Metallocenes containing ligands of 2-substituted indenyl...

Details Metallocenes containing ligands of 2-substituted indenyl... Metallocenes containing ligands of 2-substituted indenyl...

2007-04-10

2007-04-10

Teskin, Fred (Department: 1713)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S009000, C556S011000, C556S014000, C556S019000, C556S021000, C556S022000, C556S043000, C556S058000, C526S129000, C526S160000, C502S117000, C502S152000

Reissue Patent

active

08895950

ABSTRACT:
The novel metallocenes of the formula Iin which, preferably, M1is Zr or Hf, R1and R2are alkyl or halogen, R3and R4are hydrogen, R5and R6are alkyl or haloalkyl, —(CR8R9)m—R7—(CR8R9)n— is a single- or multi-membered chain in which R7may also be a (substituted) hetero atom, m+n is zero or 1, and R10is hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high stereospecificity and high melting point.

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