BIODEGRADABLE FOAM WITH ALGINATE
    5.
    发明申请

    公开(公告)号:WO2023060076A1

    公开(公告)日:2023-04-13

    申请号:PCT/US2022/077529

    申请日:2022-10-04

    Abstract: A foam is described. The foam comprising a polymer matrix including at least one of chitin, chitosan, or chitosan oligosaccharide. The polymer matrix is porous. The foam further comprising alginate. The foam has a density of less than 1g/cm3. A method of making foam is described. The method comprising dissolving at least one of chitin, chitosan, or chitosan oligosaccharide in a first solution, dissolving alginate in a second solution that is alkaline and separate from the first solution, mixing the first solution and the second solution together to form a foam precursor, and drying the foam precursor to form the foam.

    CROSSLINKED POLYOLEFIN FOAM AND PROCESS FOR PRODUCING SAME

    公开(公告)号:WO2021133522A1

    公开(公告)日:2021-07-01

    申请号:PCT/US2020/062831

    申请日:2020-12-02

    Abstract: The process disclosed includes an extruder under extrusion conditions at a temperature from 50°C to 250°C, and a polymer composition. The polymer composition includes (A) greater than or equal to 5 wt% of a silane functionalized olefin-based polymer with first melting temperature, Tm1, (B) optionally, a nonsilane functionalized polyolefin, with second melting temperature, Tm2, (C) a highly effective silanol condensation catalyst (HEC), (D) a permeability modifier, and (E) optionally, a scorch inhibitor. The process includes introducing a physical blowing agent into the polymer composition to form a foamable composition. The foamable composition is cooled to a foaming temperature from 10°C less than to 10°C greater than Tm1. The foamable composition from an extruder exit die to form a foam composition. The foam composition is moisture cured to form a crosslinked foam composition having a density from 0.010 g/cc to 0.200 g/cc, and a gel content from 5% to 100%.

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