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Keltan® 4577

Keltan® 4577

Crystalline ethylene-propylene rubber with medium ENB (ethylidene norbornene) content and a medium Mooney viscosity at 75 PHR extender oil. The combination of very high molecular weight and high green strength results in a very high level of physical properties and contributes to an excellent collapse resistance in extruded profiles.

Property Nominal Value with Unit Test Method
Mooney Viscosity ML (1+4) at 125 C 46 MU ISO 289 / ASTM D1646
Ethylene Content 66 wt% ASTM D3900
ENB Content 5.1 wt% ASTM D6047
Oil Content 75 PHR ISO 1407
Molecular Weight Distribution Narrow Internal Method

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