摘要 |
<p>Emulsion contains 0.01-0.5 g. sensitiser dye of formula (I): (where R1 and R5 each is lower alkyl; R2 and R3 each is H or lower alkoxy; R6 and R7 each is H, Cl, Br, lower alkyl or alkoxy; R4 and R8 are each lower opt. substd. alkyl; Y is S or Se and p is 1 for a betaine-like molecular structure, caused through presence of one -SO3H in R4 or R8, and 2 for a non-betaine-like molecular structure) together with 0.005-0.1 g. styryl base of formula (II): (where A are atoms needed to complete a heterocyclic ring and R9 and R10 each is lower alkyl), w.r.t.</p> |