Process for synthesizing thiacyanine dyes

Details Process for synthesizing thiacyanine dyes Process for synthesizing thiacyanine dyes

1979-05-07

1980-09-30

Demers, Arthur P.

Harness for working animal

548152, C07D41706

Patent

active

042257050

ABSTRACT:
There is described a process for synthesizing a thiacyanine dye wherein a 2-halo, 2-alkoxy or 2-aryloxybenzothiazole is alkylated by a strong alkylating agent to form a quaternized benzothiazole which, without being isolated, is condensed with a benzothiazolium betaine in a nonaqueous homogeneous medium. The thiacyanine dye is useful for enhancing the photosensitivity of a blue-sensitive silver halide emulsion.

REFERENCES:
patent: 3149105 (1964-09-01), Larive et al.
patent: 4028353 (1977-06-01), Borror
Hamer, The Cyanine Dyes and Related Compounds, Interscience, N.Y., N.Y., 1964, pp. 46, 47, 58, 59.

Affiliated with

Also associated with

Rating

Process for synthesizing thiacyanine dyes does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1170459