Process for the manufacture of beta-phthalocyanines in a dispersible form
    9.
    发明授权
    Process for the manufacture of beta-phthalocyanines in a dispersible form 失效
    以可分散形式制造β-酞菁的方法

    公开(公告)号:US2686010A

    公开(公告)日:1954-08-10

    申请号:US24701651

    申请日:1951-09-17

    申请人: CIBA LTD

    发明人: WALTER WETTSTEIN

    IPC分类号: C09B67/00

    CPC分类号: C09B67/0032

    摘要: Phthalocyanines which are metal-free or derived from a metal having an atomic weight less than 65 are ground in the crude form with anhydrous sodium ferrocyanide or anhydrous barium chloride at p 100-150 DEG C in absence of any organic liquid; the substratum being then removed with water. Examples describe (1) the grinding of crude copper phthalocyanine with anhydrous sodium ferrocyanide, and (2) the grinding of metal-free crude phthalocyanine with anhydrous barium chloride. Nickel, cobalt, and iron phthalocyanines are also referred to.