additionally a thickener and/or structurant.
18 A composition according to claim 17 characterised in that the thickener or structurant is present in a proportion selected in the range of from 0.2 to 35% by weight, and preferably from 5 to 25%.
19 A composition according to claim 18 characterised in that the thickener or structurant is present in an amount of from 10 to 45% by weight of the liquid carrier.
20 A composition according to any of claims 17 to 19 characterised in that the thickener is a polysaccharide or hydrolysate thereof.
21 A composition according to claim 20 characterised in that the thickener is a dextrin ester.
22 A composition according to any of claims 17 to 21 characterised in that
23 A composition according to any of claims 17 to 19 characterised in that the structurant is selected from the group consisting of waxes, fibre-forming structurants and polymeric structurants.
24 A composition according to any one of claims 17 to 23 characterised in that the formulation is in the form of a soft solid.
25 A composition according to claim 24 characterised in that the formulation is opaque in bulk and translucent after being dispensed through a narrow slit.
26 An antiperspirant or deodorant product comprising a dispenser containing a composition according to any preceding claim.
27 A product according to claim 26 characterized in that the dispenser has a wall in contact with the composition stored therein having a colour complementary to that of the composition.
28 A product according to claim 27 characterized in that the composition is a soft solid, cream, gel or lotion.
29 A product according to claim 27 or 28 in which the composition has a yellow colour and the dispenser wall is green.
Dependencies are inferred from the claim text.