Fluoran compound

Details Fluoran compound Fluoran compound

1989-07-10

1991-08-20

Raymond, Richard L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D49310

Patent

active

050415603

ABSTRACT:
A novel fluoran compound represented by the formula (I): ##STR1## is disclosed. By using the novel fluoran compound (I) as a chromogenic substance, a pressure-sensitive record material is provided which can develop an image of a clear vermilion color when it contacts a developer of an acidic substance.

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