Silver halide emulsion containing an arylphosphonium salt as ant

Details Silver halide emulsion containing an arylphosphonium salt as ant Silver halide emulsion containing an arylphosphonium salt as ant

1974-05-24

1976-04-20

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Plural diverse electric fields

96 87R, 96109, G03C 134

Patent

active

039516610

ABSTRACT:
Substances of the structure ##EQU1## wherein Z is phosphorus, X.sup.-is Cl.sup.-, Br.sup.-, ClO.sub.2 .sup.- or BF.sub.4 .sup.-, and R.sub.1 - R.sub.4 are alkyl or aromatic groups are excellent inhibitors of fog formation when incorporated in photographic emulsions containing silver halides.

REFERENCES:
patent: 2238632 (1941-04-01), Dersch et al.
patent: 3615510 (1971-10-01), Yudelson

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