Fluoran compounds and marking systems

Details Fluoran compounds and marking systems Fluoran compounds and marking systems

1986-02-24

1987-01-27

Bond, Robert T.

Recorders

Record receiver deforming

546 15, 544 70, C07D52100, C09D 1102

Patent

active

046397507

ABSTRACT:
2- And/or 6-pyridylethylamino-substituted fluorans useful as color formers, particularly in pressure-sensitive carbonless duplicating systems and thermal-responsive marking systems are prepared by the interaction of (pyridylethylaminophenyl)carbonylbenzoic acids with 4-hydroxy- or alkoxyanilines or by the interaction of (disubstituted aminophenyl)carbonylbenzoic acids with N-pyridylethyl-4-hydroxy- or alkoxyacetanilides. The (pyridylethylaminophenyl)carbonylbenzoic acid intermediates required for the fluorans are prepared by interacting a N-pyridylethyl-3-hydroxyaniline with a substituted or unsubstituted phthalic anhydride. The N-pyridylethyl-4-hydroxy- or alkoxyanilines and the N-pyridylethyl-3-hydroxyanilines are prepared by interacting the respective aniline with a vinylpyridine.

REFERENCES:
patent: 3901918 (1975-08-01), Koga et al.

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-860882