Silver halide photographic material comprising a polyoxyethylenic compound and a sensitizing dye

DETAILED DESCRIPTION OF THE INVENTION The addition of the spectral sensitizing dye can be made during, at the beginning of, or prior to chemical ripening, or between completion of chemical ripening and before coating of the silver halide emulsion.
Specifically, the spectral sensitizing dye can be added before, during, or after the addition of the silver salt solution, or by the beginning of or during chemical ripening in the process of forming the silver halide emulsion grains.
In addition, the spectral sensitizing dye can be added between completion of chemical ripening and before coating of the silver halide emulsion.
In this case, the temperature of the emulsion may be the same as that at chemical ripening, or may be higher or lower than that at chemical ripening.
Further, the addition of the sensitizing dye may be made during changing of the temperature.
In particular, the temperature of the emulsion is preferably between 45.
degree.
C.
and 70.
degree.
C.
In case of that silver halide grains are chemically sensitized in the presence of the water-soluble sensitizing dye, the sensitizing dye is preferably added during the formation of the silver halide grains, or after the formation of the silver halide grains and prior to chemical ripening, or during chemical ripening.
Alternatively, in case of that the water-soluble sensitizing dye is added to a chemically sensitized silver halide emulsion, the addition is preferably made prior to its coagulation by cooling.
As suitable sensitizing dyes there may be used any water-soluble sensitizing dye having a solubility of 0.
2 g or more, preferably 0.
5 g or more, in 100 ml of water at a temperature of 20.
degree.
C.
Examples of such sensitizing dyes include cyanine dyes, merocyanine dyes, hemicyanine dyes, rhodacyanine dyes, oxonol dyes, hemioxonol dyes, and other methine dyes or styryl dyes.
Preferred among these dyes are cyanine dyes.
In particular, cyanine dyes having the general formula (I) are useful.
##STR1## wherein R.
sub.
1 represents an alkyl group; R