公开(公告)号：US11267907B2

公开(公告)日：2022-03-08

申请号：US16647766

申请日：2018-09-07

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Diego Brita ,  Nicolo Arich De Finetti ,  Ofelia Fusco ,  Benedetta Gaddi

IPC: C08F4/654 ,  C08F4/655 ,  C08F10/06 ,  C08F4/659

Abstract: A process for the preparation of a solid catalyst component for the polymerization of CH2═CHR olefins, wherein R is hydrogen or hydrocarbyl radical with 1-12 carbon atoms, made from or containing a Ti compound on a Mg chloride based support, including the steps of (a) reacting a Mg based compound with a liquid medium made from or containing a Ti compound, at a temperature ranging from 0 to 150° C., thereby yielding solid particles; and (b) suspending the solid particles coming from step (a) in a liquid medium made from or containing hydrocarbons at a temperature ranging from 10 to 100° C., wherein step (a) or (b) is carried out in the presence of 0.2 to 20.0% by weight, with respect to the amount of Mg compound, of particles of a solid compound containing more than 50% by weight of SiO2 units and having average particle size from 1 to 100 μm.

公开(公告)号：US11745158B2

公开(公告)日：2023-09-05

申请号：US17424382

申请日：2020-01-21

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： Tiziana Caputo ,  Antonio Mazzucco ,  Nicolo Arich De Finetti ,  Marco Bocchino

IPC: B01J19/00 ,  C08F2/01 ,  B01J19/24

CPC classification number: B01J19/0033 ,  B01J19/2435 ,  C08F2/01 ,  B01J2208/00044 ,  B01J2208/0061 ,  B01J2208/00672

Abstract: A method for monitoring and controlling the polymerization in a polymerization vessel by using a camera viewing unit to (a) detect features of the polymer particles, or the particles' environment, (b) compare the features to pre-defined acceptable values of these features or the environment, and (c) if a variation from the pre-defined values is detected, act on process parameters to reduce or eliminate the variation.