Inventor
KROH ADOLF
DE15 patents
Patents
15 patentsUS5368641ANov 29, 1994
Modified 2,9-dimethylquinacridone pigments, process for their manufacture and a method for pigmenting or lacquer systems with these pigments
HOECHST AG33 citations92
US5137576AAug 11, 1992
Quinacridones having selectively adjusted triboelectric effects
HOECHST AG24 citations92
US4777105AOct 11, 1988
Magenta colorant for electrophotographic recording processes
HOECHST AG27 citations92
US4986852AJan 22, 1991
Pigments and use thereof
HOECHST AG31 citations90
US4758665AJul 19, 1988
Process for preparing high-hiding gamma-modification of unsubstituted linear transquinacridone
HOECHST AG11 citations73
US4405734ASep 20, 1983
Process for mass coloring thermoplastic plastics
HOECHST AG7 citations73
US4400515AAug 23, 1983
Quinacridone mixtures, process for their manufacture and their use as pigments
HOECHST AG13 citations73
US4732618AMar 22, 1988
Powdered pigments with improved rheological properties, processes for their preparation and their use with a content of at least 5% of unsubstituted quinacridone
HOECHST AG11 citations72
US4631330ADec 23, 1986
Addition compounds and process for their preparation
HOECHST AG14 citations72
US4217265AAug 12, 1980
Pigment preparations
HOECHST AG12 citations72
US5070159ADec 3, 1991
Addition compounds, a process for the preparation, and their use, based on epoxy novolac-fatty amine adducts
HOECHST AG11 citations70
US4212975AJul 15, 1980
Process for the manufacture of the gamma-crystal modification of linear trans-quinacridone
HOECHST AG5 citations62
US4118387AOct 3, 1978
Naphthalimide-4,5-dicarboxylic acids
HOECHST AG2 citations62
US4007192AFeb 8, 1977
Naphthalimide-4,5-dicarboxylic acids
HOECHST AG5 citations62
US3931186AJan 6, 1976
Process for preparing naphtholyene arylimidazol-peri-dicarboxylic acid imides
HOECHST AG4 citations62