Novel (UV absorbing compounds and) photographic elements contain

Details Novel (UV absorbing compounds and) photographic elements contain Novel (UV absorbing compounds and) photographic elements contain

1978-04-14

1980-06-10

Welsh, John D.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

252300, 430573, 430607, G03C 184

Patent

active

RE0303038

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: 3652289 (1972-03-01), Brooker et al.
patent: 3702861 (1972-11-01), Howe
patent: 3718472 (1973-02-01), Oliver et al.
Brederick et al., Chemische Berichte, vol. 103, pp. 222-235 (1970).

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