Furan containing azo dye developers

Details Furan containing azo dye developers Furan containing azo dye developers

1974-11-22

1977-03-29

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 3, 96 29D, 96 77, 96 99, G03C 700, G03C 140, G03C 176, G03C 110

Patent

active

040147002

ABSTRACT:
A yellow dye developer having improved photographic properties represented by the formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an acylamino group having 1 to 4 carbon atoms; Z represents an atomic group necessary for completing a furan ring or a benzofuran ring; Y represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms; Ar represents an aromatic ring; R.sub.1 represents a hydrogen atom, a halogen atom, an acyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 5 carbon atoms; R.sub.2 represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms with the R.sub.2 group being at the ortho-position to the azo group; m and n each is an integer of 1 to 4; and at least one of X, Z, Ar and R.sub.1 being bonded to a polyhydric phenol moiety directly or through an atom or a divalent group; and a photographic material containing the dye developer.

REFERENCES:
patent: 3134672 (1964-05-01), Blout et al.
patent: 3307947 (1967-03-01), Idelson et al.
patent: 3579334 (1971-05-01), Cieciuch et al.

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