申请人:Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
公开号:EP0190947A2
公开(公告)日:1986-08-13
A process for producing azo pigments which are toned comprises coupling an aromatic diazonium compound with 3-hydroxy-2-naphthoic acid and at least one bis-naphthyl- methane, and optionally, laking the resulting pigment.
生产调色偶氮颜料的工艺包括:将芳香族重氮化合物与 3-羟基-2-萘酸和至少一种双萘甲烷偶联,然后将得到的颜料浸泡。