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    Thermoplastic polyurethane from recycled raw materials
    151.
    发明授权
    Thermoplastic polyurethane from recycled raw materials 有权

    公开(公告)号：US11999816B2

    公开(公告)日：2024-06-04

    申请号：US16980084

    申请日：2019-03-12

    Applicant: BASF SE

    Inventor： Frank Prissok ,  Elmar Poeselt ,  Dirk Kempfert ,  Lionel Gehringer ,  Juergen Weiser ,  Matthias Goldbeck

    IPC: C08G18/50 ,  C08F4/80 ,  C08G18/76 ,  C08J11/04

    CPC classification number: C08G18/5045 ,  C08F4/80 ,  C08G18/7671 ,  C08J11/04 ,  C08J2375/04

    Abstract: The present invention relates to a process for producing a thermoplastic polyurethane reacting at least one thermoplastic polyurethane (TPU-1) or a polyurethane mixture comprising a thermoplastic polyurethane (TPU-1) with at least one compound (V1) comprising two hydroxyl groups to obtain a mixture (G-a) comprising a thermoplastic polyurethane (TPU-2) and the reaction of the mixture (G-a) with a mixture (G-b) comprising an isocyanate composition (ZI) comprising at least one diisocyanate and optionally and a polyol composition (ZP) comprising at least one polyol (P2) to obtain a thermoplastic polyurethane (TPU target), wherein the proportion of the employed components (ZI) and (ZP) is matched to the hard segment content of the employed thermoplastic polyurethane (TPU-1), (V1) and the hard segment content of the thermoplastic polyurethane (TPU target). The invention further relates to a thermoplastic polyurethane obtained or obtainable by such a process and to the use thereof for producing extruded, injection molded and pressed articles as well as foams, cable sheathings, hoses, profiles, drive belts, fibers, nonwovens, films, moldings, soles, sporting goods, shoes, plugs, housings, damping elements for the electricals industry, automotive industry, mechanical engineering, 3D printing, medicine and consumer goods.

    PROCESS FOR PREPARING AN OLEFIN OXIDE
    157.
    发明公开
    PROCESS FOR PREPARING AN OLEFIN OXIDE 审中-公开

    公开(公告)号：US20240158361A1

    公开(公告)日：2024-05-16

    申请号：US18280742

    申请日：2022-03-10

    Applicant: BASF SE ,  Dow Global Technologies LLC

    Inventor： Dominic RIEDEL ,  Dylan SEGERS ,  Joaquim Henriqu TELES ,  Philip KAMPE ,  Meinolf WEIDENBACH ,  Franciscus Johannes Robertus VAN NEER ,  Malte SCHULZ

    IPC: C07D301/12 ,  B01J8/06

    CPC classification number: C07D301/12 ,  B01J8/06

    Abstract: The present invention relates to a process for preparing an olefin oxide from a reaction mixture stream in an epoxidation reactor R, wherein R contains z active reaction tubes T(i) arranged in parallel, z≥2, i=1 . . . z, wherein each T(i) comprises a reaction zone Z(i) comprising a heterogeneous epoxidation catalyst, said reaction mixture stream comprising x components C(j), x≥3, j=1 . . . x, the process comprising (i) providing m educt streams E(k), m≥1, k=1 . . . m, wherein each E(k) exhibits a mass flow rate FE(k) and comprises y components C(j), y=1 . . . x, wherein a given component C(j) is contained in at least one E(k); (ii) dividing each E(k) into n educt substreams S(k,i), n≤z, each S(k,i) exhibiting a mass flow rate Fs(k,i), wherein to at least one E(k), the inequality (1) applies: Formulas (1), (2), (3), (iii) providing n reaction mixtures streams M(i) comprising the x components C(j), said providing comprising, for each i, either combining and admixing the n educt substreams S(k,i) obtaining the n reaction mixtures M(i) if m>1, or passing on the n educt substreams S(k,i) as the n reaction mixtures M(i) if m=1; (iv) feeding each M(i) obtained according to (iii) into Z(i) and contacting each M(i) in Z(i) with the epoxidation catalyst under epoxidation reaction conditions; wherein the x components C(j) comprise hydrogen peroxide, an organic solvent, and the olefin. The present invention further relates to an olefin oxide obtained or obtainable from said process.

    COLUMN FOR THERMAL TREATMENT OF A MIXTURE OF COMPOUNDS HAVING A TENDENCY TO POLYMERIZATION
    158.
    发明公开
    COLUMN FOR THERMAL TREATMENT OF A MIXTURE OF COMPOUNDS HAVING A TENDENCY TO POLYMERIZATION 审中-公开

    公开(公告)号：US20240157269A1

    公开(公告)日：2024-05-16

    申请号：US18284313

    申请日：2022-03-17

    Applicant: BASF SE

    Inventor： Ulrich HAMMON ,  Lukas SCHULZ

    IPC: B01D3/32

    CPC classification number: B01D3/328

    Abstract: The present invention relates to a column (1) for a thermal treatment of a mixture of compounds having a tendency to polymerization. The column (1) comprises a mass transfer tray (5) comprising a rising tube (8) having an inlet opening (9) below and an outlet opening (10) above the mass transfer tray (5). The rising tube (8) further comprises a lateral opening (11) above the mass transfer tray close to the upper surface of the mass transfer tray (5). Said rising tube (8) is adapted to form a fountain (13) at the outlet opening (10) by atomization of a liquid fraction of the mixture of compounds from the mass transfer tray that enters through the lateral opening into the rising tube (8). The fountain (13) is sprayed to a spot (16) of the column (1) where polymerization is likely to occur. Furthermore, the present invention relates to a thermal separating process that uses such column (1).

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