Inventor
KOHLHAAS FOLKER
DE4 patents
Patents
4 patentsUS4492654AJan 8, 1985
Water-soluble azo compounds, a process for their preparation and their use as dyes
HOECHST AG18 citations72
US4992589AFeb 12, 1991
Substituted phenyl hydroxyethyl sulfones, and process for their preparation
HOECHST AG11 citations71
US4906738AMar 6, 1990
Water-soluble phenyl- or naphthyl-azo-carboxypyrazolone compounds, containing a fiber-reactive group with a chloratriazinyl moiety and a group of the vinylsulfone series in the pyrazolone coupling component, suitable as dyestuffs
HOECHST AG3 citations60
US4778911AOct 18, 1988
Process for preparation of 3-(acyl)amino-4-alkoxy-phenyl-β-hydroxyethyl-sulfone (sulfonates)
HOECHST AG0 citations50