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    • 90. 发明公开
    • PROCESS FOR THE PREPARATION OF COPOLYMERS OF PROPYLENE
    • 制备丙烯共聚物的方法
    • EP3191529A1
    • 2017-07-19
    • EP15762628.4
    • 2015-09-11
    • Borealis AG
    • RESCONI, LuigiTÖLTSCH, WilfriedWANG, Jingbo
    • C08F2/38C08F210/06C08F4/6592
    • C08F4/16B01J35/026C08F2/38C08F210/02C08F210/06C08F2500/10C08F2500/17C08F4/65927C08F2500/12
    • A process for the preparation of a copolymer of propylene and ethylene comprising polymerising propylene and ethylene in the gas phase in the presence of a solid particulate catalyst free from an external carrier comprising: (i) a symmetrical 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-SiR'2-, -R'2Ge-, wherein each R' is independently a hydrogen atom, C1-C20-alkyi, tri(C1- C20-aikyl)silyl, C6-C20-aryl, C7-C20-arylalkyl or C7-C20-alkylaryl; R2 is a C1-C20 hydrocarbyl radical; m is 2 to 5; R9 is a H or C1-C20 hydrocarbyl radical; R7 is a hydrogen atom or a C1-10-hydrocarbyl radical; n is 0 to 3; R1 is a C 1-C20 hydrocarbyl radical and optionally two adjacent R1 groups taken together can form a further mono or multicyclic ring condensed to Ph ring optionally substituted by one or two groups R4; and R4 is a C1-C10 alkyl radical; and (ii) a cocatalyst, preferably comprising an organometallic compound of a Group 13 metal; wherein the xylene soluble fraction of the propylene ethylene copolymer has an ethylene content of at least 10 wt% and an intrinsic viscosity of at least 1.2 dl/g.
    • 一种制备丙烯和乙烯共聚物的方法,包括在不含外部载体的固体颗粒催化剂存在下,在气相中聚合丙烯和乙烯,该方法包括:(ⅰ)式(Ⅰ)的对称配合物,其中M 是锆或铪; 每个X是σ配体; L是选自-R'2C - , - R'2C-CR'2 - , - R'2Si-,-R'2Si-SiR'2-,-R'2Ge-的二价桥,其中每个R'是 (C 1 -C 20 - 烷基)甲硅烷基,C 6 -C 20 - 芳基,C 7 -C 20 - 芳基烷基或C 7 -C 20 - 烷基芳基; R2是C1-C20烃基; m是2至5; R9是H或C1-C20烃基; R7是氢原子或C1-10-烃基; n是0至3; R 1是C 1 -C 20烃基,并且任选两个相邻的R 1基团可以一起形成稠合至任选地被一个或两个基团R 4取代的Ph环的单环或多环; 和R4是C1-C10烷基; 和(ii)助催化剂,优选包含第13族金属的有机金属化合物; 其中所述丙烯乙烯共聚物的二甲苯可溶部分具有至少10wt%的乙烯含量和至少1.2dl / g的特性粘度。