Abstract: This invention is directed to a process for stabilizing halogenated polymers by the addition of effective amounts of at least one aromatic triazole. More particularly, the invention is directed to the addition of at least one aromatic triazole to halogenated polymers which contain zinc ions.

Abstract: An easy dispersing alkali blue type pigment product and a process for making the same is provided which retains the color strength per unit alkali blue present of a flushed color product, but which contains less oil phase than a flushed color and is a free-flowing powder. The pigment can be very easily dispersed in oleoresinous systems such as printing inks, paints, plastics and the like to develop an outstanding fineness of grind and substantially full color strength.The pigmentary product of this invention is free-flowing and contains at least about 50% by weight of alkali blue pigment solids, and preferably more, coprecipitated with at least one organic dispersant of the anionic class containing at least eight carbon atoms, said dispersant is soluble in aqueous alkaline solutions and precipitated therefrom upon acidification.

Abstract: Colored organic solid particles of potential value as pigments are partially milled to an extent less than that required to develop full pigmentary strength by size reduction and further conditioned concurrently with a flushing step. The organic pigment particles are transferred from an aqueous dispersion to an organic hydrophobic vehicle in the presence of an organic breaching agent. The resulting flushed pigmented vehicle has pigmentary strength at least equal to that obtained by fully conditioning the crude particles without the breaching treatment. The conditioned pigments need not be recovered as a dry powdered product. The process is valuable in the manufacture of flushed phthalocyanines, quinacridones, etc., with substantial improvement in equipment utilization in milling. The flushed pigmented vehicles are useful in manufacture of paints, varnishes, lacquers, inks, color concentrates, and formulations for mass coloration of plastics.