Use of 2-pyrrolidinone derivatives as solvents for...

Details Use of 2-pyrrolidinone derivatives as solvents for... Use of 2-pyrrolidinone derivatives as solvents for...

G - Physics

03

C

96/130

G03C 7/388 (2006.01)

Patent

CA 1114221

ABSTRACT OF THE DISCLOSURE The disclosure describes a method for the addition of oil-soluble photographic addenda to a hydrophilic colloidal solution for forming a layer of a light-sensitive silver halide photographic material. The method comprises dissolving the addenda with a high-boiling organic solvent and thereafter dispersing, into the hydrophilic colloidal solution, the addenda dissolved in the high-boiling organic solvent. According to the invention the high boiling organic solvent is represented by the following general formula: Image wherein R represents an alkyl group or alkenyl having 6 to 22 carbon atoms, R1, R2 and R3 individually represent hydrogen, an alkyl group having 1 to 4 carbon atoms, an alkoxy carbonyl group or an acyloxy group having 1 to 10 carbon atoms. This enables to obtain good color development of the coupler even if the light-sensitive silver halide photographic material is treated at high temperature and with rapid processing.

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