Heat stabilized silver chloride photographic emulsions containing phosphine compounds.

摘要

A silver halide photographic element comprising a silver halide emulsion which is greater than 50 mole % silver chloride, said emulsion being in reactive association with a sulfur donating compound and a phosphine compound represented by Formulae I and II, and polymers having a repeating unit derived from the compounds of Formula I, Formula (I) R<1><8>R<1><9>R<2><0>P Formula (II) R<2><1>R<2><2>P-A-PR<2><3>R<2><4> wherein R<1><8>, R<1><9>, R<2><0>, R<2><1>, R<2><2>, R<2><3>, and R<2><4> are independently substituted or unsubstituted alkyl, or aryl groups, or R<1><8>, R<1><9>, R<2><0>, R<2><1>, R<2><2>, R<2><3>, and R<2><4> may combine to form a 5 or 6-membered ring , and wherein A is a divalent carbon linking group, and a method of making the silver chloride emulsion.