Direct positive dyes made from 3-indolizine carboxaldehyde

Details Direct positive dyes made from 3-indolizine carboxaldehyde Direct positive dyes made from 3-indolizine carboxaldehyde

1985-04-02

1986-09-30

Berch, Mark L.

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

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

548159, 548181, 548453, 430596, G03C 1733, C07D51900, C07D48704

Patent

active

046148019

ABSTRACT:
A new group of cyanine and merocyanine spectral sensitizing dyes based on derivatives of 3-indolizine carboxaldehyde is particularly useful in sensitizing a direct positive silver halide emulsion to orange and red.

REFERENCES:
patent: 2405106 (1946-07-01), Widmer et al.
patent: 2409612 (1946-10-01), Brooker et al.
patent: 2511222 (1950-06-01), Sprague et al.
patent: 2571775 (1951-10-01), Sprague
patent: 2622082 (1952-12-01), Sprague
patent: 2666761 (1954-01-01), Heseltine et al.
patent: 2706193 (1955-04-01), Sprague
patent: 3260601 (1966-07-01), Bailey
patent: 3483196 (1969-12-01), Jenkins et al.
patent: 3650758 (1972-03-01), Gilman, Jr.
patent: 3925085 (1975-12-01), Sato et al.
patent: 3941602 (1976-03-01), Depoorter et al.
patent: 4355098 (1982-10-01), Wheeler
Stepanov et al, Chem. Abs. 60, 695 (1963).
Borrows, Holland & Kenyon, "The Chemistry of the Pyrrolines. Part I. 2-Methyl- and 2-Phenyl-pyrrocoline" J. Chemical Soc., 1946, pp. 1069-1075.

Affiliated with

Also associated with

Rating

Direct positive dyes made from 3-indolizine carboxaldehyde does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Direct positive dyes made from 3-indolizine carboxaldehyde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct positive dyes made from 3-indolizine carboxaldehyde will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-985511