SALTS OF LAKED MONOAZO COMPOUNDS

摘要

The present invention relates to monoazo compounds of formula (I) which are present in the form of mono-, di-, tri- or tetra-valent mixed salts of different cations, such as, for example, Ca<2+>, Na<+>, NH4<+>, NR4<+>, H<+>, Li<+>, K<+>, Mg<2+>,Ba<2+>,< >Sr<2+>,< >AI<3+>, Pb<2+>, Mn<2+>, Zn<2+>, Cr<2+>, Co<2><+>, Fe<2><+>, Fe<3+>, Zr<4+> and Cu<2><+>, R being C1-C6alkyl, in freely selected ratios, and to the calcium salt of the monoazo compound of formula (I) which has two crystal polymorph forms - a reddish yellow and a greenish yellow - having different properties, for example colour shade or high-temperature stability, to the preparation of such compounds and to their use in the mass-pigmenting of organic materials and in the production of wax transfer ribbons, toners or colour filters.