MODIFIED STYRENIC RESINS THROUGH HYDROGENATION

    公开(公告)号:US20250163193A1

    公开(公告)日:2025-05-22

    申请号:US18869578

    申请日:2023-07-13

    Abstract: Methods for the hydrogenation of aromatic-containing polymers are described. A method includes hydrogenation of polymers by contacting a polymer solution that includes an aromatic-containing polymer and a mixture of a non-polar solvent and a polar solvent having a dielectric constant greater than 7.6 at 25° C. and a non-polar solvent having a dielectric constant of 5 or less at 25° C. with a hydrogenation catalyst to produce polymer composition that includes at least one hydrogenated and/or at least one partially hydrogenated aromatic ring. The polar to non-polar solvent volume ratio ranges from 10:90 to 80:20.

    PROCESS FOR PREPARING POLYALPHA-OLEFINS
    4.
    发明公开

    公开(公告)号:US20240352159A1

    公开(公告)日:2024-10-24

    申请号:US18682304

    申请日:2022-08-10

    CPC classification number: C08F4/76 C08F110/04 C08F110/14

    Abstract: The invention relates to a process for preparing polyalpha-olefins using a catalyst composition comprising a reaction product of an organometallic complex and a co-catalyst, wherein the comprising an organometallic complex is represented by the general formula: LMXn wherein: (i) ‘L’ is an organic ligand; (ii) ‘M’ is a transition metal having a valency of ‘p’, wherein the metal ‘M’ is selected from Ti, Zr, and Hf; (iii) ‘X’ is an anionic ligand to the metal ‘M’, and wherein ‘X’ is selected from the group consisting of halogens, alkyls, aralkyls, alkoxides, amides, and combinations thereof; (iv) ‘n’ is the number of ‘X’ groups and equals p-2.

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