[EN] PROCESS FOR OLEFIN POLYMERISATION USING GROUP 4 METALLOCENE AS CATALYSTS<br/>[FR] PROCÉDÉ POUR LA POLYMÉRISATION D'OLÉFINES UTILISANT UN MÉTALLOCÈNE DU GROUPE 4 COMME CATALYSEUR
申请人:BOREALIS AG
公开号:WO2012001051A1
公开(公告)日:2012-01-05
A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of formula (I): wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR2-, -R'2Ge-, wherein each R' is independently a hydrogen atom, C1-C20-hydrocarbyl, tri(C1-C20-alkyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; each R1 is a C4-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring, optionally containing one or more heteroatoms belonging to groups 14-16, or is a C3-C20 hydrocarbyl radical branched at the β-atom to the cyclopentadienyl ring where the β-atom is an Si-atom; n is 0-3; each R18 is the same or different and may be a C1 -C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; each R4 is a hydrogen atom or a C1-6 -hydrocarbyl radical; each W is a 5 or 6 membered aryl or heteroaryl ring wherein each atom of said ring is optionally substituted with an R5 group; each R5 is the same or different and is a C1-C20 hydrocarbyl radical optionally containing one or more heteroatoms belonging to groups 14-16; and optionally two adjacent R5 groups taken together can form a further mono or multicyclic ring condensed to W optionally substituted by one or two groups R5; and (ii) a cocatalyst comprising an organometallic compound of a Group 13 metal.
一种制备随机丙烯共聚物的方法,包括在催化剂存在下聚合丙烯和至少一种C2-10α烯烃(尤其是乙烯);其中所述催化剂包括:(i)具有以下结构的配合物(I):其中M为锆或铪;每个X为σ配体;L为从-R'2C-,-R'2C-CR'2-,-R'2Si-,-R'2Si-SiR2-,-R'2Ge-中选择的二价桥,其中每个R'独立地为氢原子,C1-C20-烃基,三(C1-C20-烷基)硅基,C6-C20-芳基,C7-C20-芳基烷基或C7-C20-烷基芳基;每个R1为在β原子处与环戊二烯环支链的C4-C20烃基基团,可选地含有属于14-16族的一个或多个杂原子,或者为在β原子处与环戊二烯环支链的C3-C20烃基基团,其中β原子为Si原子;n为0-3;每个R18相同或不同,可能是C1-C20烃基基团,可选地含有属于14-16族的一个或多个杂原子;每个R4为氢原子或C1-6-烃基基团;每个W为5或6元杂芳基环,其中所述环的每个原子可选择地被一个R5基团取代;每个R5相同或不同,为C1-C20烃基基团,可选地含有属于14-16族的一个或多个杂原子;并且可选地,两个相邻的R5基团结合在一起形成一个进一步的单环或多环环,与W共轭,可选地由一个或两个R5基团取代;和(ii)包括第13族金属的有机金属化合物的共催化剂。