Alkyl substituted photographic couplers and photographic element

Details Alkyl substituted photographic couplers and photographic element Alkyl substituted photographic couplers and photographic element

1990-10-25

1992-02-25

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430226, 430543, 430548, 430533, 430555, 430 55, G03C 732, G03C 734, G03C 736, G03C 738

Patent

active

050912917

ABSTRACT:
A coupler having as a coupling-off group an alkyl group substituted with an electron source capable of stabilizing carbonium ion.

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patent: 4028106 (1977-06-01), Hori et al.
patent: 4477560 (1984-10-01), Koitabashi et al.
patent: 4777123 (1988-10-01), Yamada et al.

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