Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1987-12-15
1989-11-07
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430621, 430627, 430639, 430640, G03C 130
Patent
active
048792098
ABSTRACT:
The present invention provides a method of hardening a proteinaceous layer of a photographic silver halide element by incorporating a modified dextran in said proteinaceous layer, said modified dextran being the reaction product of dextran and an alkyl haloformate, a substituted alkyl haloformate, an aryl haloformate, or a substituted aryl haloformate. The invention also provides a photographic element comprising a said reaction product in at least one proteinaceous silver halide emulsion layer and/or in another proteinaceous layer coated thereon.
REFERENCES:
patent: 3058827 (1962-10-01), Graham
patent: 3382077 (1968-05-01), Himmelmann et al.
patent: 3441412 (1969-04-01), Himmelmann et al.
patent: 3533800 (1970-10-01), King et al.
patent: 4323644 (1982-04-01), Nakamura et al.
Chem. Abs. 102:132391n, "Water-Insoluble Dextrans by Grafting", Makromol, Chem., 1985.
Timmerman Daniel
Vandenabeele Hubert
Vermeersch Joan T.
Vervecken Jacques L.
Agfa-Gevaert N.V.
Breiner A. W.
Buscher Mark R.
Michl Paul R.
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