Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Triarylmethane dyes
Described is a triarylmethane dye of the formula I where R1 and R2 are independently methyl, ethyl or hydroxyethyl, Q is substituted or unsubstituited phenyl or naphthyl and A⊖ is the equivalent of an anion. It does not detach carcinogenic Michler's ketone.
BASF Aktiengesellschaft
C Y C C
C09D Y10S C09D C09B
inventional additional inventional inventional
Rainer Hellmut Thomas
Tresch Kast Gessner