DYEING PREPARATIONS, WHICH ARE SOLUBLE IN COLD WATER, OF ANIONIC DYESTUFFS

1470930 Water-soluble anionic dyestuff compositions BAYER AG 7 Oct 1975 [18 Oct 1974] 41009/75 Heading D1B Solid dyestuff preparations which are soluble as defined in cold water comprise a guanadinium salt as defined of an anionic dyestuff of particle size at most 10 microns and a surface active agent, preferably non-ionic or anionic. The dyestuff preparations are prepared by mechanical comminution for 10 to 30 mins of an aqueous suspension of surface active agent and a guanadinium salt of an anionic dyestuff or a sodium salt of an anionic dyestuff and a guanadinium salt followed by drying to solidify the product. Dyeing liquors and printing pastes may be prepared from the solid dyestuff preparations.