Elastomer Modified Polypropylene (EMPP)

Properties and Applications

Elastomer modified polypropylene (EMPP) is a type of thermoplastic polyolefin produced by blending/reacting polypropylene (PP) with an olefinic elastomer such as EPDM, EPR, EVA and SBS. These low-cost, high-volume elastomers combine the advantages of polyolefins with those of rubbers. For example, they exhibit easy processability, excellent surface finish, and very good balance between toughness and stiffness. Like ordinary polyolefins, they are resistant to acids, bases and detergents.

EMPPs are often a good alternative to more expensive rubbers and plastics such as polyamide polymers and when a lower upper service temperature is acceptable and when stress-induced creep and set can be avoided. They are often designed for processing by injection molding.

EMPPs can be used for a broad range of applications including specialty food and pharmaceutical packaging; medical IV bags and tubing; flexible profiles, hoses and pipes; and wire and cable insulation. They are extensively used in the automotive industry. Important applications include exterior and interior elastic components such as soft instrument panels, armrests, and dashboard skins; floor mats; pillar trims; rear and front bumper fascia; and side molding and conduit tubing.

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