Sughrue Mion, PLLC
Method for forming azo colorant using diazo compound and coupler having leaving group and recording material using the coupler
The present invention provides a method for forming an azo colorant by reaction of a diazo compound and a coupler. The coupler has a leaving group at the coupling position thereof, such that a coupling reaction rate is faster than it would be if the coupler did not have the leaving group. The coupling reaction rate constant k is preferably 0.1 (s−1) or more.
Fuji Photo Film Co., Ltd.
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Hisao Mitsuyuki Kazunori
Yamada Tsurumi Nigorikawa