Gas separation: apparatus – Chromatography type apparatus – Having imbedded baffle or flow distributor
Patent
1976-12-21
1978-12-26
Louie, Jr., Won H.
Gas separation: apparatus
Chromatography type apparatus
Having imbedded baffle or flow distributor
96108, 96109, G03C 128, G03C 134
Patent
active
041314700
ABSTRACT:
A process for the stabilization of and the prevention or substantial reduction of fogging in the use of photographic silver halide emulsions, characterized in that compounds selected from the group consisting of those represented by the general formulas I, II, and III: ##STR1## are added to the emulsion, before or during chemical sensitization and before coating of the emulsions onto a support therefor, wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as herein described.
REFERENCES:
patent: 3311474 (1967-03-01), Willems et al.
patent: 3365294 (1968-01-01), VON Konig
patent: 3824103 (1974-07-01), Pierce et al.
Chem. Abs., vol. 86, 1977, 49316x.
Fischer Gunther
Franz Udo
Gahler Siegfried
Junge Karl-Wilhelm
Morgenstern Johannes
Louie, Jr. Won H.
VEB Filmfabrik Wolfen
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