Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1988-03-09
1990-09-25
Hollrah, Glennon H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
546 24, 546177, 546271, C07D24900, C07D21526, C07D21364, C07F 906
Patent
active
049594800
ABSTRACT:
Novel pyrazoloazole couplers comprise an aryl or heterocyclic group having, in at least one of the ortho positions to the carbon atom (A) that is bonded to the pyrazoloazole nucleus, a substituent (B) that enables the pyrazoloazole coupler to form a magenta dye that has increased stability and has absorption controllably shifted, that is shifted hypsochromically relative to a dye formed from a similar coupler lacking substituent (B). These couplers are useful in photographic silver halide materials and processes.
REFERENCES:
patent: 4338393 (1982-06-01), Bailey et al.
patent: 4443536 (1984-04-01), Lestina
patent: 4540654 (1985-09-01), Sato et al.
patent: 4600688 (1986-07-01), Kawakatsu et al.
patent: 4607002 (1986-08-01), Nakayama et al.
patent: 4639415 (1987-01-01), Kaneko et al.
patent: 4684603 (1987-08-01), Nishijima et al.
patent: 4752561 (1988-06-01), Nishijima et al.
Research Disclosure No. 12443, Research Disclosure, vol. 124, 1974, Kenneth Mason Publications Ltd., Hampshire, England.
Research Disclosure No. 17643, Research Disclosure, vol. 176, 1978, Kenneth Mason Publications Ltd., Hampshire, England.
Bowne Arlyce T.
Clarke David
Milner Nigel E.
Normandin Sharon E.
Eastman Kodak Company
Hollrah Glennon H.
Knapp Richard E.
O'Sullivan Peter G.
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