Xanthene compounds

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

548207, C07D51310

Patent

active

043070175

ABSTRACT:
The present invention is concerned with novel xanthene compounds of the formulae ##STR1## and ##STR2## wherein each R.sup.1 the same or different is alkyl or benzyl; each R.sup.2 the same or different is an electron-withdrawing group having a positive sigma value greater than 0.6; R.sup.3 is hydrogen or alkyl; R.sup.4 is alkyl; and n is 0 or 1, said R.sup.2 group being ortho, meta or para to said N atom. The subject compounds are useful as light-screening dyes in photographic products and processes.

REFERENCES:
patent: 4231929 (1980-11-01), Bloom et al.
Muller, Methoden der Organischen Chemie, Georg. Thieme Verlag Stuttgart, 1970, p. 78.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

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

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

Rate now

     

Profile ID: LFUS-PAI-O-2367110

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.