Method for the treatment of mineral extender fillers

摘要

This invention provides a method for the treatment of mineral extender fillers. The mineral extender filler is treated essentially simultaneously with a halogenated organosilane and a compound containing an active hydrogen, preferably ammonia. The reaction is conducted at atmospheric pressure and at a temperature at which the halogenated organosilane is gaseous, but preferably no higher than 250 DEG C. This method is fast, efficient and economical.