公开(公告)号：US20230312781A1

公开(公告)日：2023-10-05

申请号：US18022587

申请日：2021-08-30

Applicant: SABIC GLOBAL TECHNOLOGIES B.V.

Inventor： Enrico TROISI ,  Nicolaas Hendrika FRIEDERICHS ,  Theo TERVOORT ,  Fotios CHRISTAKOPOULOS

IPC: C08F110/02

CPC classification number: C08F110/02

Abstract: An ultra-high molecular weight polyethylene polymer has: a powder bulk density of at least 200 kg/m3; an intrinsic viscosity (I.V.) of at least 8 dl/g, as measured in accordance with ASTM D4020; and wherein, a specimen prepared from the ultra-high molecular weight polyethylene can be drawn in the absence of a solvent, at a total draw ratio of at least 50, when drawing at a drawing temperature of ≥Tm−30° C., wherein Tm is the melting temperature of the ultra-high molecular weight polyethylene polymer. A supported catalyst system for producing such UHMWPE polymers includes a transition metal complex and a particulate catalyst support including particles having a volume based median particle diameter of at least 0.3 micrometer. Articles derived from such polymers having excellent strength and modulus.