| 摘要 |
<p>Disclosed is an antihalation dye and a photographic element containing such dye of the formula: <CHEM> wherein X<1>, X<2> independently represents -CR<8>R<9>-, -S-, -Se-, -NR<1><0>, -CH=CH- or -O-; n is an integer of 2 or 3; R<1> and R<2> independently represent alkyl of 1 to 10 carbons or substituted alkyl of 1 to 10 carbons; R<3> represents a ring chosen from the set consisting of aryl, substituted aryl, and a heterocyclic ring containing 5 or 6 carbons in the ring with the proviso that when R<3> is aryl or substituted aryl, n must be 2. R<4>, R<5>, R<6> and R<7> independently represent hydrogen, alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons, R<4> and R<5> taken together or R<6> and R<7> taken together may represent the atoms necessary to form a 5 or 6-membered aliphatic ring, an aromatic six-membered ring, an aromatic 10-membered ring, a substituted aromatic six-member ring or a substituted aromatic 10-member ring; R<8>, R<9> independently represent alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons, aryl of 6-10 carbons, substituted aryl of 6-10 carbons; R<1><0> represents an alkyl of 1-10 carbons, substituted alkyl of 1-10 carbons, aryl of 6-10 carbons, substituted aryl of 6-10 carbons; Q represents a counterion.</p> |
