Treatment of pigments for improved dispersibility and concentration in thermoplastic resins

摘要

Thermoplastic concentrates comprising inorganic pigments, such as titanium dioxide, treated with a dialkyl sulfosuccinate treating agent, of the formula ROOCCHSO3MCH2COOR', where R and R' are monovalent alkyl radicals having 2 to 20 carbon atoms and M is a metallic monovalent cation, are disclosed. Such treatment improves the dispersibility of the pigments in thermoplastic resins.