3-aminoallylidenemalononitrile uv-absorbing compounds and...

Details 3-aminoallylidenemalononitrile uv-absorbing compounds and... 3-aminoallylidenemalononitrile uv-absorbing compounds and...

G - Physics

03

C

96/110, 260/560.

G03C 1/06 (2006.01) G03C 1/815 (2006.01)

Patent

CA 1261349

3-Aminoallylidenemalononitrile UV-Absorbing Compounds And Photoqraphic Elements Containing Them ABSTRACT OF DISCLOSURE 3-Aminoallylidenemalononitrile compounds correspond- ing to the formula: Image wherein R1 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 radia- tions in the range from 360 to 400 nm, with no undesired absorption near 420 nm, when introduced in a photographic gelatin layer.

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