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

1984-03-19

1984-11-06

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Nonradiation sensitive image processing compositions or...

Developer

548364, 548367, G03C 530, C07D40300, C07D23100

Patent

active

044812876

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), DeMarle et al.
patent: 3247201 (1966-04-01), DeMarle 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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