Abstract: A waterproof membrane useful as a coating or flashing for roofs or as a liner for containing liquids which comprises a composition containing a neutralized sulfonated EPDM polymer and asphalt, the former component comprising at least 30% by weight of the total weight of the polymer and asphalt. The composition has outstanding physical properties and an unexpectedly high tensile strength.

Abstract: A waterproof membrane comprising an elastomeric sheet, said sheet formed of a composition which includes a neutralized acid group containing elastomeric polymer, the neutralized acid group cation selected from the group consisting of ammonium, antimony, aluminum, iron, lead and a metal of Group IA, IIA, IB or IIB of the Periodic Table of Elements and mixtures thereof; a non-polar process oil; carbon black and a preferential plasticizer is disclosed. In a preferred embodiment the membrane is supported with a supporting sheet, said sheet selected from the group consisting of fabrics, paper and metal foil. The use of this membrane as a roof covering, pond, pit or aqueduct liner is recited. The method of forming the membrane, and the resultant roof covering, pond, pit or aqueduct liner is also disclosed.

Abstract: A composition comprising an admixture of nylon and an elastomer containing neutralized sulfonated ethylene propylene diene rubbers (EPDM) and a preferential plasticizer is disclosed. The composition preferably comprises from 10 to 25 wt. % of the elastomer and forms compositions having high impact resistance.

Abstract: Blends of nylon and an elastomer containing neutralized sulfonated ethylene propylene diene rubbers (EPDM) and a preferential plasticizer and a process for the preparation thereof. The blend preferably comprises from 5 to 60 wt. % of the elastomer and forms compositions having high impact resistance.