Abstract
Metal salts of new type amphoteric surface active agents were incorporated into sheets, inflation films and monofilaments of polypropylene by extruding and other molding methods.
Antistatic and dyeing properties of these polypropylene were studied. Metal salts of amphoteric surface active agents did not bleed out on the surface of the molded polypropylene and these metal salts had the excellent property as internal antistatic agents for polypropylene. The antistatic property of sheets and films was diminished by washing, but soon recovered to the original.
Blank polypropylene showed (-) ζ-potential at pH 2-12, but the isoelectric point was observed at pH 6.5-7.5 by incorporated with metal salts of amphoteric surface active agents.
Dyeability of polypropylene incorporating the metal salts increased in the acidic dyeing. The dyed polypropylene had high resistance to light, rubbing and washing.
