| 摘要 |
A catalyst system for the ring-opening matathesis polymerization, which consists of at least two components (a) and (b), wherein (a) is a ruthenium compound of formula I or IIRuX2(L1)m(L2)n(L3)o(L4)p(I),ARuX2(L1)rL2)3(II),wherein L1,L2, L3 and L4 are each independently of the other C1-C18alkylcyanide, C6-C24- aralkylcyanide, tertiary amine, tertiary phosphine which does not contain any secondary alkyl or cycloalkyl radicals bound to the phosphorus atom, or phosphite, X is halogen, A is arene, m, n, o and p are integers from 0 to 4, where 2</=m+n+o+p</=4, r and s are integers from 0 to 2, where 1</=r+s</=2, and (b) is a tertiary phosphine containing at least one secondary alkyl radical or cycloalkyl radical bound to the phosphorus atom, is particularly suitable for the polymerisation of strained cycloolefins by the RIM process.
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