Patent ID: 6630132
Filing Date: 2003-10-07
Classification: A61K,A61Q,C08G

Abstract:
A UV-light-absorbing quaternary polysiloxane of general formula (I) in which the radicalsR1 are identical or different and are in each case lower alkyl radicals having 1 to 4 carbon atoms or phenyl radicals, R2 is R1 or a radical of formula (Ia) R2=-M-Z+ Aâˆ’â€ƒâ€ƒ(Ia) â€ƒwith the proviso that, in the average molecule, at least one radical R2 is a radical of the formula -M-Z+ Aâˆ’, â€ƒin which Z is a radical of formula (Ib) R3, R4 are alkyl radicals having 1 to 22 carbon atoms or alkenyl radicals having 2 to 22 carbon atoms, in which the alkyl or alkenyl radicals can include hydroxyl groups, R5 is a monovalent chromophore radical responsible for UV-absorption of formula (Ic) â€ƒin which R6 is R7 is â€”CH&boxH;CHâ€”, R8 are identical or different and in each case are hydrogen, alkyl, haloalkyl, halogen, phenyl, hydroxyl, alkoxy, amino, alkylamino, dialkylamino, di(hydroxyalkyl)amino or di(polyalkoxy)amino radicals, m=0 or 1, n=0 or 1, o=0 to 5, x=0 to 6, M is a divalent hydrocarbon radical having at least 4 carbon atoms which has one hydroxyl group and which may be interrupted by one or more oxygen atoms, where the N atom of the radical Z is bonded to the radical M via the carbon atom adjacent to the Câ€”OH group in the radical M, Aâˆ’ is an inorganic or organic anion which stems from a customary physiologically compatible acid HA, a, independently, has a value from 1 to 200, and b has a value from 0 to 10.