Patent ID: 6488915
Filing Date: 2002-12-03
Classification: A61K,A61P,A61Q

Abstract:
A method for protecting human epidermis or human hair from UV radiation further comprising applying an effective amount of a sunscreen combination, further comprising aA) compound absorbing essentially in the UV-A region and B) further compounds absorbing in the UV-A region, in the UV-B region and over both regions, â€ƒwhere the constituent absorbing in the UV-A region consists of A) effective amounts of at least one of the compounds of the formula I â€ƒin which the substituents R1 to R3, independently of one another, are C1-C8-alkyl â€ƒand the constituent B) comprises effective amounts of one or more compounds chosen from the group consisting of Ba) hydroxybenzophenones of the formula II â€ƒin which the substituents, independently of one another, have the following meanings: R4 and R5 are hydrogen, C1-C12-alkyl, C3-C10-cycloalkyl, where the substituents R4 and R5 may, together with the nitrogen atom to which they are bonded, form a 5- or 6-membered ring and R6 hydrogen, C1-C12-alkyl, C3-C10-cycloalkyl; Bb) diarylbutadienes of the formula III â€ƒin which the substituents R7 and R8, independently of one another, may be hydrogen, C1-C12-alkyl or C3-C10-cycloalkyl, Bc) the compound of the formula IV Bd) the compound of the formula V Be) the compound of the formula VI Bf) the compound of the formula VII Bg) an organosiloxane benzalmalonate of the formula VIIIa â€ƒin which V1â€² is the group V1 is a methyl group or V1â€², or of the formula VIIIb â€ƒin which V2â€² is the group of the structure V2 is a methyl group or V2â€²or mixtures of compounds of the formulae VIIIa and VIIIb, where t is a value up to 100 and u is a value up to 20, with the proviso that u=0 when V1=V1â€² and/or V2=V2â€², and u is a value from 1 to 20 when V1=CH3 and/or V2=CH3, Bh) the compound of the formula IX Bi) the compound of the formula X Bj) the compound of the formula XI â€ƒin which X is hydrogen, sodium, potassium, ammonium or triethanolammonium, Bk) the compound of the formula XII and optionally further compounds which absorb in the UV region and which are known per se for cosmetic and pharmaceutical preparations.