Ethylene-propylene terpolymer and crystalline 1,2 polybutadiene

Ethylene-propylene terpolymer and crystalline 1,2 polybutadiene

An ethylene-propylene rubber composition comprising 3 to 50 % by weight of at least one 1,2-polybutadiene having a 1,2-addition unit content of at least 70 %, a crystallinity of at least 5 % and an intrinsic viscosity [ eta ] as measured in toluene at 30 DEG C of at least 0.7 dl/g, and 97 to 50 % by...

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Bibliographische Detailangaben
Hauptverfasser: CHIKATSU, YOSHISHIGE, ANDO, NORIAKI, YAEDA, YASUYUKI, SAKATA, RYUICHI
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:An ethylene-propylene rubber composition comprising 3 to 50 % by weight of at least one 1,2-polybutadiene having a 1,2-addition unit content of at least 70 %, a crystallinity of at least 5 % and an intrinsic viscosity [ eta ] as measured in toluene at 30 DEG C of at least 0.7 dl/g, and 97 to 50 % by weight of at least one ethylene-propylene-diene terpolymer. The above composition has a high vulcanization rate, a high green strength and an excellent processability.