PROCESS

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专利内容由知识产权出版社提供

专利名称：PROCESS

发明人：Resconi, Luigi,Töltsch, Wilfried,Ajellal,

Noureddine,Virkkunen, Ville,Lehtiniemi, Ismo

申请号：EP13177881.3

申请日：20130724

公开号：EP2829556B1

公开日：20161116

摘要：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.

申请人：BOREALIS AG

地址：AT

国籍：AT

代理机构：Campbell, Neil Boyd

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process