申请人:Folly Gregoire
公开号:US20070226920A1
公开(公告)日:2007-10-04
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
+
, NH
4
+
, NR
4
+
, H
+
, Li
+
, K
+
, Mg
2+
, Ba
2+
, Sr
2+
, AI
2+
, Pb
2+
, Mn
2+
, Zn
2+
, Cr
2+
, Co
2+
, Fe
2+
, Fe
3+
, Zr
4+
and CU
2+
, R being C
2
-C
6
alkyl, 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.