Catalyst system for polymerization of an olefin
Patents
| Language: |
Английский |
| Type: |
Invention |
| Number |
US 20250382394 A1 |
| Request number: |
US18/881,113 |
| Request date: |
Jul 5, 2023 |
| patent.field.start_date: |
|
| Registration date: |
Dec 18, 2025 |
| patent.field.request_publication_date: |
|
A process for the preparation of a procatalyst for preparing a catalyst composition for an olefin polymerization from a solution of R4 zMgX4 2-z, wherein the solution of R4 zMgX4 2-z is prepared by a process comprising the steps of: (i) reacting a magnesium powder with an organic halide in the presence of an organic solvent at a temperature of T1; (ii) stirring the reaction mixture obtained in step (i) for at least 1 hour at T1; (iii) raising the temperature of the reaction mixture obtained in step (ii) to a temperature T2; (iv) stirring the reaction mixture obtained in step (iii) for at least 1 hour at T2; (v) decanting or filtering the reaction mixture obtained in step (iv) to obtain a transparent solution of R4 zMgX4 2-z in the organic solvent; Wherein T1 ranges from 70° C.-90° C., T2 ranges from T1+30° C. to T1+40° C.