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

    CPC classification number: C08G71/04 C08G2101/00

    Abstract: 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.

    Tunable Orbital Angular Momentum System

    公开(公告)号:US20220390810A1

    公开(公告)日:2022-12-08

    申请号:US17838632

    申请日:2022-06-13

    Abstract: This system and method of for providing a tunable orbital angular momentum system for providing higher order Bessel beams comprising: an acousto-optical deflector configured to receive an input beam, deflect a first portion of the input beam a first deflection angle relative to an axis of propagation and along an optical axis and deflect a second portion of the input beam a second deflection angle relative to the optical axis; a line generator disposed along the optical angle for receiving the first portion and the second portion of the input beam and provide an elliptical Gaussian mean; a log-polar optics assembly disposed along the optical angle for receiving the elliptical Gaussian beam and wrapping the elliptical Gaussian beam with an asymmetric ring; and, a Fourier lens configured to receive the wrapped elliptical Gaussian beam.

    Diazacyclobutene derivatives as anti-parasitic drug substances

    公开(公告)号:US11510906B1

    公开(公告)日:2022-11-29

    申请号:US16811135

    申请日:2020-03-06

    Abstract: A drug product and method for treating a parasitic disease in a host is described. The drug product comprises:
    a carrier matrix; and
    a drug substance having the formula: wherein:
    R1 is selected from the group consisting of H, aliphatic of 1 to 100 carbons and arene comprising up to 100 carbons;
    each R3 is independently selected from the group consisting of H, aliphatic of 1 to 100 carbons and arene comprising up to 100 carbons;
    Y represents those elements necessary to form a 5 or 6 membered ring;
    X is selected from the group consisting of B, O, N, S, Se and P; and
    n is 1-4 as necessary to complete the valence of X.

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