PMP formulae

PMP is used for its transparency (visible light and UV), chemical resistance, relatively higher thermal resistance, low density, electrical insulation, harmlessness, suitability for use in microwave ovens, food contact. 

The cost, high for a polyolefin, and the limited number of supply sources curb the development of PMP Impact strength is rather weak versus some other polyolefins. 

Applications are far fewer than for polyethylene and polypropylene. Consequently there are relatively few grades marketed, corresponding to the major applications such as  

Ah molten-state processing methods are usable, mainly extrusion, injection, blow moulding, co-extrusion, welding. 

The continuous use temperatures in an unstressed state are generally estimated from 90°C up to 110°C if the softening temperature is higher. 

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