Unfilled polymers do not fulfill in many cases the specific end use requirements in terms of cost, stiffness, flame retardancy or other properties. Maleic anhydride grafted polymers have been evaluated as coupling agents in various polyolefm-filler systems such as ATH (Alumina trihydrate), calcium carbonate, glass and mica. Substantial increases in the elongation and impact strength properties can be achieved in highly filled blends using coupling agents.
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