| 摘要 |
An ethylene propylene rubber blend containing an ethylene- alpha -olefin-diene copolymer as the rubber component of the blend. The ethylene- alpha -olefin-diene copolymer has a propylene content of about 43% to about 51% by weight, an iodine value of about 33 to about 39, a Mooney viscosity (ML1+4 100 DEG C.) of about 34 to about 44, and a molecular weight distribution (MW/MN) of about 5 or less. The ethylene propylene rubber blend can be used, for example, for formulating articles such as hoses, and in particular brake hoses. At least an inner tube provided inside the hose is preferably formed of the ethylene propylene rubber blend. The ethylene propylene rubber blends have a modulus of elasticity not significantly dependent upon temperature and are excellent in compression set and processability.
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