公开(公告)号：WO2010097351A1

公开(公告)日：2010-09-02

申请号：PCT/EP2010/052172

申请日：2010-02-22

Applicant: BOREALIS AG ,  GAROFF, Thomas ,  WALDVOGEL, Päivi ,  KALLIO, Kalle ,  ERIKSSON, Virginie ,  AITTOLA, Aki ,  KOKKO, Esa

Inventor： GAROFF, Thomas ,  WALDVOGEL, Päivi ,  KALLIO, Kalle ,  ERIKSSON, Virginie ,  AITTOLA, Aki ,  KOKKO, Esa

IPC: C08F10/00 ,  C08F4/685 ,  C08F2/00

CPC classification number: C08F10/00 ,  C08F110/02 ,  C08F210/16 ,  C08F2410/03 ,  Y10T428/139 ,  C08F4/6357 ,  C08F4/685 ,  C08F2/001 ,  C08F2500/07 ,  C08F2500/12 ,  C08F2500/05 ,  C08F2500/18 ,  C08F210/14 ,  C08F2500/08

Abstract: Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR 1 ) 2-n (R 1 ) n , wherein each R 1 independently represents a C 1 -C 20 hydrocarbyl group and 0 2 ) m X 3-m , wherein each R 2 independently represents an alkyl of up to 6 carbon atoms; each X is independently a halogen; 0 1 -C 20 -alkyl group, 0

Abstract translation: 用于在至少两个串联反应器中连续串联生产多模式线性低密度聚乙烯的多级聚合方法，包括至少（i）在第一浆料相阶段聚合乙烯单体和任选的一种或多种α-烯烃共聚单体 在齐格勒 - 纳塔聚合催化剂体系存在下，得到第一聚乙烯级分组分（A）（ⅱ）在第二种气相或淤浆相阶段中聚合乙烯单体和一种或多种α-烯烃共聚单体，在 齐格勒 - 纳塔聚合催化剂体系，以获得第二聚乙烯部分组分（B），由此齐格勒 - 纳塔聚合催化剂体系包括：1）通过使至少与下式接触形成的固体前催化剂：a）式 ）：Mg（OR 1）2-n（R 1）n，其中每个R 1独立地表示C 1 -C 20烃基和O 2）m X 3-m，其中每个R 2独立地表示至多6个碳原子的烷基; 每个X独立地是卤素; 0