Photographic silver halide material containing a coupler having

Details Photographic silver halide material containing a coupler having Photographic silver halide material containing a coupler having

1992-12-07

1994-06-07

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430385, 430387, 430389, 430543, 430553, 430555, 430557, 430558, 430955, G03C 146

Patent

active

053188845

ABSTRACT:
Photographic silver halide materials and processes employ at least one coupler having a coupling-off group which includes a carbocyclic or heterocyclic ring which bears a silyl substituent on at least one of its ring carbon atoms and is attached via another of its ring atoms either directly or through a linking group or atom to the coupling position of the coupler. The silyl substituent bears three groups which are independently aromatic groups, heterocyclic groups, aliphatic groups or additional silyl groups bonded through a linking atom to the silicon atom in said silyl substituent.

REFERENCES:
patent: 3935015 (1976-01-01), Arai et al.
patent: 4483918 (1984-11-01), Sakai et al.
patent: 4853319 (1989-08-01), Krishnamurthy et al.
patent: 4973545 (1990-11-01), Moore

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