Bayer Aktiengesellschaft

Friedrich Wilhelm Kroeck

Rutger Neeff

Volker Hederich

Guenter Gehrke

Anthraquinone dyestuffs of the formula ##SPC1## In which X.sub.1 denotes hydroxyl or amino, X.sub.2 denotes hydroxyl, amino, alkylamino, cycloalkylamino, arylamino, acylamino, alkylmercapto or arylmercapto, R denotes hydrogen, alkyl, aralkyl, cycloalkyl or aryl, Z denotes alkylene, Ac denotes acyl and Y denotes hydrogen or halogen, and in which the ring A can optionally by substituted by halogen, as well as their preparation and use for the dyeing of synthetic fibre materials. The dyed materials show good fastness to light and sublimation

Growing community of inventors

Opladen, Germany

Friedrich Wilhelm Kroeck