MULTI-ARM POLYMER PRODRUGS
    4.
    发明申请

    公开(公告)号:US20220079936A1

    公开(公告)日:2022-03-17

    申请号:US17535385

    申请日:2021-11-24

    Abstract: Provided herein are water-soluble prodrugs, compositions comprising such prodrugs, and related methods of making and administering the same. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are typically covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water-soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.

    Process for making polyether diols

    公开(公告)号:US11124604B2

    公开(公告)日:2021-09-21

    申请号:US16313516

    申请日:2017-06-12

    Abstract: Polyether diols characterized by a hydroxyl number of 56 or lower, high average functionality and high primary hydroxyl content are prepared by alkoxylating an unsaturated alcohol in multiple steps to form a polyether monol that contains 39% or more primary hydroxyl groups, and then reacting the polyether monol with a mercaptoalcohol that has a primary hydroxyl group.

    Amphiphilic block copolymer and coating arrangement

    公开(公告)号:US11041090B2

    公开(公告)日:2021-06-22

    申请号:US16314630

    申请日:2017-06-30

    Abstract: The disclosure relates to an amphiphilic block copolymer comprising a first block consisting of a polymeric hydrophilic domain, wherein the polymeric hydrophilic domain consists of a polyglycerol; an optional second block consisting of a hydrophobic domain and a first linker domain, wherein the second block is covalently bound to the first block via the first linker domain, an optional third block consisting of a catechol domain and a second linker domain, wherein the third block is covalently bound to the first block via the second linker domain; and a fourth block consisting of a crosslinking domain and a third linker domain, wherein the fourth block is covalently bound to the first block via the third linker domain, wherein the crosslinking domain comprises a reactive residue enabling a crosslinking between individual molecules of the amphiphilic block copolymer.

    POLYMER GEL HAVING SPONGE-LIKE POROUS STRUCTURE

    公开(公告)号:US20210155799A1

    公开(公告)日:2021-05-27

    申请号:US17263403

    申请日:2019-07-29

    Abstract: An object of the present invention is to provide a gel material including a solvophilic polymer having a μm-scale porous structure.
    A polymer gel in which solvophilic polymer units are cross-linked with each other, wherein the polymer gel contains a solvent and has a three-dimensional network structure having two regions: a first region in which the polymer units are densely present and a second region in which the polymer units are sparsely present, and a mesh size composed of the first region is from 1 to 500 μm.

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