Verfahren

Details

Veröffentlichungs-Nr.

EP2829556

Aktenzeichen

EP13177881

Anmeldetag

24. Juli 2013

Veröffentlichung

16. November 2016

Erteilung

16. November 2016

Rechtsraum

EP

IPC

C08F110/06C08F4/657C08F4/6592

Abstract

A process for the preparation of a propylene homopolymer in a multistage polymerisation process in the presence of a single site catalyst, said process comprising: (I) in a slurry polymerisation step, polymerising propylene in the presence of said single site catalyst; and subsequently (II) in a gas polymerisation step polymerising propylene in the presence of catalyst and polymer from step (I) so as to form a propylene homopolymer; wherein said catalyst comprises (i) a metallocene complex of a Group 4 metal, said metallocene comprising at least two cyclopentadienyl type ligands; (ii) a boron based cocatalyst; and (iii) an aluminoxane cocatalyst; said catalyst being in solid form, preferably in solid particulate form, and being free from an external carrier.

Anmelder

Firma

Borealis AG

Land

🇦🇹 Österreich

Fachgebiete