Phosphoramidate catalysts for ethylene-based interpolymers

    公开(公告)号:US11168155B2

    公开(公告)日:2021-11-09

    申请号:US16488063

    申请日:2018-02-28

    Abstract: Catalyst systems contain metal-ligand complexes according to formula (I): In formula (I), M is Ti, Zr, of Hf; n is 0, 1, 2, or 3; m is 1 or 2; each R1 and each R2 is independently chosen from (C1-C40)hydrocarbyl, (C1-C40)heterohydrocarbyl, (C1-C40)aryl, (C1-C40)heteroaryl, halogen, and —H; R1 and R2 are optionally covalently linked to each other; and each R3 is a hydrocarbon or heterohydrocarbon radical having an identity depending on the value of subscript m. The metal-ligand complexes may be incorporated as procatalysts in catalyst systems for polyolefin polymerization.

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