Pyrrylfluoran compounds

Details Pyrrylfluoran compounds Pyrrylfluoran compounds

1975-04-29

1976-11-02

Gallagher, R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260335, 428306, 428307, 428323, 428325, 428327, 282 275, C07D40514

Patent

active

039897168

ABSTRACT:
This invention discloses novel pyrrylfluoran compounds useful as the color-precursors or imaging sources in pressure-sensitive copy papers and in thermally-sensitive imaging papers, and a process for preparing these compounds which involves reacting under mild acid catalysis a mixture containing equimolar parts of a 2-amino-6-dialkylaminofluoran and a diketone taken from the group consisting of acetonylacetone, 2,5-heptanedione and 3,6-octanedione.

REFERENCES:
patent: 3501331 (1970-03-01), Kimura et al.
patent: 3514310 (1970-05-01), Kimura et al.
patent: 3764369 (1973-10-01), Hoover et al.
patent: 3837906 (1974-09-01), Jones
patent: 3930672 (1976-01-01), Ozutsumi et al.
patent: 3936564 (1976-02-01), Miyazawa et al.
Hollins, The Synthesis of Nitrogen Ring Compounds, (1924), pp. 28-29.

Affiliated with

Also associated with

Rating

Pyrrylfluoran compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pyrrylfluoran compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pyrrylfluoran compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1159111