Catalyst Components for the Polymerization of Olefins
AssigneeBasell Poliolefine Italia S.r.l.
InventorsDario Liguori, Francesca Focante, Giampiero Morini, Luigi Resconi, Gianni Vitale
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Abstract
A catalyst component for the polymerization of olefins CH2═CHR, wherein R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms. In particular, the present invention relates to catalyst components comprising Mg, Ti, halogen and a compound selected from phosphorous derivatives, boron derivatives and aromatic heterocyclic nitrogen derivatives. Said catalyst components are particularly suitable for the preparation of homo and copolymers of ethylene with α-olefins.
Claims10
A solid catalyst component for the polymerization of olefins comprising Mg, Ti, halogen and at least one compound belonging to at least one of (a) aromatic heterocyclic nitrogen derivatives wherein at least one nitrogen atom is part of a five member ring structure, (b) boron derivatives of formula BR3, and (c) phosphorous derivatives of formula PR3 or POR3, wherein R is, independently, a halogen, a hydrocarbyl group having from 1 to 20 carbon atoms or a hydrocarbyloxy group having up to 20 carbon atoms.
A catalyst for the polymerization of olefins comprising the product obtained by contacting:
- 1) a solid catalyst component comprising Mg, Ti halogen and at least one compound belonging to at least one of (a) aromatic heterocyclic nitrogen derivatives wherein at least one nitrogen atom is part of a five member ring structure (b) boron derivatives of formula BR3, and (c) phosphorous derivatives of formula PR3 or POR3, wherein R is, independently a halogen, a hydrocarbyl group having from 1 to 20 carbon atoms or a hydrocarbyloxy group having up to 20 carbon atoms.
- 2) at least one aluminum alkyl compound, and optionally
- 3) an external electron donor compound.
A process for the (co)polymerization of olefins CH2═CHR, wherein R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, comprising polymerizing olefins in the presence of a catalyst comprising the product obtained by contacting:
- 1) a solid catalyst component comprising Mg, Ti, halogen and at least one compound belonging to at least one of (a) aromatic heterocyclic nitrogen derivatives wherein at least one nitrogen atom is part of a five member ring structure, (b) boron derivatives of formula BR3, and (c) phosphorous derivatives of formula PR3, or POR3 wherein R is, independently a halogen, a hydrocarbyl group having from 1 to 20 carbon atoms or a hydrocarbyloxy group having up to 20 carbon atoms,
- 2) at least one aluminum alkyl compound, and optionally
- 3) an external electron donor compound
Dependencies are inferred from the claim text.