NON-ISOCYANATE POLYURETHANES FROM BIO-BASED POLYOLS

    公开(公告)号:US20230340200A1

    公开(公告)日:2023-10-26

    申请号:US18007992

    申请日:2021-06-03

    IPC分类号: C08G71/04

    CPC分类号: C08G71/04 C08G2101/00

    摘要: Bio-based polymer precursors and non-isocyanate polyurethanes (NIPU) and non-isocyanate polyurethane foams (NIPUF) that can be formed from the precursors, as well as methods for the synthesis of the precursors and the polyurethane products are described. The bio-based polymer precursors are formed through functionalization of a bio-based polyol, e.g., lignin, with cyclic carbonates. The bio-based polyol starting materials need not be pre-processed and can include Kraft lignin. NIPU/NIPUF can be synthesized through a ring opening curing reaction of cyclic carbonates of the bio-based polyol precursor with diamines. The carbonates and diamines can include non-toxic bio-based carbonates.