Patent ID: 7354459

Claim:
A method for the direct dyeing of keratin fibers, comprising applying to the keratin fibers a dye composition comprising at least one organosilane compound chosen from compounds of formula (I): in which: A is a group having a direct dyeing function, L is a linking arm, R 1 , R 2 , and R 3 , independently of each other, are chosen from hydrogen; mono- and polyhydroxyalkyl radicals comprising from 1 to 10 carbon atoms; mono- and polyaminoalkyl radicals comprising from 1 to 10 carbon atoms; mono- and polyhaloalkyl radicals comprising from 1 to 10 carbon atoms; mono- and polyalkoxyalkyl radicals, wherein the alkoxy radicals are chosen from C 1 -C 10 alkoxy radicals and the alkyl radicals are chosen from C 1 -C 10 alkyl radicals; C 6 -C 18 aryl radicals; C 6 -C 18 mono- and polyaminoaryl radicals; C 6 -C 18 mono- and polyhydroxyaryl radicals; mono- and polyalkoxyaryl radicals, wherein the alkoxy radical is chosen from C 1 -C 10 alkoxy radicals and the aryl radical is chosen from C 6 -C 18 aryl radicals; alkylaryl radicals, wherein the alkyl radical is chosen from C 1 -C 10 alkyl radicals and the aryl radical is chosen from C 6 -C 18 aryl radicals; arylalkyl radicals, wherein the alkyl radical is chosen from C 1 -C 10 alkyl radicals and the aryl radical is chosen from C 6 -C 18 aryl radicals; carboxyalkyl and sulphoalkyl radicals, wherein the alkyl radical is chosen from C 1 -C 10 alkyl radicals; and n is an integer ranging from 1 to 10.