| abstract |
A compound of the formula: n wherein: n n, y, and z are each independently integers ranging from 1 to 100,000; n R 1 through R 6 , and R 8 are each independently H, C 1-6 alkyl, hydroxyalkyl, substituted or unsubstituted aminoalkyl; or R 4 and R 5 together form a substituted or unsubstituted heterocyclic 5 to 6 membered ring wherein the substituents are selected from C 1-6 alkyl, hydroxyalkyl, or aminoalkyl; n R 7 is H or SR 1 , or S—R 7 in the above formula together form an isothiouronium salt or Bunte salt; n X is a linking group; and n D is a chromophore that absorbs visible light; hair dye compositions containing the polymeric compound; and a method for dyeing hair. |