VERFAHREN ZUR HERSTELLUNG VON PHTHALOCYANINEN
    21.
    发明授权
    VERFAHREN ZUR HERSTELLUNG VON PHTHALOCYANINEN 有权
    用于生产酞菁

    公开(公告)号:EP1706411B1

    公开(公告)日:2010-02-24

    申请号:EP04804410.1

    申请日:2004-12-30

    Applicant: BASF SE

    CPC classification number: C07D487/22

    Abstract: A method is disclosed for preparing metal-free phthalocyanines having the formula (I) by reaction of an ortho-phthalodinitrile of formula (Ia) in an inert solvent having a boiling temperature of at least 120 °C (under normal pressure) in the presence of ammonia. In formulae I and Ia, the variable n can take the value of 1, 2, 3 or 4 and the radicals R denote a five- or six-membered saturated, nitrogen-containing heterocyclic ring that is optionally substituted by one or two C1-C8 alkyl groups, the heterocyclic ring being bonded to the benzene ring by a nitrogen atom in the ring; the heterocyclic ring may further contain one or two additional nitrogen atoms or an additional oxygen or sulphur atom. The method is characterised in that the reaction is performed in the presence of an alkaline metal hydroxide or alkaline metal carbonate.

Patent Agency Ranking