Chromogenic fluoran derivatives

Details Chromogenic fluoran derivatives Chromogenic fluoran derivatives

1983-06-14

1987-06-30

Schwartz, Richard A.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

544 70, C07D49310

Patent

active

046772030

ABSTRACT:
Certain 3-piperidino fluoran derivatives useful as color recording materials are disclosed.

REFERENCES:
patent: 3627787 (1971-12-01), Lin
patent: 3649649 (1972-03-01), Orita et al.
patent: 3901918 (1975-08-01), Koga et al.

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