Pyridine color formers

Details Pyridine color formers Pyridine color formers

1981-03-16

1982-12-14

Hess, Bruce H.

Textiles: manufacturing

427151, 4283204, 4283206, 4283208, 428488, 428537, 428913, 428914, 546329, B41M 516, B41M 518, B41M 522

Patent

active

043635032

ABSTRACT:
Novel 4-aryl-or heteroaryl-2,6-bis[(substituted-amino)phenyl]pyridines which are useful as color formers in pressure-sensitive carbonless duplicating systems and thermal marking systems are prepared by reacting a 2-, 3- or 4-R.sub.1 R.sub.2 N-acetophenone with an aryl or heteroaryl aldehyde in the present of ammonia or an ammonia-releasing agent.

REFERENCES:
patent: 3985376 (1976-10-01), Baumann et al.
R. L. Frank et al., J. Amer. Chem. Soc. 71, 2629-2635 (1949).
M. Weiss, J. Amer. Chem. Soc. 74, 200-202 (1952).
E. Koenigs et al., Ann. 509, 142-158 (1934).
H. Gilman et al., J. Org. Chem. 22, 1169-1171 (1957).

Affiliated with

Also associated with

Rating

Pyridine color formers does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1199140