56.
    发明专利
    失效

    公开(公告)号:JPH0430393B2

    公开(公告)日:1992-05-21

    申请号:JP23774683

    申请日:1983-12-16

    摘要: Dihydro-benzotriazine compounds of formula … … wherein R is H, alkyl, alkoxy or aryl, R1 is H, alkyl, -CF3, -COOH, -NH2, NHSO2R2 or -OR2, and R2 is alkyl, any alkyl or alkoxy groups preferably having from 1 to 6 carbon atoms, are of use as photographic silver halide developing agents in acid environment as well as in basic environment. Novel dihydro-benzotriazine compounds and photographic processes products and compositions utilising the developing agents are described.