METHOD FOR MANUFACTURE OF ISOPHORONEDIAMINE
    31.
    发明公开

    公开(公告)号:US20240279155A1

    公开(公告)日:2024-08-22

    申请号:US18564719

    申请日:2022-05-23

    申请人: BASF SE

    IPC分类号: C07C209/48 C07C209/86

    CPC分类号: C07C209/48 C07C209/86

    摘要: The invention relates to a method for the production of IPDA comprising the steps of: V. converting IPN with ammonia and hydrogen to IPDA, VI. removing hydrogen and/or ammonia from the effluent from step I VII. separating the effluent from step II in one or more steps into (v) a fraction comprising an organic phase having a boiling point lower than IPDA (vi) a fraction comprising an aqueous phase having a boing point lower than IPDA; (vii) a fraction comprising IPDA (viii) a fraction comprising components having a boiling point higher than IPDA; and VIII. subjecting the fraction (ii) to one or more waste-water pretreatment steps, se-lected from the group consisting of evaporation, oxidation and adsorption.

    Two-stage method for removing CO
    33.
    发明授权

    公开(公告)号:US12064724B2

    公开(公告)日:2024-08-20

    申请号:US17224188

    申请日:2021-04-07

    申请人: BASF SE

    IPC分类号: B01D53/14 C01B3/52 C10K1/00

    摘要: A plant for removing CO2 from a fluid stream via an aqueous absorption medium contains a) a first absorption zone for treating the fluid stream with a partially regenerated absorption medium, b) a second absorption zone for treating the treated fluid stream with a regenerated absorption medium, c) a first flash vessel for depressurizing the loaded absorption medium, d) a second flash vessel for depressurizing the sub-partially regenerated absorption medium, e) a stripper for thermally regenerating the partially regenerated absorption medium, f) a conduit for feeding a substream of the partially regenerated absorption medium into the first absorption zone and a conduit for feeding a further substream of the partially regenerated absorption medium into a stripper, g) a conduit for recirculating the regenerated absorption medium to the second absorption zone, and h) a jet pump for compressing the water vapor-comprising, second CO2-comprising gas stream.

    Thermoplastic polyurethane
    36.
    发明授权

    公开(公告)号:US12060450B2

    公开(公告)日:2024-08-13

    申请号:US16478701

    申请日:2018-02-13

    申请人: BASF SE

    摘要: The present invention relates to thermoplastic polyurethanes obtainable or obtained by reaction of at least one polyisocyanate composition which comprises 4,4′-MDI and at least one further polyisocyanate, at least one chain extender of general formula (I) and at least one polyol composition. The present invention further relates to a production process for such thermoplastic polyurethanes and to the use of a thermoplastic polyurethane according to the invention or of a thermoplastic polyurethane obtainable or obtained by a process according to the invention for producing extrusion products, films and molded articles.

    METHODS FOR THE PURIFICATION OF L-GLUFOSINATE

    公开(公告)号:US20240247013A1

    公开(公告)日:2024-07-25

    申请号:US18628116

    申请日:2024-04-05

    申请人: BASF SE

    IPC分类号: C07F9/535 C07F9/30

    CPC分类号: C07F9/535 C07F9/301

    摘要: Compositions and methods for isolating L-glufosinate from a composition comprising L-glufosinate and glutamate are provided. The method comprises converting the glutamate to pyroglutamate followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The composition comprising L-glufosinate and glutamate is subjected to an elevated temperature for a sufficient time to allow for the conversion of glutamate to pyroglutamate, followed by the isolation of L-glufosinate from the pyroglutamate and other components of the composition to obtain substantially purified L-glufosinate. The glutamate alternatively may be converted to pyroglutamate by enzymatic conversion. The purified L-glufosinate is present in a final composition at a concentration of 90% or greater of the sum of L-glufosinate, glutamate, and pyroglutamate. In some embodiments, a portion of the glutamate in the starting composition may be separated from the L-glufosinate using a crystallization step. Solid forms of L-glufosinate materials, including crystalline L-glufosinate ammonium, are also described.