US 11,691,998 B2
1,2-phenylene bridged 1-indenyl-2-indenyl metallocene complexes for olefin polymerisation
Coen Hendriksen, Geleen (NL); Nicolaas Hendrika Friederichs, Brunssum (NL); Alexander Z. Voskoboynikov, Moscow (RU); Antonio Vittoria, Avella (IT); Vincenzo Busico, Naples (IT); Roberta Cipullo, Naples (IT); Dmitry Y. Mladentsev, Moscow (RU); Bogdan A. Guzeev, Moscow (RU); and Dmitry V. Uborsky, Moscow (RU)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed on Nov. 11, 2022, as Appl. No. 17/985,254.
Application 17/985,254 is a division of application No. 16/963,709, previously published as PCT/EP2019/051654, filed on Jan. 23, 2019.
Claims priority of application No. 18153200 (EP), filed on Jan. 24, 2018.
Prior Publication US 2023/0086874 A1, Mar. 23, 2023
Int. Cl. C07F 17/00 (2006.01); C08F 4/6592 (2006.01); C08F 210/16 (2006.01); C08F 4/76 (2006.01); C08F 10/02 (2006.01)
CPC C07F 17/00 (2013.01) [C08F 4/65927 (2013.01); C08F 4/76 (2013.01); C08F 10/02 (2013.01); C08F 210/16 (2013.01)] 12 Claims
 
1. A process for the preparation of olefin polymers, the process comprising: polymerising a mixture of ethylene and at least one other α-olefin of 3 or more carbon atoms in the presence of a metallocene complex according to formula I forming an ethylene-olefin copolymer, wherein the metallocene complex optionally is immobilized on a support,

OG Complex Work Unit Chemistry
wherein
R1 and R2 are independently selected from H, a methyl, ethyl, n-propyl or iso-propyl group, a butyl group, a hexyl group, a cyclohexyl group, or a phenyl group,
R3 is a methyl, ethyl, n-propyl or iso-propyl group,
R′ is selected from H, an alkyl group, or an aryl group, and wherein different R′ substituents are optionally connected to form a ring structure,
B is a 1,2-phenylene bridge,
Mt is Zr, X is a methyl group, Cl, Br or I, z is the number of X groups and equals the valence of Mt minus 2.