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    PROCESS FOR PREPARING A COPOLYMER POLYOL
    1.
    发明申请
    PROCESS FOR PREPARING A COPOLYMER POLYOL 审中-公开

    公开(公告)号：WO2020163154A1

    公开(公告)日：2020-08-13

    申请号：PCT/US2020/015973

    申请日：2020-01-30

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： CLAESSENS, Sven ,  KIRILIN, Alexey ,  GERRIT-JAN, Van Gaalen ,  SREEDHAR, Balamurali ,  ADAMS, An

    IPC: C08G18/08 ,  C08F283/06 ,  C08G18/63 ,  C08G65/32

    Abstract: A process for preparing a copolymer polyol containing a reduced content of residual monomers and volatiles including the steps of: (a) providing at least one copolymer polyol containing a first initial content of residual monomers and volatiles; (b) providing at least one molecular sieve adsorbent; (c) contacting the at least one copolymer polyol with the at least one molecular sieve adsorbent for a period of time and at a temperature sufficient for the at least one molecular sieve adsorbent to adsorb at least a portion of the first initial content of residual monomers and volatiles present in the at least one copolymer polyol to reduce the first initial content of residual monomers and volatiles of the at least one copolymer polyol to form at least one copolymer polyol containing a second reduced content of residual monomers and volatiles; and (d) separating the at least one molecular sieve adsorbent containing a portion of the first initial content residual monomers and volatiles from the at least one copolymer polyol to form at least one copolymer polyol containing a second reduced content of residual monomers and volatiles.

    MONOMER RECOVERY PROCESS
    2.
    发明申请
    MONOMER RECOVERY PROCESS 审中-公开

    公开(公告)号：WO2020163400A1

    公开(公告)日：2020-08-13

    申请号：PCT/US2020/016670

    申请日：2020-02-04

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： HASSAN, Abu Mokhtarul ,  JEWELL, Dennis W. ,  CLAESSENS, Sven

    IPC: C08G18/08 ,  C08F283/06 ,  C08G18/63 ,  C08G65/30

    Abstract: A process for recovering monomers and solvent present in a waste stream including the steps of:(a) providing a waste feed stream containing monomers, solvent and impurities; (b) subjecting the waste feed stream of step (a) to a separation process under conditions for separating the monomers and solvent from the impurities of the waste stream; (c) recovering the monomers and solvent in one or more streams; and (d) passing the one or more of the monomer and solvent streams from step (c) to further processing.

    Storage Stable Polyol Composition for Polyurethane Elastomers
    5.
    发明申请
    Storage Stable Polyol Composition for Polyurethane Elastomers 审中-公开
    聚氨酯弹性体的储存稳定多元醇组合物

    公开(公告)号：WO2015084635A1

    公开(公告)日：2015-06-11

    申请号：PCT/US2014/067304

    申请日：2014-11-25

    Applicant: DOW GLOBAL TECHNOLOGIES LLC

    Inventor： CLAESSENS, Sven ,  VIRGILI, Justin M. ,  DE SMET, Antoon ,  BRAAKSMA, Yme ,  SONNENSCHEIN, Mark F. ,  WENDT, Benjamin L.

    IPC: C08G18/48 ,  C08G18/76 ,  C08G18/79 ,  C08G18/20 ,  C08G18/10 ,  C08G18/12

    CPC classification number: C08G18/4808 ,  C08G18/10 ,  C08G18/12 ,  C08G18/2063 ,  C08G18/4837 ,  C08G18/485 ,  C08G18/4854 ,  C08G18/7657 ,  C08G18/797 ,  C08G18/3206

    Abstract: A polyurethane reaction system includes an isocyanate component having at least one polyisocyanate and an isocyanate-reactive component having a storage stable polyol component that is a single phase liquid mixture at 23°C including a first polyether polyol and a second polyether polyol. The first polyether polyol is included in an amount from 20 wt% to 90 wt%, based on total weight of the polyol component, is a glycol based polyoxypropylene-polyoxyethylene polyether polyol having number average molecular weight from 1500 g/mol to 1975 g/mol, and has a polyoxyethylene content from 26 wt% and 34 wt% based on a total weight of the first polyether polyol. The second polyether polyol is included in an amount from 10 wt% to 80 wt%, based on total weight of the polyol component, has a number average molecular weight from 750 g/mol to 4000 g/mol, and has a melting point higher than 23°C.

    Abstract translation: 聚氨酯反应体系包括具有至少一种多异氰酸酯和异氰酸酯反应性组分的异氰酸酯组分，所述异氰酸酯组分具有储存稳定的多元醇组分，其为包含第一聚醚多元醇和第二聚醚多元醇的23℃下的单相液体混合物。 基于多元醇组分的总重量，第一聚醚多元醇的含量为20重量％至90重量％，是数均分子量为1500g / mol至1975g / mol的二醇基聚氧丙烯 - 聚氧乙烯聚醚多元醇， 并且基于第一聚醚多元醇的总重量具有26重量％和34重量％的聚氧乙烯含量。 基于多元醇组分的总重量，第二聚醚多元醇的含量为10重量％至80重量％，数均分子量为750克/摩尔至4000克/摩尔，熔点较高 超过23°C。

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