C.I.PV19 6276 SuperFast Violet 05B

PV19, 6276 SuperFast Violet 05B  Benzimidazolone-dioxazine pigments identified for commercialization thus far are red-violet to reddish-blue in shade. They are characterized by an exceptionally high tinting strength, and their heat stability and resistance to aggressive solvents and plasticizers is much superior to that of carbazole dioxazine pigments. Test results conducted thus far suggest that benzimidazolone-dioxazine pigments should be suitable for almost all applications for the highest performance requirements expected of a high-performance organic pigment.

The GAMA-crystal modification of P.V.19 affords bluish red shades which are much yellower than those obtained by the 􀀂-modification. Commercial types of GAMA-P.V.19 show a wide range of particle size distributions. The specific surface areas vary accordingly, they range from approximately 30 to 70 m2/g.
The particle size of gama-P.V.19 has more of an effect on the light fastness and weatherfastness of the resulting pigmented system than can be said of the 􀀂-modification.
The grades of gama-P.V.19 with finer particle sizes, although less lightfast and weatherfast, have the advantage of being more transparent, tinctorially stronger,
and bluer than varieties with coarser particle sizes.