Preparing a catalyst component for polymerization of olefins
||Патент на изобретение
||US 9587051 B2
|Номер заявки (21):
|Дата подачи заявки (22):
||28 янв. 2014 г.
|Дата начала отсчета срока действия патента (24):
|Дата публикации патента (44,45,46):
||7 мар. 2017 г.
|Дата публикации заявки (43):
A process for preparing a catalyst component, including: contacting a compound R9zMgX2−z wherein R9 is aromatic, aliphatic or cyclo-aliphatic group containing up to 20 carbon atoms, X is a halide, and z is larger than 0 and smaller than 2, with an alkoxy- or aryloxy-containing silane compound to give a first intermediate reaction product; contacting the first intermediate reaction product with at least one activating compound selected electron donors, compounds of formula M(OR10)v-w(OR11)w, wherein M is Ti, Zr, Hf, Al or Si, and M(OR10)v-w(R11)w wherein M is Si, each R10 and R11, independently, represent an alkyl, alkenyl or aryl group, v is the valency of M, v is 3 or 4, and w is less than v, to give a second intermediate reaction product; and contacting the second intermediate reaction product with a halogen-containing Ti-compound, a monoester as activating agent, and a 1,3-diether as an internal electron donor.