Bis ureido compositions

Details Bis ureido compositions Bis ureido compositions

C - Chemistry, Metallurgy

07

C

C07C 275/14 (2006.01) C07C 275/10 (2006.01) G03C 1/06 (2006.01)

Patent

CA 2131613

ABSTRACT Novel compounds have been discovered that are particularly effective as nucleation accelerators or boosters when employed with hydrazide nucleator in the formulation of silver halide emulsions for lithographic film. The novel compounds contain bis ureido groups joined by an alkyleneoxy moiety or recurring alkyleneoxy moieties. The 2-nitrogen of each ureido group can carry groups comprising hydrogen, aryl, alkyl or dialkylamino- alkyl, alike or different.

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