Bis ureido compositions

Details Bis ureido compositions Bis ureido compositions

1993-09-09

1995-01-10

Robinson, Allen J.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

430264, 430598, 430599, 430602, 564 60, G03C 106, C07C27510

Patent

active

053809424

ABSTRACT:
Novel compounds have been discovered that are particularly effective as nucleation accelerators or boosters when employed with hydrazide nucleators 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 dialkylaminoalkyl, alike or different.

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patent: 5104769 (1992-04-01), Looker et al.
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