Textiles: manufacturing
Patent
1975-07-09
1976-09-07
Moyer, Donald B.
Textiles: manufacturing
428323, 428307, B41M 522
Patent
active
039791416
ABSTRACT:
Disclosed are normally substantially colorless chromogenic 3'-amino-6' or 7'-(pyrazol-1-yl)fluoran color precursor compounds having the following generic structural formula: ##SPC1##
Wherein each R.sub.1 represents either a hydrogen atom or a lower alkyl group having from one to five carbon atoms; wherein each R.sub.2 represents either a hydrogen atom, a substituted or unsubstituted lower alkyl group having from one to five carbon atoms or a substituted or unsubstituted phenyl group; and wherein the pyrazolyl group is attached to the fluoran moiety at either the 6' position or the 7' position of the latter. These compounds are generally substantially colorless but capable of becoming highly colored when brought into reactive contact with many conventional Lewis acid materials. Accordingly, these compounds are highly useful as a component of pressure-sensitive copying papers.
REFERENCES:
patent: 3669711 (1972-06-01), Kimura et al.
patent: 3669712 (1972-06-01), Kimura et al.
patent: 3769057 (1973-10-01), Lin
patent: 3769062 (1973-10-01), Ishige et al.
patent: 3930672 (1976-01-01), Ozutsumi
patent: 3947471 (1976-03-01), Akamatsu et al.
Moore Business Forms Inc.
Moyer Donald B.
LandOfFree
Pressure-sensitive recording system comprising 3'-amino-6' or 7' does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pressure-sensitive recording system comprising 3'-amino-6' or 7', we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pressure-sensitive recording system comprising 3'-amino-6' or 7' will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2170233