Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Method for producing aqueous solutions of cationic diarylmethane colorants and triarylmethane colorants
Process for preparing aqueous solutions of cationic di- and triarylmethane dyes by the aqueous dye solution, which contains organic solvents, being concentrated by nanofiltration and optionally diluted with water.
BASF Aktiengesellschaft
C C
C09B C09B
inventional inventional
Gunter-Rudolf Robert Thomas
Schröder Reinhardt Gessner