Blends of low molecular weight crystalline polyethylene and crystalline EPDM polymers exhibit good processing and on curing show unexpected high flexural modulus. The addition of reinforcing agents will raise the modulus and other physical properties but the processability can remain satisfactory....http://www.google.fr/patents/US4128523?utm_source=gb-gplus-shareBrevet US4128523 - Polyethylene-EDPM compositions