Triarylmethane color formers

Details Triarylmethane color formers Triarylmethane color formers

1992-09-08

1993-08-03

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546229, 5482664, 5482672, 5483411, 5483415, 552104, C07D23362, C07D23361, C07D24908

Patent

active

052330486

ABSTRACT:
Color formers of the general formula ##STR1## in which --independently of one another-- R.sup.1 and R.sup.2 are hydrogen, halogen, alkyl, aralkyl etc.,

REFERENCES:
patent: 3897438 (1975-07-01), Draber et al.
patent: 4897223 (1990-01-01), Eckstein et al.

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