Inventor
HOYER ERNST
18 patents
Patents
18 patentsUS4485041ANov 27, 1984
Water-soluble metal free or copper triazino-bis-[hydroxy-naphthylamino]-disazo dyestuffs containing fiber reactive groups, and a process for dyeing or printing cellulose fibers
HOECHST AG33 citations92
US4622390ANov 11, 1986
Water-soluble disazo compounds containing an amino naphthol-disulfonic acid moiety as a coupling component and fibre-reactive groups
HOECHST AG30 citations90
US4323497AApr 6, 1982
Water-soluble disazo dyestuffs
HOECHST AG22 citations81
US4939243AJul 3, 1990
Water-soluble copper complex disazo compounds containg a chloro triazinylamino group and a group of the vinylsulfone series as fiber-reactive groups and their dyestuffs
HOECHST AG10 citations73
US4730038AMar 8, 1988
Water-soluble disazo compounds of 1-amino-8-naphthal-3,6- or 4,6-disulfonic acid as bivalent coupling component, containing fiber-reactive groups suitable as dyestuffs
HOECHST AG14 citations73
US4378312AMar 29, 1983
Water-soluble azo dyestuffs
HOECHST AG14 citations73
US4370145AJan 25, 1983
Copper formazan compounds, processes for their preparation and their use as dyestuffs
HOECHST AG11 citations73
US4336190AJun 22, 1982
Copper complex formazan compounds, process for their manufacture and their use as dyestuffs
HOECHST AG16 citations73
US4334076AJun 8, 1982
Process for the preparation of sulfuric acid semiester ethylsulfonyl compounds of aminophenols, aminobenzanilides or phenylpyrazolones by esterification with sulfuric acid and/or sulfur trioxide in a kneader
HOECHST AG7 citations73
US4492654AJan 8, 1985
Water-soluble azo compounds, a process for their preparation and their use as dyes
HOECHST AG18 citations72
US4315865AFeb 16, 1982
Process for the production of sulfuric acid semiester compounds by sulfation in a machine employing kneading action
HOECHST AG10 citations72
US4242258ADec 30, 1980
Water-soluble dyestuffs, processes for their manufacture, their use as fiber-reactive dyestuffs for dyeing and printing fiber materials and the fiber materials dyed with these dyestuffs
HOECHST AG14 citations72
US4035351AJul 12, 1977
Water-soluble monoazo dyestuff containing a phenylene diazo component
HOECHST AG7 citations72
US3957751AMay 18, 1976
Water-soluble reactive dyestuffs of the monoazo series containing an active methylene coupling component
HOECHST AG9 citations66
US4916215AApr 10, 1990
Water-soluble disazo compounds containing substituted triazinyl radical, pyrazole-type groups, and a plurality of fiber-reactive sulfone-containing groups, suitable as dyestuffs
HOECHST AG4 citations61
US4191703AMar 4, 1980
Process for the manufacture of sulfuric acid semi-ester compounds
HOECHST AG2 citations61
US4002606AJan 11, 1977
Water-soluble phenyl-azo-naphthyl compounds
HOECHST AG3 citations61
US4293306AOct 6, 1981
Process for the dyeing and printing of hydrophobic synthetic organic fiber materials with water-insoluble azo dyestuffs
HOECHST AG1 citations51