Use of charged surfactants for reducing textile staining by antiperspirants
AssigneeBeiersdorf AG
InventorsMichael Urban, Heike Miertsch, Stefan Biel, Sabine Kuehne, Stefan Bruening, Rolf Kawa
Life of this patent
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Abstract
The invention comprises the use of one or more charged surfactants in preparations having an antiperspirant effect for reducing staining in or on clothing and improving improvement the ability of stains to be washed out of the clothing.
Claims21
-23. (canceled)
A cosmetic or dermatological preparation, wherein the preparation comprises (i) one or more antiperspirant substances and (ii) one or more charged surfactants, a weight ratio (i):(ii) being from 1:1 to 30:1.
A method of reducing or avoiding staining in or on clothing by a cosmetic or dermatological preparation comprising one or more antiperspirant substances, wherein the method comprises including in the preparation one or more charged surfactants.
A method of improving the ability of stains in or on clothing caused at least in part by a cosmetic or dermatological preparation comprising one or more antiperspirant substances to be washed out from the clothing, wherein the method comprises including in the preparation one or more charged surfactants.
A method of gauging stains on or in clothing caused at least in part by a cosmetic or dermatological preparation comprising antiperspirant substances, wherein the method comprises
- (i) successively applying to the same location of the clothing (a) from 10 mg/cm2 to 50 mg/cm2 of the preparation, (b) optionally, from 5 mg/cm2 to 40 mg/cm2 of human sweat, and (c) from 2 mg/cm2 to 15 mg/cm2 of sebum,
- (ii) optionally, storing the clothing at 38° C. and 80% relative humidity for preferably at least 12 hours,
- (iii) washing the clothing,
- (iv) optionally, rinsing the clothing with cold tap water,
- (v) drying the clothing at room temperature, and
- (vi) subjecting the dried clothing to a photometrical measurement by means of colorimetric measures in a CIE L*a*b color space and comparing an obtained value to a value obtained with an untreated area of the clothing.
Dependencies are inferred from the claim text.