| abstract |
Process for the preparation of keratin fibermakers with liquid, gel-like or cream-like consistency. The aim of the invention is to reduce unwanted Farbumschlaege and eun Verbassen the gefaerbten Keratinfasern and herabzusetsen the Toxizitaet the Farbepraeparate. This is accomplished by incorporating into a base a developing agent of general formula (I) wherein X is O or S; Y is OR deep 1 or NR deep 2R deep 3 in ring position 2 or 4; Z is OR deep 1, NR deep 2R deep 3, H , Halogen or alkyl, R is low, R is low, R deep3 is alkyl, aryl, aminoalkyl or hydroxyalkal, because alkyl is C1 to C4, u.a as a coupler in the meta position OH or NH deep 2-substituted phenylureas or phenylthioureas incorporated The amounts of developer and coupler are each 0.01 to 5 wt.%. The dye rates have high fastness and greatly reduced TOxizitaet. |