| 摘要 |
<p>The present invention concerns a novel composition for developing silver halide photographic products having improved stability in air. The composition comprises at least an oxidisable metallic ion capable of reducing silver ions, ethylenediamine tetracetic acid and at least an additional complexing agent of formula (I): <CHEM> wherein R<1> and R<2> are each idependently a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, a hydroxyl group, a hydroxyalkyl group, R<3> is a radical selected from -COOM in which M is hydrogen or a counter-ion, -CONR<4>R<5> in which R<4> and R<5> are each independently a hydrogen atom, an alkyl group, of 1 to 10 carbon atoms, n, p and q are 1, 2 or 3. This novel inorganic developing composition is more ecological and has improved resistance to oxidation in air.</p> |
