3-aminoallylidenemalononitrile UV-absorbing compounds and photog

Details 3-aminoallylidenemalononitrile UV-absorbing compounds and photog 3-aminoallylidenemalononitrile UV-absorbing compounds and photog

1986-07-02

1990-08-07

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430507, 430627, 430628, 430631, 430931, G03C 184

Patent

active

049467689

ABSTRACT:
3-Aminoallylidenemalononitrile compounds corresponding to the formula: ##STR1## wherein R.sub.1 is a short alkyl chain having 1 to 3 carbon atoms and R is a substituted or unsubstituted long alkyl chain greater than 10 carbon atoms, are useful in photography for absorbing ultraviolet radiations in the range from 360 to 400 nm, with no undesired absorption near 420 nm, when introduced in a photographic gelatin layer.

REFERENCES:
patent: 4045229 (1977-03-01), Weber et al.
patent: 4195999 (1980-04-01), Adachi et al.
patent: 4307184 (1981-12-01), Beretta et al.
patent: 4443534 (1984-04-01), Kojima et al.
patent: 4464462 (1984-08-01), Sugimoto et al.
patent: 4576908 (1986-03-01), Vallarino et al.

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