公开(公告)号：US20230113200A1

公开(公告)日：2023-04-13

申请号：US17908110

申请日：2021-03-02

Applicant: BOREALIS AG

Inventor： Frank Schröder ,  Timo Leinonen ,  Peter Denifl ,  Sascha Kaltenbacher ,  Bernhard Hagemann

IPC: C08F4/646 ,  C08F116/20 ,  C08F4/654 ,  C08F4/657

Abstract: The present invention relates to a process for producing a solid Ziegler-Natta catalyst component in the form of solid particles having a median particle size (D50vol) of 5 to 500 µm and the process comprising steps I. providing a solution of a Group 2 metal dihalide (1UPAC, Nomenclature of Inorganic Chemistry, 2005) by dissolving a solid Group 2 metal dihalide in an alcohol mixture comprising at least a monohydric alcohol (A1) of formula ROM, where R is selected from a hydrocarbyl group of 3 to 16 C atoms and an alcohol (A2) comprising in addition to the hydroxyl group another oxygen containing functional group not being a hydroxyl group, contacting the solution of the Group 2 metal dihalide of step I with a compound in a liquid form of a transition metal of Group 4 to 10, or of a lanthanide or actinide, preferably a transition metal of Group 4 to 6 of Periodic Table (1UPAC, Nomenclature of Inorganic Chemistry, 2005), and III. recovering the solid catalyst component, wherein the amount of Group 2 metal originating from Group 2 metal dihalide constitutes 100 % of the whole amount of the Group 2 metal used in the process for producing the solid Ziegler-Natta catalyst component.

公开(公告)号：US20240191051A1

公开(公告)日：2024-06-13

申请号：US18285313

申请日：2022-04-13

Applicant: Borealis AG

Inventor： Andreas Albrecht ,  Udo Muster ,  Bernhard Hagemann

IPC: C08J11/08 ,  B29B17/00 ,  B29B17/02 ,  B29B17/04 ,  B29K23/00 ,  B29K105/00

CPC classification number: C08J11/08 ,  B29B17/02 ,  B29B17/0412 ,  B29B2017/0015 ,  B29B2017/0203 ,  B29B2017/0293 ,  B29B2017/0468 ,  B29B2017/0484 ,  B29K2023/065 ,  B29K2023/12 ,  B29K2105/0088 ,  C08J2323/06 ,  C08J2323/12

Abstract: The present invention generally relates to a process for separating polyolefin fractions from solid polymer material mixtures by molar mass fractionation. The present invention also relates to polyolefin fractions obtained by the process and the use of these fractions in the manufacture of an article.