Novel UV absorbing compounds and photographic elements containin

Details Novel UV absorbing compounds and photographic elements containin Novel UV absorbing compounds and photographic elements containin

1975-12-18

1977-08-30

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

252300, 350 1, G03C 184

Patent

active

040452298

ABSTRACT:
1-Amino-4-cyano-1,3-butadiene compounds of the formula ##STR1## WHEREIN N IS 1 OR 2, WHEN N IS 1 R.sub.1 and R.sub.2 can be the same or different and represent hydrogen, alkyl including substituted alkyl, aryl including substituted aryl or cyclic alkyl groups, except that both R.sub.1 and R.sub.2 cannot be hydrogen, or taken together R.sub.1 and R.sub.2 represent the elements necessary to complete a cyclic amino group and when n is 2 at least one of R.sub.1 and R.sub.2 is alkylene or arylene; G represents an electron withdrawing group. The compounds are especially useful in photographic elements as UV absorbers.

REFERENCES:
patent: 3052636 (1962-09-01), Strobel
patent: 3125597 (1964-03-01), Wahl et al.
patent: 3702861 (1972-11-01), Howe
Bredereck et al., Chem. Ber. 103, pp. 222-235, (1970).

Affiliated with

Also associated with

Rating

Novel UV absorbing compounds and photographic elements containin does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-960190