Title: Thermoplastic polymer blends comprising EPDM, E/EA copolymer and optionally P.E.

Abstract: Certain thermoplastic polymer blends have tensile strengths greater than that of any one polymer component. The blends comprise (1) at least one ethylene-propylene-diene (EPDM) polymer, (2) at least one ethylene-ethyl acrylate (EEA) polymer, and (3) optionally, at least one polyethylene. The blends are prepared by mixing physically the polymer components under heat and shear conditions. No curing or crosslinking agents are needed to obtain the superior tensile strengths of the thermoplastic blends. The blends are useful to prepare tubing, sheet products, wire and cable insulation, molded items and the like.

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Inventors: Herman, Richard M. (Elyria, OH, US)
Batiuk, Martin (Grafton, OH, US)

Application Number: 855137
Filing Date: 1977-11-28
Publication_date: 1978-12-26
Assignee: The B. F. Goodrich Company (Akron, OH)
Primary Class(es): 525/227 525/232, 525/240
Other Classes:
US Patent Ref:

3821333	Jun, 1974	Goodwin et al.	260/897.
3941859	Mar, 1976	Batiuk et al.	260/897.

Other Refs:
Primary Examiner: Seccuro, Carman J.
Assistant Examiner:
Attorney: Crehore; Charles A.