Photographic system and novel compounds

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...

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430428, 430455, 430566, 544243, 544310, 544311, 544312, G03C 554, G03C 538

Patent

active

047133139

ABSTRACT:
Compounds which include a quaternary group connected to a pyrimidine residue through a linkage are disclosed. These compounds are useful as silver halide solvents in photographic products, processes and compositions.

REFERENCES:
patent: 2857274 (1958-10-01), Land et al.
patent: 2857276 (1958-10-01), Land et al.
patent: 3709690 (1973-01-01), Cohen et al.
patent: 4056666 (1977-11-01), Seita et al.
patent: 4126459 (1978-11-01), Greenwald
patent: 4298675 (1981-11-01), Taylor
patent: 4350754 (1982-09-01), Bartels-Keith et al.

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