Process for preparing a cycloolefin copolymer

Details Process for preparing a cycloolefin copolymer Process for preparing a cycloolefin copolymer

1998-06-04

2000-02-01

Teskin, Fred

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526126, 526127, 526160, 526161, 526281, 526308, 526943, C08F23200

Patent

active

060204443

ABSTRACT:
The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ##STR1## where L is a .pi.-ligand, L' is a .pi.-ligand, T is a bridge between L and L', M is a tetravalent transition metal, m is 1 or 2 and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are, independently of one another, identical or different and are each a hydrogen atom or a C.sub.1 -C.sub.20 -hydrocarbon radical.

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G. Chandra et al, "Amido-Derivatives of Metals and Metalloids", J. Chem. Soc. (A), 1968, pp. 1940-1945.
G. Chandra et al, Amido-Derivatives of Metals and Metalloids, J. Chem. Soc. (Q), 1968, pp. 1940-2001.
Ronald Halterman, "Synthesis and Applications of Chiral Cyclopentadienylmetal Complexes", Chem. Rev., 1992, 92, pp. 965-994.

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