4-Hydroxyalkyl-substituted 3-pyrazolidinone electron transfer ag

Details 4-Hydroxyalkyl-substituted 3-pyrazolidinone electron transfer ag 4-Hydroxyalkyl-substituted 3-pyrazolidinone electron transfer ag

1983-08-04

1984-09-11

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430440, 430483, 430543, 430559, G03C 554, G03C 142, G03C 530, G03C 700

Patent

active

044710453

ABSTRACT:
Photographic elements, film units, processes and alkaline processing compositions are described wherein certain 4-hydroxyalkyl-substituted 3-pyrazolidinones are employed as electron transfer agents in black-and-white and color image transfer materials. The silver halide electron transfer agents or precursors thereof have the following formula: ##STR1## wherein: n is 1 or 2;

REFERENCES:
patent: 3221023 (1965-11-01), De Marle et al.
patent: 3247201 (1966-04-01), De Marle et al.
patent: 3453109 (1969-07-01), Lee
patent: 4076529 (1978-02-01), Fleckenstein et al.
patent: 4209580 (1980-06-01), McCreary et al.
Research Disclosure, vol. 161, Sep., 1977, Item, 16139, p. 26.

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