| 摘要 |
The present invention relates to a process for the preparation of rubber-like ethylene/alpha-olefin copolymers and ethylene/alpha-olefin/non-conjugate diene terpolymers using a metallocene as catalyst, which process is characterized in that the metallocene used is a compound of the general formula (I) wherein R1 to R14 are each independently of the others H, saturated and unsaturated C1-C12-alkyl radicals, C6-C12-aryl radicals or saturated and unsaturated C7-C12-aralkyl radicals, X represents H, halogen, C1-C12-alkyl radicals, Y represents Si or Ge, M represents a metal of group 4 of the periodic system of the elements according to IUPAC 1985, optionally in the presence of one or more co-catalysts, and to the use of the polymers so obtainable in the production of moulded bodies of any kind.
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