Basell Polyolefine Gmbh

Basell Poliolefine Italia, S.p.a.

Peter A A Klusener

Giampiero Morini

Ilya Nifant'ev

Giulio Balbontin

Pavel V Ivchenko

Igor Kashulin

Kees P De Kloe

Frans M Kornorffer

Jos J H Rijsemus

A process for preparing cyclopentadiene derivatives comprising the steps of: a) coupling a five membered heterocycle ring with a five or six membered heterocycle ring; b) reacting the obtained compound with a carbonilating system: c) reducing the obtained compound.

Synthesis of cyclopentadiene derivatives

The present invention relates to a solid catalyst component for the polymerization of olefins CH &boxH;CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, comprising Mg, Ti, halogen and an electron donor selected from substituted succinates of a particular formula. Said catalyst components when used in the polymerization of olefins, and in particular of propylene, are capable to give polymers in high yields and with high isotactic index expressed in terms of high xylene insolubility.

Components and catalysts for the polymerization of olefins

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Utrecht, Netherlands

Peter A A Klusener